WO2008015899A1 - Filter element and method for manufacturing filter element - Google Patents
Filter element and method for manufacturing filter element Download PDFInfo
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- WO2008015899A1 WO2008015899A1 PCT/JP2007/063989 JP2007063989W WO2008015899A1 WO 2008015899 A1 WO2008015899 A1 WO 2008015899A1 JP 2007063989 W JP2007063989 W JP 2007063989W WO 2008015899 A1 WO2008015899 A1 WO 2008015899A1
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- Prior art keywords
- line
- main surface
- filter element
- resonance
- resonance line
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
- H01P1/20327—Electromagnetic interstage coupling
- H01P1/20336—Comb or interdigital filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
Definitions
- the present invention relates to a filter element having a stripline resonator formed on a dielectric substrate.
- Patent Document 1 discloses a filter element in which a filter is configured by a plurality of stripline resonators provided on a single dielectric substrate.
- This filter element has a ground electrode on the back main surface and side surface of a flat dielectric substrate, and a short-circuited end near the boundary between the side surface and front surface of the dielectric substrate on the front main surface of the dielectric substrate.
- a resonance line is provided.
- combline coupling is strengthened by providing combline coupling main surface electrodes with the short-circuited and open ends of adjacent stripline resonators facing in the same direction, and a comb-line coupling principal surface electrode.
- Patent Document 2 discloses a filter element in which a plurality of sets of stripline resonators having different resonance frequencies are configured on the same dielectric substrate.
- This filter element has a ground electrode on part of the back main surface and side surface of a flat dielectric substrate, and a resonance line (strip line resonator) extends from the ground electrode on the back main surface to the side surface and front surface.
- a resonance line strip line resonator
- a second set in which a resonance line (strip line resonator) is extended from the wide ground electrode provided on a part of the side surface to the main surface of the surface.
- the first set of resonance lines has a short-circuited end near the boundary between the back main surface and the side surface of the dielectric substrate
- the second set of resonant lines has a short-circuited end near the boundary between the side surface of the dielectric substrate and the front main surface. It is.
- the first set and the second set of stripline resonators have different resonant frequencies.
- Patent Document 3 discloses a method for manufacturing an antenna element in which a surface mount antenna is configured using a stripline resonator.
- a circuit pattern is provided on a dielectric mother board, and then an antenna element element is formed from the dielectric mother board.
- the antenna element is manufactured by dividing the body and forming electrodes on the side surfaces of the antenna element element body.
- Patent Document 1 Japanese Patent Laid-Open No. 10-65401
- Patent Document 2 JP-A-7-58521
- Patent Document 3 Japanese Patent Laid-Open No. 10-107537
- the resonance characteristics of the stripline resonator depend on the shape of the line (circuit pattern) provided on the main surface of the dielectric substrate (dielectric mother substrate).
- the elements that set the resonance characteristics are concentrated on the main surface.
- an object of the present invention is to provide a filter element manufacturing method capable of adjusting the resonance characteristics of the stripline resonator even after the circuit pattern is formed, and to have a configuration other than the circuit pattern on the front main surface.
- An object of the present invention is to provide a filter element in which the resonance characteristics of a stripline resonator are adjusted.
- the line width of the side surface of the resonant line (hereinafter referred to as a side resonant line) and the front main surface of the resonant line (hereinafter referred to as the main surface resonant line) It was found that the resonance characteristics of the stripline resonator can be adjusted by setting the line width appropriately within a range in which the side resonance line does not act as a ground electrode.
- the resonance frequency of the stripline resonator can be increased, and the side resonance line
- the resonance frequency of the line resonator can be lowered, and the coupling between the resonators can be strengthened by reducing the distance between the side resonance lines of adjacent stripline resonators.
- the coupling between the resonators can be weakened.
- the filter element according to claim 1 of the present application includes a flat dielectric substrate and a ground electrode provided on the back main surface of the dielectric substrate.
- a plurality of stripline resonators each having a short-circuited end near the boundary between the side surface of the dielectric substrate and the back main surface, and a resonance line extending from the side surface force of the dielectric substrate to the front main surface.
- a filter element including an input / output terminal coupled to any one of the plurality of stripline resonators, wherein one of the plurality of stripline resonators has a line width of the resonance line of the main element. The surface is different from the side surface.
- a resonance line having a short-circuited end near the connection point between the side resonance line and the ground electrode is configured, and the line widths of the side resonance line and the main surface resonance line are made different, thereby forming a stripe.
- a filter element in which the resonance characteristic of the pipeline resonator, that is, the resonance frequency of the stripline resonator is adjusted can be configured.
- a stripline resonator to which the input / output terminal is coupled and a stripline adjacent to the stripline resonator
- the resonator is comb-line coupled, and the other strip line resonator is interdigitally coupled to the adjacent strip line resonator.
- a comb line coupling electrode for electrically connecting the two strip line resonators coupled to the comb line is provided on a short-circuit end side of the strip line resonator.
- the resonance mode in which the electric field distributions of the two stripline resonators are in phase with each other and a magnetic wall exists in the center, resonance occurs in an open state at the combline coupling electrode portion. Therefore, the resonator length in the odd mode is shortened and the frequency is increased, thereby increasing the difference between the resonance frequencies of the odd mode and the even mode, and a strong comb line coupling comparable to the interdigital coupling can be obtained.
- the comb line coupling electrode of the filter element of the invention according to claim 4 of the present application is an electrode provided on the front main surface of the dielectric substrate.
- the comb line coupling electrode that communicates between the resonance lines of the two strip line resonators that are comb line coupled is provided, but the strip line resonators are connected to each other by the resonance line on the side surface of the dielectric substrate. It is possible to adjust the degree of coupling and the resonance frequency of each of the stripline resonators.
- the center in the width direction on the side surface of the resonance line and the center in the width direction on the front main surface are eccentric.
- the electrode thickness of the resonance line on the side surface is , That is.
- the resonance line on the front main surface is formed from a photosensitive conductive paste
- the resonance line on the side surface, the ground electrode, and the front The entry output terminal is formed from a non-photosensitive conductor paste.
- the circuit pattern (resonant line) on the front main surface can be made into a fine pattern by photolithography.
- the resonance of the side surface The track, the ground electrode, and the input / output terminal can be manufactured by a simple process.
- the line width on the side surface of the resonant line is 0.5 times or more to less than 1 time the line width on the front main surface, or 1 More than double 1. Less than 1 time.
- the present invention shows a certain effect, and the filter characteristics can be adjusted effectively by adjusting the resonance frequency by adjusting the line width on the side surface of the dielectric substrate.
- an insulating layer is laminated on a front main surface side of the dielectric substrate, and an insulating layer extending from the side surface of the resonance line on a side surface of the insulating layer.
- a side electrode is provided.
- the insulating layer By laminating the insulating layer, it is possible to prevent the side surface pattern from being short-circuited to the connection unnecessary portion of the main surface pattern. Therefore, when manufacturing the filter element, the side surface of the insulating layer and the dielectric substrate are uniformly disposed on the side surface. A resonance line can be formed simply by forming side electrodes on the substrate. Therefore, the manufacturing process is simplified.
- a flat dielectric mother board in which a main surface resonance line is formed on the front main surface and a ground electrode is formed on the back main surface is divided.
- a dividing step of forming a plurality of filter element bodies, and a side surface of the filter element body formed by the dividing step from the main surface resonance line to the ground electrode, and a line of the main surface resonance line A conductor paste is printed with a line width different from the width, dried and fired to form a side resonance line, and the side surface of the filter element body and the side surface are formed by the main surface resonance line and the side resonance line.
- the resonance characteristics of the stripline resonator can be adjusted by the line width of the side electrode formed on the side surface.
- the resonant line forming step includes a filter element element extracted from the plurality of filter element elements formed by the dividing step. Forming the side resonance line with respect to the plurality of filter element bodies, and then forming the side resonance line with the optimized shape. is there. [0034] With this manufacturing method, it is possible to increase the mass productivity of a filter element that satisfies a desired resonance characteristic.
- the resonance characteristic of the stripline resonator can be adjusted by the resonance line on the side surface of the dielectric substrate, and a filter element that realizes a desired resonance characteristic can be provided.
- the characteristics of the stripline resonator can be adjusted even after the circuit pattern, the insulating layer, etc. are formed on the main surface of the dielectric substrate. It can be improved dramatically.
- FIG. 1 is a perspective view showing a configuration of a filter element according to a first embodiment.
- FIG. 2 is an exploded perspective view of the filter element of the same embodiment.
- FIG. 3 is a perspective view of the dielectric substrate of the same embodiment.
- FIG. 4 is a diagram for explaining a manufacturing process for the filter element according to the embodiment.
- FIG. 5 is a diagram illustrating a configuration of a filter element according to another embodiment.
- FIG. 1 is an external view of the filter element 100 of this embodiment.
- FIG. 4A is a perspective view in which the front surface (+ Y surface) of the filter element 100 is disposed facing left front.
- FIG. 4B is a perspective view in which the filter element 100 is also rotated 180 degrees around the Y axis in the state force of FIG.
- the filter element 100 used in the description of the present embodiment is a rectangular parallelepiped filter element, in which the front main surface side of the rectangular flat plate-like dielectric substrate 1 is covered with the glass layer 2.
- a circuit pattern (not shown) of a stripline resonator is provided on the main surface of the dielectric substrate 1, that is, between the dielectric substrate 1 and the glass layer 2, to constitute a filter. The configuration of the circuit pattern will be described later.
- This filter element 100 has a substrate thickness (Z-axis dimension) force of the dielectric substrate 1 of 00 ⁇ m and a glass layer 2 thickness (Z-axis dimension) force of 5 to 60 ⁇ m.
- the dimensions are about 9.5mm for the X-axis and about 2.2mm for the Y-axis.
- the filter element 100 is a small filter element that realizes a wideband filter characteristic used for UWB (Ultra Wide Band) communication.
- the dielectric substrate 1 is a substrate having a dielectric constant of about 110, which is a dielectric force of a ceramic such as titanium oxide. Further, the glass layer 2 does not have an insulator strength such as crystalline SiO and borosilicate glass.
- the light-transmitting glass layer and the light-shielding glass layer are laminated (not shown).
- the translucent glass layer is provided so as to be in contact with the dielectric substrate 1, and exhibits strong adhesion strength to the dielectric substrate 1 to prevent peeling of the circuit pattern on the dielectric substrate 1, Improve the environmental resistance of the circuit pattern and filter element 100.
- a linear expansion coefficient substantially equal to the dielectric expansion coefficient of the dielectric constituting the dielectric substrate 1 is realized, so that the dielectric substrate 1 and the glass layer 2 are The thermal stress of is made small.
- the light-shielding glass layer is obtained by laminating a glass containing an inorganic pigment on the translucent glass layer, and enables printing on the surface of the filter element, as well as an internal circuit. Achieve pattern confidentiality.
- the glass layer 2 is not necessarily required to have a two-layer structure, and the glass layer 2 may have a single-layer structure.
- whether the single-layer structure is made of a light-transmitting glass made of light-shielding glass is determined depending on whether the adhesion strength or the security and printability is prioritized. That's fine.
- composition and dimensions of the dielectric substrate 1 and the glass layer 2 described above may be set as appropriate in consideration of the degree of adhesion between the dielectric substrate and the glass layer, environmental resistance, filter characteristics, and the like. Yes.
- protruding electrodes 31A to 31F and 32A to 32E are formed on the front main surface of the glass layer 2. These protruding electrodes 31A to 31F and 32A to 32E are electrodes that protrude from the main surface during printing of side electrodes described later, and may not occur depending on printing conditions. In addition, the electrode protrudes from the back main surface of the filter element 100 during side electrode printing. The electrode protruding from the back main surface is integrated with the ground electrode 13 and terminal electrodes 17A and 17B.
- the filter element 100 has a high environmental resistance against external mechanical factors and thermal factors during use.
- ground electrode 13 On the back main surface of the dielectric substrate 1, a ground electrode 13 and terminal electrodes 17A and 17B are provided.
- the ground electrode 13 is a ground electrode of the stripline resonator, and also serves as a ground electrode for mounting the filter element 100 on the mounting board.
- the terminal electrodes 17A and 17B are connected to high-frequency signal input / output terminals when the filter element 100 is mounted on a mounting board.
- the ground electrode 13 is provided on substantially the entire back main surface side of the dielectric substrate 1, and the terminal electrodes 17A and 17B are arranged separately from the ground electrode 13 in the vicinity of the corner contacting the left side surface.
- Each of the ground electrode 13 and the terminal electrodes 17A and 17B is an electrode having a thickness (Z-axis direction) of about 15 m formed by printing and baking a conductive paste by screen printing or the like.
- Side electrodes 4A to 4F and side electrodes 5A to 5E are provided on the right and left sides of the filter element 100, respectively.
- the side electrodes 4A to 4F and the side electrodes 5A to 5E are composed of a side resonance line and an insulating layer side electrode.
- Side electrodes 4A to 4F and side electrodes 5A to 5E The back principal surface force of the dielectric substrate 1 is a rectangular electrode extending in the Z-axis direction over the front major surface of the glass layer 2, and is formed by printing and baking a conductive paste by screen printing etc. (Dimensions)
- the line widths of the side electrodes 4A to 4F and the side electrodes 5A to 5E will be described later.
- the side electrodes 4A to 4F are electrically connected to circuit patterns (not shown) provided between the dielectric substrate 1 and the glass layer 2 and the protruding electrodes 31A to 31F and the ground electrode 13, respectively.
- the side electrodes 5B to 5D are electrically connected to circuit patterns (not shown) provided between the dielectric substrate 1 and the glass layer 2, the protruding electrodes 32B to 32D, and the ground electrode 13, respectively.
- the side electrodes 5A and 5E are electrically connected to a circuit pattern (not shown) provided between the dielectric substrate 1 and the glass layer 2 and the protruding electrodes 32A and 32E and the terminal electrodes 17A and 17B, respectively.
- FIG. 2 is an exploded perspective view of the filter element 100, showing a state where the dielectric substrate 1 and the glass layer are separated! / Speak.
- Side resonance lines 14A to 14F are provided on the right side surface of the dielectric substrate 1, respectively. Further, side terminal electrodes 15A and 15E and side resonance lines 15B to 15D are provided on the left side.
- main surface resonance lines 12 A to 12 I and comb line coupling electrodes 16 A and 16 B are formed on the front main surface side of the dielectric substrate 1.
- Resonant lines 12A to 12I and comb line coupling electrodes 1 6A and 16B are silver electrodes with an electrode thickness (Z-axis dimension) of approximately 6 ⁇ m, and are electrodes formed by photolithography using a photosensitive silver paste. is there.
- the main surface resonance lines 12A to 12I and the comb line coupling electrodes 16A and 16B have an electrode thickness of about 6 m, whereas the side surface electrodes 4A to 4F and 5A to 5E have the electrode thicknesses described above. Is about 15 ⁇ m, and the side electrodes 4A to 4F and 5A to 5E are thicker. This is because the current is distributed and the conductor loss is reduced by setting the electrode thickness at the short-circuit end side of the resonant line where current concentration generally occurs. With this configuration, the filter element 100 is an element with a small insertion loss.
- the main surface resonance line 12A and the main surface resonance line 12B are rectangular electrodes, and are continuous with the side surface resonance lines 14A and 14B on the right side surface of the dielectric substrate 1, respectively.
- the main surface resonant line 12A is continuous with the side terminal electrode 15A on the left side of the front main surface, and the side terminal electrode 15A. Conductive to the terminal electrode 17A through the.
- the main surface resonance line 12A and the side surface resonance line 14A, and the main surface resonance line 12B and the side surface resonance line 14B form a resonance line, and each resonance line forms a strip line resonator together with the ground electrode 13. .
- a comb line coupling electrode 16A is provided between the main surface resonance line 12A and the main surface resonance line 12B, and is configured to be connected on the right side of the front main surface! / Speak.
- two stripline resonators each including the main surface resonance line 12A and the main surface resonance line 12B are comb-line coupled to each other. Between these two stripline resonators, there are resonant modes: an odd mode in which an electrical wall exists in the center between the resonant lines, and an even mode in which a magnetic wall exists in the center between the resonant lines. Arise. In the odd mode, the two stripline resonators are short-circuited by the combline coupling electrode 16A. On the other hand, in the even mode, the two stripline resonators are opened at the combline coupling electrode 16A.
- the odd mode resonator length is shortened and the frequency is increased. This increases the difference in the resonant frequency between the odd mode and the even mode, resulting in strong combline coupling comparable to interdigital coupling. It is done.
- the main surface resonance line 12H and the main surface resonance line 121 are respectively rectangular electrodes, and are continuous with the side surface resonance lines 14E and 14F on the right side surface of the dielectric substrate 1, respectively.
- the main surface resonance line 121 is continuous with the side terminal electrode 15E on the right side of the front main surface, and is electrically connected to the terminal electrode 17B via the side terminal electrode 15E.
- the main surface resonance line 12H and the side surface resonance line 14E, and the main surface resonance line 121 and the side surface resonance line 14F each form a resonance line, and each resonance line forms a strip line resonator together with the ground electrode 13.
- a comb line coupling electrode 16B is provided between the main surface resonance line 12H and the main surface resonance line 121, and the right side surface side of the front main surface is connected. Therefore, the stripline resonator including the main surface resonance line 12 H and the main surface resonance line, as well as the electrode including the main surface resonance line 12A, the main surface resonance line 12B, and the comb line coupling electrode 16A. A strong combline coupling comparable to the interdigital coupling can be obtained with the stripline resonator including 121.
- Main surface resonant lines 12C to 12G are rectangular silver electrodes, respectively.
- Main-surface resonant line 1 2C, 12E, 12G is continuous to side resonant lines 15B, 15C, 15D on the left side of dielectric substrate 1 And open on the right side.
- the main surface resonance lines 12D and 12F are continuous with the side resonance lines 14C and 14D on the right side surface of the dielectric substrate 1, and are open on the left side surface side.
- the main surface resonance lines 12C to 12G constitute a resonance line together with the side resonance lines 15B, 14C, 15C, 14D, and 15D, and constitute a strip line resonator together with the ground electrode 13.
- the stripline resonators are arranged so that the direction of the open end and the direction of the short-circuited end of each stripline resonator are staggered. Therefore, these stripline resonators are interdigitally coupled.
- the line width (Y-axis dimension) and the arrangement interval of the resonance lines constituting the main surface resonance lines 12A to 12I are adjusted in order to realize the required frequency characteristics.
- the line widths of the main surface resonant lines 12A to 12I are equal to each other in the arrangement interval.
- the present invention is not limited to the above configuration (line width and arrangement interval).
- the stripline resonator including the main surface resonance line 12A is tap-coupled to the terminal electrode 17A.
- the two stripline resonators that include the main-surface resonant line 12A and the main-surface resonant line 12B are comb-line coupled to each other, and the stripline resonator that includes the main-surface resonant line 12B is This is interdigitally coupled to a stripline resonator including the main surface resonant line 12C.
- the stripline resonator including the main surface resonance line 12C is interdigitally coupled to the stripline resonator including the main surface resonance line 12D.
- the stripline resonator including the main surface resonance line 12D is interdigitally coupled to the stripline resonator including the main surface resonance line 12E.
- the stripline resonator including the main surface resonance line 12E is interdigitally coupled to the stripline resonator including the main surface resonance line 12F.
- the stripline resonator including the main surface resonance line 12F is interdigitally coupled to the stripline resonator including the main surface resonance line 12G.
- the stripline resonator including the main surface resonance line 12G is interdigitally coupled to the stripline resonator including the main surface resonance line 12H.
- the two stripline resonators including the main surface resonant line 12H and the main surface resonant line 121 are comb-line coupled to each other. Strip composed of main surface resonance line 121 The line resonator is tapped to the terminal electrode 17B.
- this chip filter element constitutes a band-pass filter including a nine-stage resonator.
- a wide band characteristic is realized by obtaining a strong coupling by interdigital coupling, and a desired filter characteristic is obtained by using a high-frequency attenuation pole peculiar to the comb line coupling.
- the glass layer 2 is a glass layer formed by screen printing of glass paste or the like and formed by firing.
- the side electrodes 4A to 4F of the insulating layer constituting the side electrodes 34A are a glass layer formed by screen printing of glass paste or the like and formed by firing.
- a ⁇ 34F is provided.
- a plurality of insulating layer side electrodes 35A to 35E constituting side electrodes 5A to 5E are provided.
- the protruding electrodes 31A to 31 are provided on the front main surface.
- the dielectric substrate 1 and the glass layer 2 are thus laminated and the glass layer 2 is formed so as to cover the main-surface resonant lines 12A to 12I, the humidity, temperature, and mechanical properties of the filter element 100 are increased. Increases environmental resistance against damage.
- the side resonance line 14A is arranged at a position continuous from the main surface resonance line 12A, and the line width is narrower than the line width of the main surface resonance line 12A.
- the line widths of the side resonance lines 14B, 14C, 14E, and 14F are also made narrower than the line widths of the main surface resonance lines 12B, 12D, 12H, and 121, respectively.
- the line width on the side surface is smaller than the line width on the front main surface and larger than 0.5 times, In such a range, the fluctuation of the resonance frequency due to the setting of the line width on the side surface of the dielectric substrate becomes remarkable.
- the side resonance line 14D is arranged at a position continuous from the main surface resonance line 12F, and its line width is wider than that of the main surface resonance line 12F! .
- the line width on the side surface is larger than the line width on the front main surface and smaller than 1.1 times. In such a range, the dielectric substrate By setting the line width on the side, the filter characteristics can be adjusted effectively by adjusting the resonance frequency.
- the line width of the side resonance line is slightly larger than the line width of the main surface resonance line
- the line width on the main surface side of the resonance line is equal to the line width on the side surface side.
- the resonance frequency of the stripline resonator can be increased.
- the strength of the comb line coupling varies depending on the distance between the side resonance lines 14A and 14B. If the distance between the side resonance lines is narrowed, the coupling between the stripline resonators including them can be strengthened, and if the distance between the side resonance lines is widened, it is included. The coupling between the stripline resonators to be made can be weakened.
- Comb coupling can also be set by decentering the center in the width direction of the side resonance line and the center in the width direction of the main surface resonance line.
- the side resonance line 14B and the main surface resonance line 12B shown in the figure are decentered in the center in the width direction, and the side resonance line 14B is decentered toward the adjacent side resonance line 14A. In this way, combline coupling is strengthened.
- the resonance frequency of each resonator can be adjusted by the line width of the side resonance line on the side surface of the dielectric substrate.
- the side surface of the dielectric substrate side surface is provided while providing the comb line coupling electrode 16A that conducts between the resonance lines of the two strip line resonators that are comb line coupled.
- the comb line coupling electrode 16A that conducts between the resonance lines of the two strip line resonators that are comb line coupled.
- the line width of the side electrode has less influence on the change in the resonance frequency than the line width of the main surface electrode. Therefore, the resonance frequency of the filter element can be finely adjusted by adjusting the line width of the side electrode.
- (S7) An optimized side pattern having a line width and an arrangement interval capable of obtaining a desired resonance characteristic is selected by trial formation of side electrodes on the extracted filter element body, and then a plurality of the same substrate lots are selected.
- a conductor paste is printed on the side surface with an optimized side pattern, and the side electrode is formed through firing.
- the resonance characteristic of the stripline resonator can be adjusted by forming the side resonance line on the side surface, and the desired resonance characteristic can be reliably obtained. it can.
- the line width of the side electrode is larger than the line width of the main surface electrode! If the printing position is sometimes shifted, the width of the connection part between the side electrode and main surface electrode is likely to change! ⁇ . Since the resonance frequency may change due to this change in the width, the line width of the side electrode is preferably smaller than the line width of the main surface electrode. Thus, if the line width of the side electrode is smaller than the line width of the main surface electrode, the resonance line has a step impedance structure, and even if the line length of the main surface electrode is shortened, the resonance frequency can be easily obtained. Contributes to downsizing. Further, if the line width of the side electrode is smaller than the line width of the main surface electrode, the degree of freedom in adjusting the distance between the adjacent side electrodes increases, which contributes to facilitating adjustment of the coupling degree.
- the filter element 200 of the present embodiment is different from the filter element 100 shown in the first embodiment in the shape of the side resonance line provided on the side surface of the dielectric substrate 1. Specifically, the side resonance lines of the two stripline resonators that are comb-line coupled are widened in common. With such a configuration, the comb line coupling is further strengthened as compared with the filter element 100 of the first embodiment. Even in this case, it is possible to adjust the resonance frequency and the coupling degree to some extent by adjusting the line width and the eccentricity of the common side resonance line.
- the filter element 300 of the present embodiment has a configuration that uses only interdigital coupling instead of combline coupling for coupling between stripline resonators. Even with such a filter, the present invention can be suitably implemented.
- the arrangement configuration of the front main surface resonance line and the side resonance line described above is in accordance with the product specifications, and may have any shape in accordance with the product specifications.
- the number of stripline resonators is not limited to the above-described number.
- the present invention can be applied to configurations other than those described above, and various circuit patterns can be used as long as they constitute a resonant line having a short-circuited end near the connection point between the side surface resonant line of the stripline resonator and the ground electrode. Can be used for shapes.
- the present invention can also be applied to circuit patterns having various configurations of stripline forces.
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Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07790770A EP1933411A4 (en) | 2006-08-02 | 2007-07-13 | FILTER ELEMENT AND MANUFACTURING PROCESS FOR THE FILTER ELEMENT |
| JP2007556456A JP4591509B2 (ja) | 2006-08-02 | 2007-07-13 | フィルタ素子、およびフィルタ素子の製造方法 |
| US12/037,180 US7629867B2 (en) | 2006-08-02 | 2008-02-26 | Filter element and method for manufacturing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-211003 | 2006-08-02 | ||
| JP2006211003 | 2006-08-02 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/037,180 Continuation US7629867B2 (en) | 2006-08-02 | 2008-02-26 | Filter element and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008015899A1 true WO2008015899A1 (en) | 2008-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/063989 Ceased WO2008015899A1 (en) | 2006-08-02 | 2007-07-13 | Filter element and method for manufacturing filter element |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7629867B2 (ja) |
| EP (1) | EP1933411A4 (ja) |
| JP (1) | JP4591509B2 (ja) |
| CN (1) | CN101341627A (ja) |
| WO (1) | WO2008015899A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011058825A1 (ja) * | 2009-11-11 | 2011-05-19 | 株式会社村田製作所 | ストリップラインフィルタ、およびその製造方法 |
| KR101052721B1 (ko) * | 2009-05-12 | 2011-07-29 | 전자부품연구원 | 초광대역 필터 구조물 및 이를 구비한 인쇄 회로 기판 |
| KR101134980B1 (ko) * | 2009-05-22 | 2012-04-10 | 전자부품연구원 | 초광대역 안테나 및 필터 구조물을 내장한 인쇄 회로 기판 |
| WO2018198600A1 (ja) * | 2017-04-28 | 2018-11-01 | 株式会社村田製作所 | 電子部品 |
| RU2672821C1 (ru) * | 2017-10-30 | 2018-11-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнева" (СибГУ им. М.Ф. Решетнева) | Полосно-пропускающий фильтр |
| RU2684438C1 (ru) * | 2018-06-18 | 2019-04-09 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Полосковый фильтр |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010098407A (ja) * | 2008-10-15 | 2010-04-30 | Murata Mfg Co Ltd | ストリップラインフィルタ |
| WO2010137398A1 (ja) * | 2009-05-26 | 2010-12-02 | 株式会社村田製作所 | ストリップラインフィルタ |
| WO2011147469A1 (en) * | 2010-05-28 | 2011-12-01 | Verigy (Singapore) Pte. Ltd. | Electrical filter structure |
| US9209772B2 (en) | 2010-05-28 | 2015-12-08 | Advantest Corporation | Electrical filter structure |
| US9203371B2 (en) | 2010-05-28 | 2015-12-01 | Advantest Corporation | Electrical double filter structure |
| RU2480867C1 (ru) * | 2011-11-18 | 2013-04-27 | Федеральное государственное бюджетное учреждение науки Институт физики им. Л.В. Киренского Сибирского отделения Российской академии наук (ИФ СО РАН) | Полосно-пропускающий фильтр |
| CN110197940B (zh) * | 2019-06-13 | 2021-10-08 | 中国电子科技集团公司第二十九研究所 | 一种改进型发夹线滤波器及其操作方法 |
| CN110752424B (zh) * | 2019-09-03 | 2025-02-25 | 深圳振华富电子有限公司 | 微带线带通滤波器 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686501A (en) * | 1979-12-17 | 1981-07-14 | Matsushita Electric Ind Co Ltd | Band-pass filter |
| JPH03162001A (ja) * | 1989-11-20 | 1991-07-12 | Sanyo Electric Co Ltd | ストリップ線路フィルタ |
| JPH0492802U (ja) * | 1990-12-29 | 1992-08-12 | ||
| JPH06216605A (ja) * | 1992-11-27 | 1994-08-05 | Sanyo Electric Co Ltd | ストリップラインフィルタ |
| JPH0758509A (ja) * | 1993-08-20 | 1995-03-03 | Murata Mfg Co Ltd | チップ型フィルタ |
| JPH08148902A (ja) * | 1994-11-21 | 1996-06-07 | Murata Mfg Co Ltd | マイクロストリップラインフィルタおよびその調整方法 |
| JPH1056308A (ja) * | 1996-08-09 | 1998-02-24 | Murata Mfg Co Ltd | 誘電体フィルタの製造方法 |
| JPH11186812A (ja) * | 1997-12-22 | 1999-07-09 | Mitsubishi Electric Corp | 高周波フィルタおよび分波器 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4371853A (en) | 1979-10-30 | 1983-02-01 | Matsushita Electric Industrial Company, Limited | Strip-line resonator and a band pass filter having the same |
| JPS6243901A (ja) * | 1985-08-22 | 1987-02-25 | Murata Mfg Co Ltd | フイルタ |
| US5105173A (en) | 1989-11-20 | 1992-04-14 | Sanyo Electric Co., Ltd. | Band-pass filter using microstrip lines |
| JP2502824B2 (ja) * | 1991-03-13 | 1996-05-29 | 松下電器産業株式会社 | 平面型誘電体フィルタ |
| JP2851981B2 (ja) | 1991-12-25 | 1999-01-27 | 日本碍子株式会社 | 積層型誘電体フィルター |
| JPH05291802A (ja) | 1992-03-25 | 1993-11-05 | Ngk Insulators Ltd | 積層型誘電体フィルター及びその製造方法 |
| KR940704070A (ko) * | 1992-10-14 | 1994-12-12 | 모리시다 요오이찌 | 필터 및 그 제조방법(filter and method of manufacturing the same) |
| JPH06310919A (ja) * | 1993-04-27 | 1994-11-04 | Tokin Corp | 導体付誘電体共振器 |
| JPH0758521A (ja) | 1993-08-11 | 1995-03-03 | Murata Mfg Co Ltd | ストリップライン共振器 |
| JP2963835B2 (ja) | 1994-02-10 | 1999-10-18 | 日本碍子株式会社 | 積層型誘電体フィルタ |
| JP3120682B2 (ja) * | 1995-01-09 | 2000-12-25 | 株式会社村田製作所 | チップ型フィルタ |
| JPH1022702A (ja) * | 1996-07-05 | 1998-01-23 | Murata Mfg Co Ltd | 誘電体フィルタおよびその製造方法 |
| JPH1065401A (ja) | 1996-08-13 | 1998-03-06 | K Lab:Kk | 帯域通過フィルタ |
| JPH10107537A (ja) | 1996-10-01 | 1998-04-24 | Murata Mfg Co Ltd | 表面実装型アンテナの製造方法 |
| DE19652799C2 (de) * | 1996-12-18 | 1999-05-20 | Siemens Ag | Mikrowellenfilter |
| US5994978A (en) * | 1998-02-17 | 1999-11-30 | Cts Corporation | Partially interdigitated combline ceramic filter |
| JP3498649B2 (ja) * | 1998-11-13 | 2004-02-16 | 株式会社村田製作所 | 誘電体フィルタ、デュプレクサおよび通信装置 |
| JP2000252704A (ja) * | 1999-03-02 | 2000-09-14 | Toko Inc | 誘電体フィルタ |
-
2007
- 2007-07-13 CN CNA2007800008707A patent/CN101341627A/zh active Pending
- 2007-07-13 WO PCT/JP2007/063989 patent/WO2008015899A1/ja not_active Ceased
- 2007-07-13 EP EP07790770A patent/EP1933411A4/en not_active Withdrawn
- 2007-07-13 JP JP2007556456A patent/JP4591509B2/ja active Active
-
2008
- 2008-02-26 US US12/037,180 patent/US7629867B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686501A (en) * | 1979-12-17 | 1981-07-14 | Matsushita Electric Ind Co Ltd | Band-pass filter |
| JPH03162001A (ja) * | 1989-11-20 | 1991-07-12 | Sanyo Electric Co Ltd | ストリップ線路フィルタ |
| JPH0492802U (ja) * | 1990-12-29 | 1992-08-12 | ||
| JPH06216605A (ja) * | 1992-11-27 | 1994-08-05 | Sanyo Electric Co Ltd | ストリップラインフィルタ |
| JPH0758509A (ja) * | 1993-08-20 | 1995-03-03 | Murata Mfg Co Ltd | チップ型フィルタ |
| JPH08148902A (ja) * | 1994-11-21 | 1996-06-07 | Murata Mfg Co Ltd | マイクロストリップラインフィルタおよびその調整方法 |
| JPH1056308A (ja) * | 1996-08-09 | 1998-02-24 | Murata Mfg Co Ltd | 誘電体フィルタの製造方法 |
| JPH11186812A (ja) * | 1997-12-22 | 1999-07-09 | Mitsubishi Electric Corp | 高周波フィルタおよび分波器 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1933411A4 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101052721B1 (ko) * | 2009-05-12 | 2011-07-29 | 전자부품연구원 | 초광대역 필터 구조물 및 이를 구비한 인쇄 회로 기판 |
| KR101134980B1 (ko) * | 2009-05-22 | 2012-04-10 | 전자부품연구원 | 초광대역 안테나 및 필터 구조물을 내장한 인쇄 회로 기판 |
| WO2011058825A1 (ja) * | 2009-11-11 | 2011-05-19 | 株式会社村田製作所 | ストリップラインフィルタ、およびその製造方法 |
| WO2018198600A1 (ja) * | 2017-04-28 | 2018-11-01 | 株式会社村田製作所 | 電子部品 |
| TWI675386B (zh) * | 2017-04-28 | 2019-10-21 | 日商村田製作所股份有限公司 | 電子零件 |
| RU2672821C1 (ru) * | 2017-10-30 | 2018-11-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнева" (СибГУ им. М.Ф. Решетнева) | Полосно-пропускающий фильтр |
| RU2684438C1 (ru) * | 2018-06-18 | 2019-04-09 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Полосковый фильтр |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1933411A4 (en) | 2010-12-15 |
| JPWO2008015899A1 (ja) | 2009-12-17 |
| US7629867B2 (en) | 2009-12-08 |
| CN101341627A (zh) | 2009-01-07 |
| EP1933411A1 (en) | 2008-06-18 |
| US20080143458A1 (en) | 2008-06-19 |
| JP4591509B2 (ja) | 2010-12-01 |
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