JPH0631432Y2 - Microwave measurement jig - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a microwave measuring jig for measuring electric characteristics of microwave circuit components such as filters and amplifiers.

[Prior art]

Conventionally, when measuring the electrical characteristics of microwave circuit components such as filters and amplifiers, for example, a microstrip line 11 having a predetermined length 1 is provided between the coaxial connectors 10 and 10 shown in FIG.
The microstrip line 11 'is provided between the calibration jig 4 integrated with the coaxial / microstripline conversion block 12 connected with the coaxial connector 10 and the coaxial connector 10 shown in FIG. 6, for example.
And 11 ″ are divided into two coaxial / microstripline conversion blocks 12 ′ and 12 ″ having a total length of 1, and a microwave circuit is provided between the two coaxial / microstripline conversion blocks 12 ′ and 12 ″. It is practiced to use two kinds of jigs such as a measuring jig 5 for sandwiching and measuring the component 2. Alternatively, for example, coaxial / microstripline conversion of the measuring jig 5 shown in FIG. The through holes 12'a, 12'a and 12 "a, 12" a are arranged parallel to both sides of the microstrip lines 11 'and 11 "of the blocks 12' and 12", respectively, and spaced from the microstrip lines 11 'and 11 ". And the microstripline conversion blocks 12 'and 12 "between the microstriplines 11' and 11", and the measurement jig main body provided so as to penetrate into the recess provided perpendicularly to the microstriplines 11 'and 11 ". Holes 12'a, 12'a and 12 "a, 12" seventh of four screws 15 having a thread pitch that penetrates to a
The microwave measurement jig 6 shown in FIG. 10 is used.

[Problems to be solved by the device]

Here, when using two kinds of jigs, the calibration jig 4 shown in FIG. 5 and the measurement jig 5 shown in FIG. 6, an error occurs in the calibration due to the individual difference of each jig, Poor measurement accuracy is a problem. On the other hand, when using the microwave measuring jig 6 shown in FIGS.
The microstripline conversion blocks 12 ', 12 "are joined together, and the microstripline conversion blocks 12', 12" are pierced so that the open ends of the microstriplines 11 ', 11 "are connected to each other. hole
The coaxial / microstrip line conversion blocks 12 ′ and 12 ″ are connected to 12′a and 12 ″ a, and the base 7 having two screw holes 7b to be screwed into the screws 15 is sandwiched between the bases 7 and 4 ′. Two coaxial / microstrip line conversion blocks, which are fixed with screws 15 as shown in Figs. 9 and 10 during measurement.
The microwave circuit component 2 is sandwiched between 12 'and 12 ", and the portion sandwiched by the table 7 in the recess between the coaxial / microstrip line conversion blocks 12' and 12" is a microwave circuit component 2 minutes longer. The coaxial / microstripline conversion blocks 12 ′ and 12 ″ are screwed to the base 8 having two screw holes 8b similar to the screw holes 7b with four screws 15 in this way. 4 screws for calibration and measurement
Attaching and detaching 15 is a problem in that it requires a lot of labor, especially when repeating the measurement many times, the measurement takes time, and the manufacturing cost is high due to the complicated structure. There is. The present invention has been made in view of the above circumstances, and provides a microwave measuring jig which can reduce the burden of labor due to the screwing and can measure the electrical characteristics of microwave circuit components and calibrate before measurement with good work efficiency. The purpose is to

[Means for Solving the Problems]

The present invention comprises a pair of coaxial / microstrip line conversion blocks having a microstrip line with a coaxial connector connected at one end, and the pair of coaxial / microstrip line conversion blocks are screwed together.
By joining the microstrip line conversion blocks, screw holes and through holes that enable the other ends of the microstrip lines to be connected to each other are provided in the respective coaxial and
The microstrip line conversion block is composed of a measurement jig main body opened in parallel with both sides of the microstrip line, and a plurality of screws screwed into the screw holes. In that it is a microwave measuring jig for connecting and calibrating, and sandwiching a microwave circuit component between the pair of coaxial / microstrip line conversion blocks to measure the electrical characteristics of the microwave circuit component. Is the same as the conventional microwave measuring jig described in the second above, but unlike this type of microwave measuring jig, the plurality of screws are attached to the pair of coaxials whose pitch lengths are equal to each other.・ Two short screws longer than any length of the microstrip line conversion block and shorter than both lengths, and the length of the pitch portion is larger than that of the short screw. It is obtained by achieving the above objects by which the two types of pairs of coaxial-microstrip line converter block microwave circuit components equivalent to the length longer two long screws sandwiching between.

[Action]

According to the microwave measurement jig having the above configuration, a pair of coaxial
A pair of coaxial / microstripline conversion blocks are inserted by aligning the end faces of the microstripline conversion blocks on the open end side and alternately inserting two short screws through the screw holes of each coaxial / microstripline conversion block. Are joined together to connect the open ends of the respective microstrip lines to each other to prepare for calibration. Also, sandwich the microwave circuit component between the end faces of the microstrip lines of the pair of coaxial / microstripline conversion blocks and insert two long screws alternately from the screw holes of each coaxial / microstripline conversion block. Then, the pair of coaxial / microstrip line conversion blocks are joined to each other to prepare for measurement of the electrical characteristics of the microwave circuit component.

【Example】

Hereinafter, the present invention will be described in more detail with reference to embodiments together with the drawings. FIGS. 1 to 4 show an example of the microwave measuring jig of the present invention and its use state at the time of calibration and measurement. The main body of the microwave measuring jig 1 is shown in FIGS. Compared with the main body of the microwave measurement jig 6 shown, there is no recess extending between the coaxial / microstrip line conversion blocks 12 ', 12 ", and the through holes 12'a, 12'a and 12" a, 1 respectively.
The structure is the same except that one of the 2 "a has screw holes 12'b and 12" b alternately. Therefore, the coaxial / microstrip line conversion block 1
There is no need to put a stand between 2'and 12 ", and the third and fourth
As shown in the figure, the table 3 is used while being used during measurement.
This table 3 is not a convex shape like the table 8 in the case of the microwave measuring jig 6 shown in FIGS. 9 and 10, but a flat plate-like one is used, and this table 3 has a coaxial / microstrip line conversion block. Two through holes 3a are provided which communicate with the through holes 12'a and the screw holes 12 "b of 12 'and 12" and between the screw holes 12'b and the through holes 12 "a, respectively. In the microwave measurement jig 1 shown, the coaxial / microstrip line conversion blocks 12 ′, 12 ″ are used.
Of two short screws 13 longer than any of the two and the length of the pitch portion between the coaxial / micro strip line conversion blocks 12 ', 12 " Two long screws 14 which are longer than the length of the wave circuit component 2 are used, and this point is different from the microwave measuring jig shown in Fig. 7 to 10 which uses four screws 14. When calibrating before measuring the electrical characteristics of the circuit component 2, the microstrip line of the coaxial / microstrip line conversion block 12 ', 12 "is used.
Coaxial / microstrip line by alternately inserting two short screws 13 from the through-holes 12'a, 12 "a of the coaxial / microstripline conversion blocks, matching the open end side surfaces of 11 ', 11". The conversion blocks 12 ', 12 "are screwed together and joined to each other so that the open ends of the respective microstrip lines 11', 11" are connected to each other. Next, when the electrical characteristics of the microwave circuit component 2 are measured, the microwave circuit component 2 is placed between the open end side end faces of the microstrip lines 11 ', 11 "of the coaxial / microstrip line conversion blocks 12', 12". By inserting the two long screws 14 alternately through the through holes 12'a, 12 "a of the respective coaxial / microstrip line conversion blocks and screwing them together. 12 ″ is joined. The embodiment of the present invention has been described above, but the microwave measuring jig of the present invention further accurately positions the microwave circuit component to be measured, so that the base 3 and the microstrip line conversion block shown in FIG. 4 are shown. Open the microstrip lines 11 ', 11 "to provide a guide pin on either 12' or 12" and a slot to fit the guide pin at the corresponding position on the other, or to perform sufficient grounding. End or coaxial / microstrip line conversion block 1
Various modifications are possible within the range described in the scope of claims for utility model registration, for example, a protrusion may be provided at the lower end of 2 ', 12 "to securely connect to the ground of the microwave circuit component 2. .

[Effect of device]

As described above, the microwave measuring jig of the present invention has a structure in which calibration and measurement of electric characteristics of microwave circuit components can be performed by the same jig, so that the calibration can be performed accurately and accuracy can be improved. It is possible to measure the electrical characteristics of high microwave circuit components. In addition, the structure is such that calibration and measurement of electric characteristics of microwave circuit parts are performed by screwing with two screws.
Compared with a conventional microwave measuring jig that is fixed with four screws, the workability is good and the structure is simple, so the manufacturing cost is low.

[Brief description of drawings]

1 is a plan view schematically showing a configuration example of a microwave measuring jig of the present invention at the time of calibration, FIG. 2 is a side view of the microwave measuring jig of FIG. 1, and FIG. FIG. 4 is a plan view schematically showing a configuration example of a microwave measuring jig of the present invention at the time of measurement, FIG. 4 is a side view of the microwave measuring jig of FIG. 2, and FIG. FIG. 6 is a plan view schematically showing an example of a calibration jig related to a jig, and FIG. 6 is an example of a measurement jig related to a conventional microwave measurement jig used together with the calibration jig shown in FIG. FIG. 7 is a plan view schematically showing a configuration example of a conventional microwave measurement jig at the time of calibration, and FIG. 8 is a side view of the microwave measurement jig shown in FIG. Fig. 9 is a plan view schematically showing a configuration example of a conventional microwave measurement jig at the time of measurement, and Fig. 10 is a side view of the microwave measurement jig of Fig. 9. A. 1, 6 ... Microwave measuring jig, 2 ... Microwave circuit parts, 3, 7, 8 ... Stand, 4 ... Calibration jig, 5 ... Measuring jig, 10 ... Coaxial connector, 11,11 ', 11 "... Microstrip line, 12,12', 12" ... Microstrip line conversion block 3a, 12'a, 12 "a
...... Through hole, 7b, 8b, 12'b, 12 "b ...... Screw hole,
13,14,15 …… Screws.

Claims (1)

[Scope of utility model registration request] 1. A pair of coaxial / microstripline conversion blocks each having a microstripline having a coaxial connector connected to one end thereof, wherein the pair of coaxial / microstripline conversion blocks are joined with a screw to join the microstripline. Of the coaxial and microstripline conversion blocks, each of which has a threaded hole and a through hole that allow the other ends of the two to be connected to each other, are pierced in parallel to both sides of the microstripline, and the threaded hole is formed. And a plurality of screws that are screwed together, the other ends of the microstrip lines are connected to each other for calibration, and a microwave circuit component is sandwiched between the pair of coaxial / microstripline conversion blocks. Microwave measuring jig for measuring electrical characteristics of microwave circuit components In the above, the plurality of screws are two short screws each having a pitch portion longer than any length of the pair of coaxial / microstrip line conversion blocks and shorter than both lengths, and a pitch portion length. 2 is longer than the short screw by the length of the microwave circuit component sandwiched between the pair of coaxial / microstrip line conversion blocks.
A microwave measuring jig characterized in that there are two types of long screws, and the workability is simplified by alternately inserting each type of screw.