WO1998044340A1 - Orientation measuring instrument - Google Patents
Orientation measuring instrument Download PDFInfo
- Publication number
- WO1998044340A1 WO1998044340A1 PCT/JP1998/001356 JP9801356W WO9844340A1 WO 1998044340 A1 WO1998044340 A1 WO 1998044340A1 JP 9801356 W JP9801356 W JP 9801356W WO 9844340 A1 WO9844340 A1 WO 9844340A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample
- dielectric resonator
- dielectric
- resonator
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Definitions
- the present invention uses a microwave to measure the directivity of a sheet, such as a polymer sheet containing a film or paper, or a three-dimensional article such as a molded article such as plastic, resin, or rubber.
- a sheet such as a polymer sheet containing a film or paper, or a three-dimensional article such as a molded article such as plastic, resin, or rubber.
- the present invention relates to an apparatus for performing the above. Background art
- the fiber orientation of paper corresponds to the chain direction of the molecules that make up the fiber, curling, twisting,
- NIP Non-Imp ac t Pr in t er
- the molecular chain In a solid polymer, the molecular chain generally has orientation due to its shape in the process of solidification from a fluidized state. Anisotropy develops in mechanical, thermal, optical or electromagnetic properties due to the orientation. As a result, for example, anisotropy in elastic modulus and anisotropy in heat shrinkage occur, causing various quality problems. are doing.
- Methods for measuring such anisotropy include X-ray diffraction, infrared polarization, fluorescence polarization, birefringence, ultrasound, and microwave.
- the birefringence method is a method of optically measuring anisotropy using the refraction phenomenon based on the anisotropy of the refractive index, and the measurement requires transparency to visible light or near-infrared light. Therefore, opaque samples cannot be measured.
- the ultrasonic method is not suitable for a moving sample because it is a contact type.
- the method using the resonance of the microphone mouth wave utilizes the anisotropy of the dielectric constant.
- the dielectric constant has a certain relationship with the refractive index.
- Microwave-based methods including paper and polymer films, are used for molecular orientation measurements with or without optical transparency.
- Fig. 1 illustrates the principle of a conventional orientation meter using a microphone mouth-wave cavity resonator.
- a microwave introduction unit 2 is provided at one end and a microwave detection unit 4 is provided at the other end.
- a microwave resonator 6 composed of a waveguide having a fixed electric field vibration direction between both ends is provided.
- the resonator 6 is provided with a slit 8 in the direction perpendicular to the axis of the resonator 6 at the position of the antinode of the standing wave.
- the sample 10 is placed in the slit 8, a microwave is introduced from the microwave introduction unit 2, and the microwave intensity is detected by the microwave detection unit 4.
- the sample 10 is rotated around the axis of the resonator 6, and the transmitted microwave intensity at each rotation angle is detected to obtain an orientation pattern.
- the dielectric constant at each rotation angle position is obtained from the amount of deviation between the resonance frequency when the sample 10 is placed on the slit 8 and the resonance frequency when the sample is not placed, and the dielectric constant pattern is obtained. You can also get
- FIG. 2 As a method of measuring the dielectric constant using microwaves, the method shown in FIG. 2 has been proposed (see Japanese Utility Model Application Laid-Open No. 3-730368).
- sample 10 A pair of dielectric resonators 12a and 12b opposed to each other are provided.
- a pair of terminals 14a and 14b are provided to face each other across the dielectric resonator 12a.
- the terminals 14a and 14b generate an electric field vector in the dielectric resonators 12a and 12b in one direction parallel to the surface of the sample 10, and the resonance characteristics Measure the dielectric constant.
- the terminals 14a and 14b are in a loop shape. It is also possible to measure the dielectric anisotropy of the sample by providing multiple pairs of terminals 14a and 14b and switching the operation.
- the shape of the sample 10 to be measured is Is limited to a sheet-like material.
- a first object of the present invention is to make it possible to measure the dielectric anisotropy not only of a sheet-shaped sample but also of a sample such as a three-dimensional molded product. It is desirable that the electric field vector on the inner surface of the sample required for measuring the dielectric anisotropy be more uniform.
- the terminals 14a and 14b have a loop shape, but the second object of the present invention is to further improve the uniformity of the electric field vector than the loop-shaped terminal.
- the goal is to find a achievable terminal shape and increase the sensitivity of the dielectric anisotropy measurement. Disclosure of the invention
- One aspect of the present invention relates to a dielectric resonator having a plane approaching or in contact with a sample; and a frequency near a resonance frequency of the dielectric resonator when the sample is present, and in a sample parallel to the plane.
- a microwave excitation device for generating an electric field vector having a unidirectional component in a plane in the dielectric resonator, a detection device for detecting transmission energy or reflection energy by the dielectric resonator, and a sample or dielectric resonance.
- vessel A rotation mechanism for rotating the sample in a plane parallel to the plane, and a data processing device for obtaining the dielectric anisotropy of the sample from a change in the detection output of the detection device accompanying the rotation by the rotation mechanism.
- This aspect is suitable for determining the dielectric anisotropy of a specific part of a sample.
- a plurality of dielectric resonators including a plane which comes close to or in contact with a sample, and is arranged close to each other; and a frequency near a resonance frequency of the dielectric resonator when the sample is present.
- a microwave excitation device for generating an electric field vector having a unidirectional component in a plane inside the sample parallel to the above-mentioned plane and having electric fields having directions different from each other in each dielectric resonator;
- a data processing device for determining the dielectric anisotropy of the sample from the data.
- the sample and the dielectric resonator do not need to rotate, and the dielectric anisotropy of the sample can be obtained from the outputs from the plurality of dielectric resonators. Suitable for measuring.
- Still another aspect of the present invention relates to a dielectric resonator having a plane approaching or contacting a sample, a frequency near a resonance frequency of the dielectric resonator when the sample is present, and being parallel to the plane.
- a set of a microphone mouth wave excitation device that generates an electric field vector having a unidirectional component in the plane inside the sample in the dielectric resonator, and a detection device that detects transmitted energy or reflected energy by the dielectric resonator
- a plurality of sets arranged at mutually different positions with respect to the dielectric resonator; a switching drive device for selecting and sequentially operating one of a plurality of sets of the microwave excitation device and the detection device; and the switching thereof.
- a data processing device for determining the dielectric anisotropy of the sample from a change in the detection output of the detection device accompanying the switching by the driving device.
- the dielectric anisotropy of the sample can be determined by switching the operation of the pair of the excitation device and the detection device for the remic mouth wave by the device. Suitable for measuring.
- a change in the detection output by the detection device can be measured as a change in the resonance frequency.
- the change in the resonance frequency can be measured as the frequency shift itself.
- a change in the detection output by the detection device can also be detected as a change in the detection energy at a specific frequency.
- the terminals of the microwave excitation device and the detection device can be in the form of a loop, or they can be in the form of a pin.
- a loop coupling by a magnetic field is required, and in the case of a rod, coupling by an electric field.
- the electric field distribution at the sample position is determined by the resonance mode determined by the shape, size, excitation method, dielectric constant, etc. of the dielectric resonator. It is desirable to select a resonance mode that creates a field.
- the magnetic field distribution or the electric field distribution in the resonance mode in which resonance is to be performed and the magnetic field or the electric field generated by the loop-shaped or open-shaped terminals have a vectorwise direction. It is desirable to arrange it near or inside the dielectric resonator.
- a rod-shaped terminal can be arranged in a direction perpendicular or parallel to the surface of the dielectric resonator approaching or in contact with the sample.
- the excitation device and the detection device are connected to a pair of loop-shaped or open-shaped terminals, respectively, which are arranged to face each other across the dielectric resonator.
- the exciting device and the detecting device are connected to one common loop-shaped or open-shaped terminal arranged close to the dielectric resonator.
- the dielectric resonator is a columnar resonator or a square resonator.
- the periphery of the dielectric resonator is preferably covered with a shielding material made of a conductive material except for the sample measurement surface.
- a shielding material made of a conductive material is also placed on the sample measurement surface side of the dielectric resonator, and the sample is placed between the sample measurement surface of the dielectric resonator and the shield material on the sample measurement surface side. It is preferred that
- FIG. 3 (A) schematically shows one embodiment.
- appropriate microwave loop antennas (or rod antennas) 22a and 22b are arranged at appropriate positions and appropriate directions with respect to the dielectric resonator 20.
- the antennas 22a and 22b can resonate the dielectric resonator 20 and create a resonance mode in which an electric field vector seeping out of the dielectric resonator 20 exists.
- the resonance modes include a TM mode and a TE mode when the dielectric resonator 20 is rectangular, and an HEM mode when the dielectric resonator 20 is cylindrical.
- the strength of the electric field vector 24 decreases almost exponentially as the distance from the dielectric resonator 20 increases, but when the distance is a little distance from the dielectric resonator 20 or when the dielectric resonator 20 contacts the dielectric resonator 20.
- the resonance frequency shifts according to the dielectric constant of the sample due to electromagnetic coupling.
- FIG. 3 (A) schematically shows a configuration in the case of using a cylindrical dielectric resonator as the dielectric resonator 20 and operating in the HEM u ⁇ mode.
- the microwave emitted from the oscillator 26 is looped.
- a magnetic field is generated by the antenna 22a, and the dielectric resonator 20 resonates by electromagnetic coupling.
- the resonance frequency in this case is determined by the dimensions and the dielectric constant of the dielectric resonator 20. If the radius of the cylinder of the dielectric resonator 20 is a, the length is L, and the permittivity is ⁇ , the resonance frequency f (GH z) is approximately
- Fig. 3 ( ⁇ ) shows Fig. 3 ( ⁇ ) as an equivalent circuit.
- the resonance frequency shifts by changing the capacitance Cr according to the dielectric constant of the sample 25 with respect to the resonance frequency when not placed. If the dielectric constant of sample 25 is anisotropic, the resonance frequency also shifts depending on the directions of sample 25 and electric field vector 24.
- Fig. 4 shows the electric field distribution in the EMuS mode.
- A shows the electric field distribution on the horizontal plane near the end of the dielectric resonator 20, and
- the microwave emitted from the oscillator 26 is magnetically coupled to the dielectric resonator 20 by the loop antenna 22a, and the dielectric resonator 20 can be brought into a resonance state.
- the electric field vector of the dielectric resonator 20 appears almost parallel to the surface of the sample 25, and interacts with the dipole moment of the sample 25.
- the microwave intensity appearing at the detector 28 is changed to the rotation angle.
- the orientation state can be obtained from the angle dependence of the intensity.
- the controller 30 controls the frequency of the microwave generated from the oscillator 26 and takes in the microwave intensity from the detector 28.
- Reference numeral 32 denotes a computer as a data processing device for obtaining the orientation state from the angle dependence of the detected microwave intensity.
- the dielectric resonator 20 there is a relationship between the transmitted microwave intensity and the frequency as shown in FIG. 5 (A). This resonance curve is called the Q curve.
- the Q curve changes according to the following relationship depending on the position of the sample 25.
- Figure 5 ( ⁇ ) shows the change.
- the peak frequency (resonance frequency) of the Q curve changes for each relative rotation angle position (S) of the sample 25 with respect to the dielectric resonator 20.
- S relative rotation angle position
- I the transmission microphone mouth wave detection intensity at the peak frequency
- the transmitted microwave detection intensity at each rotation angle at the frequency f is shown as a cross section in FIG. 6 (B).
- the present invention includes a dielectric resonator having a plane that approaches or contacts a sample, and has a frequency near a resonance frequency of the dielectric resonator when a sample is present, and a flat surface thereof. While generating an electric field vector having a one-way component on the inner plane of the sample parallel to the plane, the dielectric resonator vibrates while rotating the sample or the dielectric resonator in that plane. Change.
- a plurality of dielectric resonators having a plane which is close to or in contact with the sample and arranged close to each other, at a frequency near the resonance frequency of the dielectric resonator when the sample is present, and on the plane
- An electric field vector having a unidirectional component in the sample inner plane parallel to generates electric field vectors having different directions in each dielectric resonator.
- the change in the detected value of the resonance energy due to the rotation of the sample or the dielectric resonator or the change in the electric field vector, or the detected value of the resonance energy from a plurality of dielectric resonators with different directions of the electric field vector. Determine the dielectric anisotropy of the sample. This makes it possible to measure the dielectric anisotropy not only of a sample having a sheet shape but also of a sample such as a three-dimensional molded product.
- the moving sample is measured continuously by rotating the dielectric resonator, changing the direction of the electric field vector, or arranging multiple dielectric resonators with different directions of the electric field vector. It can be applied to online measurement at production sites.
- FIG. 1 is a schematic perspective view showing a conventional orientation measuring device using a microphone mouth-wave cavity resonator.
- FIG. 2 is a cross-sectional view showing a conventional orientation measuring device using a dielectric resonator.
- FIG. 3 (A) is a schematic perspective view of an embodiment for explaining the principle of the present invention, and FIG. 3 (B) is an equivalent circuit diagram thereof.
- Fig. 5 ( ⁇ ) is a Q-curve diagram showing the relationship between transmitted microwave intensity and frequency in a dielectric resonator, and Fig. 5 ( ⁇ ) is a diagram showing the resonance frequency shift accompanying a change in dielectric constant. It is.
- Fig. 6 ( ⁇ ) shows the change of the Q curve when the sample or the dielectric resonator is rotated, and Fig. 6 ( ⁇ ) shows the cross section at a specific frequency.
- FIG. 10 is a diagram showing the resonance peak near 5070.2 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ in the same example.
- ( ⁇ ) shows the blank measurement without the sample, and ( ⁇ ) shows the paper as the sample. Is the case.
- FIG. 10 is a diagram showing the resonance peak near 5070.2 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ in the same example.
- FIG. 11 ( ⁇ ) is a perspective view showing an embodiment for measuring the reflection energy by the dielectric resonator
- FIG. 11 ( ⁇ ) is a front view showing the dielectric resonator and the rod antenna there.
- FIG. 12 ( ⁇ ) is a diagram showing a reflected energy spectrum at the time of blank measurement in the embodiment of FIG. 11, and
- FIG. 12 ( ⁇ ) is a diagram showing a peak indicated by the arrow.
- FIG. 13 is a graph showing the peak around 457.8755 MHz in the embodiment of FIG. 11, wherein ( ⁇ ) shows a blank measurement, and ( ⁇ ) shows a paper as a sample. This is the case when FIG. 14 is a front sectional view showing an embodiment in which the dielectric resonator is rotated.
- FIG. 15 is a schematic perspective view showing an embodiment having a plurality of dielectric resonators installed so that the directions of generated electric field vectors are different.
- Fig. 16 is a schematic perspective view showing an embodiment having a plurality of dielectric
- FIG. 17 ( ⁇ ) shows an embodiment in which a rectangular resonator and a loop antenna are combined.
- FIG. 1B is a schematic perspective view, and FIG. 1B is a schematic perspective view showing an embodiment in which a rectangular resonator and a rod antenna are combined.
- 18 '(A) to 18 (D) are diagrams showing electric field distributions when a loop antenna or a quad antenna is used with a cavity resonator and a dielectric resonator, respectively.
- Fig. 17 shows an embodiment in which a rectangular resonator and a loop antenna are combined.
- FIG. 1B is a schematic perspective view
- FIG. 1B is a schematic perspective view showing an embodiment in which a rectangular resonator and a rod antenna are combined.
- 18 '(A) to 18 (D) are diagrams showing electric field distributions when a loop antenna or a quad antenna is used with a cavity resonator and a dielectric resonator, respectively.
- FIG. 19 (A) is a schematic perspective view showing a measuring device combining a rectangular resonator with a loop antenna, and Figs. (B) and (C) show the measurement conditions with the sample direction being different by 90 degrees.
- the plan view, (D) shows the change of the resonance spectrum depending on the direction of the sample.
- FIG. 20 (A) is a schematic perspective view showing a measuring device in which a rod antenna is combined with a rectangular resonator
- FIG. 20 (B) is a diagram showing a change in the resonance spectrum depending on the direction of the sample.
- FIG. 21 (A) is a schematic perspective view showing an embodiment having a shield member
- FIG. 21 (B) is a schematic perspective view showing an electric field vector of the dielectric resonator of this embodiment.
- FIG. 22 is a diagram showing a resonance spectrum obtained by measuring a PET sample according to the embodiment of FIG. 21.
- FIG. 23 is a diagram showing a change in resonance frequency when the sample is rotated in a plane in the embodiment of FIG. 21.
- FIG. 24 is a schematic configuration diagram showing another embodiment for measuring the dielectric anisotropy of a sample without rotating the dielectric resonator and the sample.
- FIG. 25 is a block diagram schematically showing a computer as a data processing device. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 8 shows the first embodiment.
- a cylindrical molded case made of polyethylene is placed in a cylindrical shield case 35 made of brass with an open top as a low dielectric constant support 38 in a cylindrical support case 35, and a cylindrical dielectric resonator 20 is placed on the bottom of the support 38. Is mounted horizontally.
- the top surface of the dielectric resonator 20 is set to be substantially equal to the height of the opening edge of the shield case 35, and the sample is placed in the opening of the shield case 35.
- the distribution of the dielectric constant of the sample is determined by rotating the sample in a horizontal plane at its opening or by rotating the dielectric resonator 20 in a horizontal plane. Direction can be measured.
- a pair of loop antennas 22 a and 22 b are arranged on both sides of the dielectric resonator 20, and their loops are fixed vertically.
- the loop antennas 22a and 22b are connected to the respective connectors 34a and 34b via semi-rigid cables 36a and 36b, and the oscillator and detector are connected from connectors 34a and 34b. Connected to each other.
- Fig. 9 shows an example of measuring the resonance characteristics with this measuring device without placing a sample.
- the horizontal axis represents microwave frequency, and the vertical axis represents transmitted energy.
- (A) shows the transmitted energy spectrum when the mouth opening frequency is scanned from 100 OMHz to 600 OMHz, and the part indicated by the arrow in (A) is enlarged.
- FIG. 10 (A) shows a resonance peak at a microwave frequency of 5070.2 MHz when no sample is placed (at the time of blank measurement) in the same example.
- FIG. 10 (B) shows the resonance characteristics when paper is placed in the opening of the shield case 35 as a sample. It can be seen that the peak position is shifted to the lower frequency side by placing the sample. If the measurement is performed with the transmission frequency fixed at the position indicated by the arrow, the output will drop when the sample is placed. Then, by rotating the sample or the dielectric resonator 20 in a plane parallel to the plane of the dielectric resonator 20, if the sample has anisotropy, as shown in FIGS. 5 to 7, The orientation can be measured.
- FIG. 11 (A) shows an embodiment in which the reflected energy by the dielectric resonator 20 is measured.
- FIG. 11 (B) the lower surface side of the dielectric resonator 20 is measured.
- a rod antenna 40 is arranged. The rod antenna 40 supplies the microwave from the oscillator to the dielectric resonator 20 and detects the energy reflected by the dielectric resonator 20.
- FIG. 12 shows the measurement result of the reflected energy in the embodiment of FIG. 11, and is an example of blank measurement when no sample is placed.
- (A) shows the reflection energy spectrum when the microphone mouth wave frequency is scanned from 100 OMHz to 600 OMHz, and the part indicated by the arrow in (A) is enlarged. But
- FIG. 13 (A) shows a peak having a minimum point at 457.875.75 MHz in the blank measurement in the embodiment of FIG.
- the minimum position of the peak shifts to the lower frequency side as shown in (B).
- the output is reduced by placing the sample.
- FIG. 7 by rotating the sample or the dielectric resonator 20 in a plane parallel to the plane of the dielectric resonator 20, if the sample has an anisotropy of the dielectric constant, FIG. From FIG. 7, the orientation can be measured as shown in FIG. FIG.
- the 14 shows a specific example in which the dielectric resonator 20 is rotated.
- the dielectric resonator 20 and the shield case 35 are attached to the rotary joint 42 so as to be rotated by a motor 46.
- the connectors 34a and 34b are connected to a joint oscillator and a detector via a rotary joint 42, respectively.
- the sample 48 is arranged close to the shield case 35 and the upper surface of the dielectric resonator 20.
- the transmitted energy in each direction in the plane of the sample 48 is measured, and the dielectric orientation of the sample 48 is determined from the anisotropy. Desired.
- Samples 48 may be placed sequentially or move continuously It may be. If the sample 48 is moved continuously, online measurement becomes possible.
- FIG. 15 schematically shows another embodiment for obtaining the anisotropy, in which the dielectric resonator 20 and the sample 48 are not rotated but the dielectric resonator 20 and the sample 48 are rotated.
- a plurality of dielectric resonators 20a, 20b, and 20c arranged so that the directions of the generated electric field vectors are different are arranged in one plane, and a sample 4 is placed on the dielectric resonators. 8 moves.
- the three dielectric resonators 20a, 20b, and 20c detect microwave transmission energy in directions different from each other by 120 °, and the dielectric Orientation is required.
- the dielectric orientation of the sample can be quickly obtained.
- the dielectric resonators 20a, 20b, and 20c are arranged in a line along the traveling direction of the sample 48 (the direction of the arrow) as shown in FIG. By synchronizing the timing of detection of 0a, 20b, and 20c with the moving speed of the sample 48, the same location can be measured.
- the dielectric resonators 20a, 20b, and 20c are arranged in a direction perpendicular to the traveling direction of the sample 48, different parts will be measured, but they will be arranged close to each other. By doing so, problems due to different measurement locations can be suppressed.
- the dielectric resonator is rotated as shown in FIG. 14, and a plurality of dielectric resonators are formed as shown in FIG.
- the electric field vectors can be arranged in different directions.
- a linear rod-shaped rod antenna is used as the terminal of the microphone mouth wave excitation device and the detection device rather than a loop antenna. Electric field vector in a moving sample plane It was found that the uniformity in the direction of the torque was excellent. This will be described with reference to FIGS. 16 to 20.
- Fig. 16 shows the electrolytic distribution and resonance frequency when a rod antenna is applied to a rectangular resonator.
- a rectangular resonator 54 whose sample measurement surface is rectangular is sandwiched, and a rod antenna 56a of the excitation device is arranged on one side, and a rod antenna 56b of the detection device is arranged on the other side. I do.
- the bottom surface of the square resonator 54 is disposed in contact with the conductive shielding material 58.
- a and b are the lengths of the short and long sides of the sample measurement surface of the rectangular resonator 54, and 1 is the height.
- the electric field vector diagram in each resonance mode for each dimension a, b, 1 and the rectangular resonator 54, and the calculated and measured values of the resonance frequency are shown in the table of Fig. 16 (B).
- the unit of the resonance frequency is GHz. In the mode with the measured value, the calculated value of the resonance frequency and the measured value almost match, indicating that the resonance mode shown is appropriate.
- FIG. 17 (A) shows the case where the loop antennas 60a and 60B are used
- FIG. 17 (B) shows the case where the rod antennas 56a and 56b are used.
- the direction indicated by the dashed line in the plane on which the sample 48 is arranged is defined as 0 degree.
- Fig. 18 shows the results of a comparison of the electric field distribution when a loop antenna or rod antenna is used with a cavity resonator and a dielectric resonator.
- the direction of the dashed line is set to 0 degrees, and a strip of paper (50 mm X 1.5 mm) impregnated with a radio wave absorber is used.
- the sample was placed on the sample measurement surface while changing the angle every 30 degrees, and the resonance peak level was measured.
- the elongated paper impregnated with the radio wave absorber was placed in the gap where the sample was placed, changing the angle every 30 degrees.
- the terminals of the microwave excitation device and the detection device are rod antennas, but the antennas are arranged vertically.
- the horizontal direction was set to 0 degree.
- (B) shows the case where a circular dielectric resonator and a loop antenna are combined, and there is an electric field vector other than the one-way component.
- Panel (C) shows a case in which a rectangular dielectric resonator and a loop antenna are combined.
- the electric field vector is oriented in each direction, indicating that the uniformity is poor.
- (D) shows the case in which a rectangular dielectric resonator and a rod antenna are combined, and there is an electric field vector other than the one-way component, but the electric field is more uniform than in the case of (B) using the loop antenna It indicates that it has a vector.
- FIG. 19 and FIG. 20 show the results of measuring a sample using such a dielectric resonator.
- this is a measuring device that combines a rectangular dielectric resonator 54 with loop antennas 60a and 60b.
- the resonance characteristics were measured with a difference of 90 degrees.
- Fig. 19 (D) although a frequency shift was observed, the shift amount was as small as about 0.6 MHz.
- Fig. 20 shows a combination of a rectangular dielectric resonator 54 and rod antennas 56a, 56b as shown in (A). Were measured 90 degrees differently. The results, as shown in Fig. 20 (B), show that the resonance frequency shift is large, reaching up to 1.7 MHz, indicating that more sensitive measurement can be performed.
- FIG. 21 shows an embodiment having a shield member.
- a circular dielectric resonator 62 is accommodated in a shield case 64 made of a cylindrical container made of brass, and the bottom surface of the dielectric resonator 62 contacts the shield case 64 to form a dielectric resonator 62.
- the upper surface and the opening of the shield case 64 are formed at the same height.
- a rod antenna 56a of the excitation device and a rod antenna 56b of the detection device are arranged at positions facing each other with the dielectric resonator 62 therebetween.
- the sample 48 is arranged so as to approach the upper surface of the dielectric resonator 62.
- a brass shield member 66 is disposed on the surface of the sample 48 opposite to the dielectric resonator 62.
- FIG. 21 (B) shows the electric field vector of the dielectric resonator 62 of this embodiment, and the mode is ⁇ 11 ⁇ +1 .
- the electric field contains a unidirectional component on the sample measurement surface.
- Fig. 22 shows the measurement of a biaxially oriented PET (polyethylene terephthalate) sheet-shaped sample with a thickness of 192 using the dielectric resonator of this example (with a shield member 66). This shows the resonance spectrum obtained.
- FIG. 23 shows the change in the resonance frequency when the sample is rotated in the plane with respect to the peak indicated by the arrow in the resonance spectrum.
- Fig. 23 shows the frequency change from the resonance frequency during blank measurement with no sample placed as a function of the rotation angle.
- the coordinates in the radial direction are 6.5 MHz at the center and 7. OMHz at the outer periphery. From this result, it can be clearly read that the PET sheet has in-plane dielectric anisotropy.
- Figure 24 shows the dielectric anisotropy of the sample without rotating both the dielectric resonator and the sample.
- 9 shows another embodiment for measuring.
- Three pairs of rod antennas are arranged around the circular dielectric resonator 62.
- 56a-1, 56a-2, and 56a-3 are rod antennas of the excitation device, and
- 56b-1, 56b-2, and 56b-3 are open antennas of the detection device.
- Open antennas 56a-1 and 56b-1 are arranged in pairs to sandwich resonator 62
- 56a-2 and 56b-2 are arranged in pairs to sandwich resonator 62.
- 56a-3 and 56b-3 are paired resonators
- the direction of the electric field vector generated by the rod antenna 56a-1 and the direction of the electric field vector generated by the open antenna 56a-2 are 60 degrees, and the direction of the electric field vector generated by the rod antenna 56a-2 is 60 degrees.
- Each rod antenna is arranged so that the direction and the direction of the electric field vector generated by the rod antenna 56a-3 are further 60 degrees.
- Reference numeral 70 denotes an oscillator of the excitation device. The oscillator 70 and the rod antenna 56a :! The connection with ⁇ 56a-3 is sequentially switched by the distributor 65.
- 72 is a detector, and detector 7
- the connection between 2 and the rod antennas 56 b-1 to 56 b-3 is sequentially switched by the distributor 67.
- the distributors 65 and 67 are controlled by a switching driver 68 so as to synchronize each pair of rod antennas with the oscillator 70 and the detector 72, respectively.
- the operating rod antenna pair is switched by the switching driving device 68 to change the three directions by 60 degrees.
- the resonance spectrum can be measured, and the dielectric anisotropy in the sample plane can be measured without rotating the sample or the resonator 62.
- the sample measurement surface of the resonator 62 is circular, but when a rod antenna is used as the oscillator and detector terminals, the sample measurement surface is circular. Improves the uniformity of the electric field vector. Therefore, in Fig. 24 In the embodiment, the shape of the sample measurement surface of the resonator 62 can be a regular hexagon.
- Fig. 25 schematically shows a computer as a data processing device for processing the output signal of the detected microphone mouth wave which has been converted into a re-digital signal by the AZD converter. is there. 8 (H3 ⁇ 4CPU, 81 is a control unit, 82 is a data storage memory, 83 is a CRT, a display device such as a liquid crystal panel, 84 is a printer, 85 is a keyboard and other input devices.
- the control program storage unit 811 includes a program for controlling the operation of the entire apparatus, a program for supplying microphone mouth wave power, and the like.
- the sample control program storage section 8 12 controls, for example, the operation of rotating the sample or the dielectric resonator in the embodiment of FIG. 14 or switches the pair of operated pad antennas in the embodiment of FIG. Stores programs that control operations.
- the sampling program storage section 8 13 stores a sampling program for the detection data, and the sampling program controls the timing of the sampling of the detection data and the timing of the A / D conversion by the AZD converter 13 8.
- the data processing program stored in the data processing program storage section 8 14 is sampled, and the measurement data (transmitted or reflected microwave intensity detection data and the corresponding measured microwave frequency) are introduced to this data processing device. , Usage number, rotation angle of the sample, etc.), control of arithmetic processing and other processing to form an orientation pattern from the measured data, and to calculate and derive the orientation direction and degree of orientation.
- the output program stored in the output program storage section 815 controls an operation of selecting an orientation pattern, an orientation direction, an orientation degree, and the like at any time and outputting to the display device 83 or the printer 84.
- the data storage memory 82 is an input buffer memory area 821 for temporarily storing the measurement data introduced into this data processing device, and processing for calculating the orientation, orientation degree, orientation pattern, etc. from these data. Processing data to store data It has an area 822, a storage area 823 for basic data for data processing, an output buffer memory area 824 that stores data to be displayed or printed as needed, and updates it.
- a rotary encoder 53 is provided to detect the rotation angle of the sample or the dielectric resonator.
- 52 is a frequency counter, which is provided in, for example, a microwave oscillator.
- the rotation angle signal of the sample by the rotary encoder 53 and the measurement frequency signal by the frequency counter 52 are introduced into this data processing device in correspondence with the sample transmission or reflection microphone mouth wave intensity detection data by the AZD converter.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98911025A EP0973025B1 (en) | 1997-03-28 | 1998-03-25 | Orientation measuring instrument |
| US09/380,583 US6396288B1 (en) | 1997-03-28 | 1998-03-25 | Orientation measuring instrument |
| CA002284900A CA2284900C (en) | 1997-03-28 | 1998-03-25 | Orientation measuring instrument |
| US10/740,393 USRE40488E1 (en) | 1997-03-28 | 1998-03-25 | Orientation measuring instrument |
| DE69835146T DE69835146T2 (de) | 1997-03-28 | 1998-03-25 | Vorrichtung zur messung der orientierung |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/95135 | 1997-03-28 | ||
| JP9513597 | 1997-03-28 | ||
| JP9/260984 | 1997-09-08 | ||
| JP26098497A JP3731314B2 (ja) | 1997-03-28 | 1997-09-08 | 配向測定装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998044340A1 true WO1998044340A1 (en) | 1998-10-08 |
Family
ID=26436420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/001356 Ceased WO1998044340A1 (en) | 1997-03-28 | 1998-03-25 | Orientation measuring instrument |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | USRE40488E1 (ja) |
| EP (1) | EP0973025B1 (ja) |
| JP (1) | JP3731314B2 (ja) |
| CA (1) | CA2284900C (ja) |
| DE (1) | DE69835146T2 (ja) |
| WO (1) | WO1998044340A1 (ja) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1116951A4 (en) | 1998-09-25 | 2003-05-14 | Oji Paper Co | METHOD AND DEVICE FOR MEASURING THE DIELECTRICITY CONSTANT |
| US20020050828A1 (en) * | 2000-04-14 | 2002-05-02 | General Dielectric, Inc. | Multi-feed microwave reflective resonant sensors |
| DE10112499B4 (de) * | 2001-03-15 | 2010-08-19 | Hauni Maschinenbau Ag | Resonatoreinrichtung, insbesondere Mikrowellenresonatoreinrichtung |
| US6989675B2 (en) * | 2003-03-13 | 2006-01-24 | Multimetrixs Llc | Method and apparatus for precision measurement of film thickness |
| JP4581820B2 (ja) * | 2005-04-28 | 2010-11-17 | 王子製紙株式会社 | 配向測定装置および配向測定方法 |
| JP2006349425A (ja) * | 2005-06-14 | 2006-12-28 | Oji Paper Co Ltd | 坪量測定方法及び装置 |
| JP4711988B2 (ja) * | 2007-03-15 | 2011-06-29 | 富士通株式会社 | 超伝導ディスク共振器、その作製方法、および誘電率異方性の評価方法 |
| US8410792B2 (en) * | 2009-03-02 | 2013-04-02 | Forschungszentrum Juelich Gmbh | Resonator arrangement and method for analyzing a sample using the resonator arrangement |
| JP6301739B2 (ja) * | 2014-06-02 | 2018-03-28 | 京セラ株式会社 | 誘電特性測定方法 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163645A (ja) * | 1987-12-21 | 1989-06-27 | Kanzaki Paper Mfg Co Ltd | シート状材料の高周波特性測定装置 |
| JPH01270648A (ja) * | 1988-04-22 | 1989-10-27 | Kanzaki Paper Mfg Co Ltd | 材料の電気的特性測定装置 |
| JPH0229982B2 (ja) * | 1984-10-01 | 1990-07-03 | Kanzaki Paper Mfg Co Ltd | |
| JPH0339632B2 (ja) * | 1984-09-22 | 1991-06-14 | Kanzaki Paper Mfg Co Ltd | |
| JPH0370368U (ja) * | 1989-11-08 | 1991-07-15 | ||
| JPH049467B2 (ja) * | 1985-03-07 | 1992-02-20 | ||
| JPH0714870Y2 (ja) * | 1986-02-18 | 1995-04-10 | 新王子製紙株式会社 | シート状物の高周波特性測定装置 |
| JPH07225200A (ja) * | 1993-12-08 | 1995-08-22 | Nu Tech Gmbh | 物質の複素誘電率の測定方法および装置 |
| JPH07270342A (ja) * | 1994-02-08 | 1995-10-20 | New Oji Paper Co Ltd | 分子配向測定方法及び装置 |
| JPH08122375A (ja) * | 1994-10-26 | 1996-05-17 | Mitsubishi Heavy Ind Ltd | 液体の誘電特性測定装置 |
| JPH08271449A (ja) * | 1995-03-29 | 1996-10-18 | New Oji Paper Co Ltd | 分子配向測定装置および分子配向測定法 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500385A (en) * | 1984-04-06 | 1985-02-19 | Waggoner Dennis H | Lumber assembly machine |
| US4841223A (en) * | 1987-06-17 | 1989-06-20 | The Institute Of Paper Chemistry | Method and apparatus for measuring fiber orientation anisotropy |
| EP0320442B1 (de) * | 1987-11-27 | 1992-04-15 | Karl-Heinz Schmall | Verwendung eines dielektrischen Mikrowellen-Resonators und Sensorschaltung |
| JPH0229982A (ja) | 1988-07-18 | 1990-01-31 | Taiyo Yuden Co Ltd | 磁気テープ脱落防止法および防止用カバー |
| US4904928A (en) | 1988-12-09 | 1990-02-27 | E. I. Du Pont De Nemours And Company | Measurement apparatus and method utilizing multiple resonant modes of microwave energy |
| JPH0339632A (ja) | 1989-07-06 | 1991-02-20 | Hitachi Ltd | シヤシダイナモメータの制御装置 |
| US5119034A (en) * | 1989-07-12 | 1992-06-02 | Murata Manufacturing Co., Ltd. | Method of measuring dielectric material constants and measuring device employed therefor |
| JP2501910B2 (ja) | 1989-08-10 | 1996-05-29 | シャープ株式会社 | ファクシミリ信号伝送方式 |
| JP2796752B2 (ja) | 1990-04-27 | 1998-09-10 | 日本軽金属株式会社 | 耐食皮膜用Al―Ni―Si合金製スパッタリングターゲット |
| FR2685490B1 (fr) * | 1991-12-19 | 1996-05-15 | Commissariat Energie Atomique | Dispositif de mesure de parametres dielectriques et magnetiques de materiaux et systeme de mesure desdits parametres utilisant ce dispositif. |
| DE4204369C2 (de) * | 1992-02-14 | 1994-08-25 | Forschungszentrum Juelich Gmbh | Verfahren zur Qualitätsbestimmung eines einzelnen supraleitenden Filmes und Vorrichtung zur Durchführung dieses Verfahrens |
| KR100273994B1 (ko) * | 1992-08-21 | 2000-12-15 | 미리암 디. 메코나헤이 | 고온 초전도성 박막 특성을 가진 장치 |
| US5334941A (en) * | 1992-09-14 | 1994-08-02 | Kdc Technology Corp. | Microwave reflection resonator sensors |
| JPH0714870A (ja) | 1993-06-23 | 1995-01-17 | Fujitsu Miyagi Electron:Kk | 半導体装置の製造方法とその製造装置 |
| US5532604A (en) * | 1993-08-31 | 1996-07-02 | New Oji Paper Co. Ltd. | Dielectric constant measuring method and apparatus |
| JPH07120515A (ja) | 1993-08-31 | 1995-05-12 | New Oji Paper Co Ltd | 誘電率測定装置 |
| JPH07103917A (ja) * | 1993-09-30 | 1995-04-21 | New Oji Paper Co Ltd | 材料の異方性測定方法 |
| JP2704704B2 (ja) * | 1994-04-06 | 1998-01-26 | 日本製紙株式会社 | 紙の表面の繊維配向性測定方法 |
| GB2294326A (en) | 1994-10-06 | 1996-04-24 | Scapa Group Plc | Moisture detection meter |
| US5898586A (en) | 1994-11-04 | 1999-04-27 | Eli Lilly And Company | Method for administering clinical trail material |
| FI953114A0 (fi) * | 1995-06-21 | 1995-06-21 | Valtion Teknillinen | Maetningsfoerfarande baserat pao RF- eller mikrovaogsresornatorer foer bestaemning av fiberorienteringen hos papper och kartong |
| EP1116951A4 (en) * | 1998-09-25 | 2003-05-14 | Oji Paper Co | METHOD AND DEVICE FOR MEASURING THE DIELECTRICITY CONSTANT |
| US6375875B1 (en) * | 2000-01-27 | 2002-04-23 | Ut-Battelle, Llc | Diagnostic monitor for carbon fiber processing |
| US6538454B1 (en) * | 2000-09-08 | 2003-03-25 | Yissum Research Development Company Of The Hebrew University Jerusalem | Near field microwave resistivity microscope including a dielectric resonator |
-
1997
- 1997-09-08 JP JP26098497A patent/JP3731314B2/ja not_active Expired - Fee Related
-
1998
- 1998-03-25 US US10/740,393 patent/USRE40488E1/en not_active Expired - Lifetime
- 1998-03-25 DE DE69835146T patent/DE69835146T2/de not_active Expired - Lifetime
- 1998-03-25 EP EP98911025A patent/EP0973025B1/en not_active Expired - Lifetime
- 1998-03-25 WO PCT/JP1998/001356 patent/WO1998044340A1/ja not_active Ceased
- 1998-03-25 CA CA002284900A patent/CA2284900C/en not_active Expired - Fee Related
- 1998-03-25 US US09/380,583 patent/US6396288B1/en not_active Ceased
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0339632B2 (ja) * | 1984-09-22 | 1991-06-14 | Kanzaki Paper Mfg Co Ltd | |
| JPH0229982B2 (ja) * | 1984-10-01 | 1990-07-03 | Kanzaki Paper Mfg Co Ltd | |
| JPH049467B2 (ja) * | 1985-03-07 | 1992-02-20 | ||
| JPH0714870Y2 (ja) * | 1986-02-18 | 1995-04-10 | 新王子製紙株式会社 | シート状物の高周波特性測定装置 |
| JPH01163645A (ja) * | 1987-12-21 | 1989-06-27 | Kanzaki Paper Mfg Co Ltd | シート状材料の高周波特性測定装置 |
| JPH01270648A (ja) * | 1988-04-22 | 1989-10-27 | Kanzaki Paper Mfg Co Ltd | 材料の電気的特性測定装置 |
| JPH0370368U (ja) * | 1989-11-08 | 1991-07-15 | ||
| JPH07225200A (ja) * | 1993-12-08 | 1995-08-22 | Nu Tech Gmbh | 物質の複素誘電率の測定方法および装置 |
| JPH07270342A (ja) * | 1994-02-08 | 1995-10-20 | New Oji Paper Co Ltd | 分子配向測定方法及び装置 |
| JPH08122375A (ja) * | 1994-10-26 | 1996-05-17 | Mitsubishi Heavy Ind Ltd | 液体の誘電特性測定装置 |
| JPH08271449A (ja) * | 1995-03-29 | 1996-10-18 | New Oji Paper Co Ltd | 分子配向測定装置および分子配向測定法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0973025A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2284900A1 (en) | 1998-10-08 |
| DE69835146D1 (de) | 2006-08-17 |
| EP0973025A1 (en) | 2000-01-19 |
| CA2284900C (en) | 2006-10-03 |
| JPH10325811A (ja) | 1998-12-08 |
| DE69835146T2 (de) | 2007-06-14 |
| JP3731314B2 (ja) | 2006-01-05 |
| EP0973025A4 (en) | 2003-02-12 |
| EP0973025B1 (en) | 2006-07-05 |
| USRE40488E1 (en) | 2008-09-09 |
| US6396288B1 (en) | 2002-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6496018B1 (en) | Method and device for measuring dielectric constant | |
| Khelif et al. | Guided elastic waves along a rod defect of a two-dimensional phononic crystal | |
| Wiltshire | Radio frequency (RF) metamaterials | |
| JP3731314B2 (ja) | 配向測定装置 | |
| Driscoll et al. | Electromagnetic characterization of planar metamaterials by oblique angle spectroscopic measurements | |
| JP3691812B2 (ja) | 共振器を用いて複素誘電率を測定する方法および前記方法を実施する装置 | |
| JP2000162158A (ja) | 誘電率測定方法及び装置 | |
| JP4072601B2 (ja) | 空洞共振器を用いて複素誘電率を測定する装置 | |
| Shimin | A new method for measuring dielectric constant using the resonant frequency of a patch antenna | |
| JPH0776777B2 (ja) | 材料の3次元方向の誘電率測定方法 | |
| Osaki | A new method for quick determination of molecular orientation in poly (ethylene terephthalate) films by use of polarized microwaves | |
| Regalla et al. | A low-cost reflection mode operated microwave resonator sensor for angular displacement detection | |
| US4781063A (en) | Method of measuring orientation of sheet or web like material | |
| JP3772603B2 (ja) | 配向測定装置 | |
| CN102612647A (zh) | 湿度测量 | |
| JPH01270648A (ja) | 材料の電気的特性測定装置 | |
| Osaki | A new microwave cavity resonator for determining molecular orientation and dielectric anisotropy of sheet materials | |
| WO2001020352A1 (en) | Quantitative imaging of dielectic permittivity and tunability | |
| JP4000789B2 (ja) | 配向測定装置 | |
| JP4107382B2 (ja) | 導電薄膜の導電性測定装置 | |
| JPH11287771A (ja) | マイクロ波を用いた分子配向度計測方法および装置 | |
| JP2009042007A (ja) | 配向測定装置及び配向測定方法 | |
| Diener | Microwaves for raster imaging of local anisotropies in polymer materials | |
| JPH09269301A (ja) | マイクロ波による配向性測定装置 | |
| Chung | Broadband characterization techniques for RF materials and engineered composites |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 09380583 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1998911025 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2284900 Country of ref document: CA Ref country code: CA Ref document number: 2284900 Kind code of ref document: A Format of ref document f/p: F |
|
| WWP | Wipo information: published in national office |
Ref document number: 1998911025 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1998911025 Country of ref document: EP |
