CN203825117U - Surface-mounted surface acoustic wave test box - Google Patents
Surface-mounted surface acoustic wave test box Download PDFInfo
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- CN203825117U CN203825117U CN201420194061.1U CN201420194061U CN203825117U CN 203825117 U CN203825117 U CN 203825117U CN 201420194061 U CN201420194061 U CN 201420194061U CN 203825117 U CN203825117 U CN 203825117U
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- testing cassete
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- under test
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Abstract
The utility model provides a surface-mounted surface acoustic wave test box. The surface-mounted surface acoustic wave test box comprises a test substrate, a test box base, a test box upper cover plate, a test box lower cover plate, a positioning gasket, a positioning threaded rod and radio-frequency conversion heads installed at two ends of the test box base; an undersurface middle area of the test substrate is provided with a to-be-tested device base, and the periphery of the to-be-tested device base is provided with a large area of copper-coated grounding surface; a front face middle area of the test substrate is provided with signal electrodes of the to-be-tested device base and the ground electrode, the signal electrodes and the ground electrode are connected with correspondingly bonding pads of the to-be-tested device base at the back face of the test substrate through metal via holes, and two side areas of the electrodes are provided with match circuits which connect the to-be-tested device base and the radio-frequency conversion heads; the test box base comprises an upper cavity and a lower cavity; the middle part of the undersurface of the test box upper cover plate is provided with a protruding part; and the middle part of the undersurface of the positioning gasket is provided with a groove for placing a to-be-tested device. The surface-mounted surface acoustic wave test box has the advantages of compact structure, low radio-frequency loss, the small parasitic effect, the high isolation degree, the strong anti-interference capability and convenient debugging and test operation.
Description
Technical field
The utility model relates to a kind of SAW (Surface Acoustic Wave) device proving installation, the especially testing cassete of surface-mount type SAW (Surface Acoustic Wave) device.
Background technology
SAW (Surface Acoustic Wave) device utilizes interdigital transducer in piezoelectric material surface, to excite, propagate and receive surface acoustic wave, complete electric signal from electricity to sound again to electric conversion and processing, realize the functions such as frequency stabilization, filtering.The same with other electron device, miniaturization, the chip type of SAW (Surface Acoustic Wave) device encapsulation are the trend of a development, correspondingly, need to have the device detection Method and kit for being consistent with it.Various SAW (Surface Acoustic Wave) device test fixtures in prior art and application can not meet design feature and the test request of surface-mount type SAW (Surface Acoustic Wave) device, and the electronic devices and components for matching and debugging are also mostly pins type element, when the weak point of bringing is thus test, the clamping of device is inconvenient, electrical contact is unreliable, spur signal coupling is serious, and radio frequency loss is large, has affected accuracy and the validity of test result.
Utility model content
The purpose of this utility model is for overcoming the above-mentioned shortcoming of acoustic current surface wave device proving installation.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of surface-mount type SAW (Surface Acoustic Wave) device testing cassete is provided, comprise test base, testing cassete base, testing cassete upper cover plate, testing cassete lower cover, locating shim, positioning screw and the radio frequency conversion head that is arranged on testing cassete base two ends, test base bottom surface central region is device under test pedestal, around for large area is applied copper ground plane, the positive central region of test base is device under test baseplate signal electrode and ground-electrode, by metallic vias, be connected with the corresponding pad of test base back side device under test pedestal, two side areas is for connecting the match circuit of device under test pedestal and radio frequency conversion head, testing cassete base comprises upper and lower two cavity volumes, the middle part, bottom surface of testing cassete upper cover plate is with lug boss, middle part, the bottom surface band of locating shim is useful on the groove of placing device under test.
Preferably, described test base is fixed on the bottom of cavity volume on testing cassete, described testing cassete upper cover plate lug boss contacts with the interelectrode ground-electrode of test base device under test baseplate signal and is connected, two parts that cavity volume on testing cassete and test base are divided into radio frequency isolation, cavity volume under testing cassete, device under test is embedded in locating shim groove, testing cassete lower cover covers on locating shim, positioning screw makes locating shim be fixed on testing cassete lower cover assigned address, and upwards compress device under test, make device under test electrode aim at and effectively contact with test base device under test pedestal respective electrode.
Preferably, described test base is made by high frequency double-side copper-applying plate, and described testing cassete base, testing cassete upper cover plate and testing cassete lower cover are made by metallic copper or aluminium, and described locating shim is made by organic material.
The utility model is integrated making debugging test SAW (Surface Acoustic Wave) device device under test socket and match circuit used on high frequency organic substrate, test base is fixed on metallic test box base, device input and output electrode and match circuit input/output section are two parts by radio frequency isolation, can lower cover, locating shim and set screw location device under test, make it effectively to be clamped and electric interconnection, whole proving installation compact conformation, radio frequency loss and ghost effect are little, isolation is high, antijamming capability is strong, and debugging test operation is convenient.
Accompanying drawing explanation
Fig. 1 is the utility model general structure vertical view and test base front layout.
Fig. 2 is the utility model test base back side layout.
Fig. 3 is A-A cut-open view in Fig. 1.
In figure: 1, test base, 11, device under test pedestal, 12, match circuit, 13, device under test baseplate signal electrode, 14, large area applies copper ground plane, 15, metallic vias, 2, testing cassete base, 21, testing cassete upper cover plate, 22, testing cassete lower cover, 23, test base fixed orifice, 24, fixed screw, 3, radio frequency conversion head, 4, locating shim, 5, device under test, 6, positioning screw.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, Figure 2 and Figure 3, the concrete implementation step for surface-adhered type SAW (Surface Acoustic Wave) device testing cassete is:
(1) adopt FR-4 high frequency double-side copper-applying plate to make test base 1, substrate bottom surface is device under test pedestal 11 and applies copper ground plane 14 around its large area around, front is device under test baseplate signal electrode 13, ground-electrode 14 and match circuit 12, and the counter electrode on substrate two sides is interconnected by metallic vias 15;
(2) adopt metallic aluminium processing and fabricating testing cassete base 2 and upper cover plate 21 and lower cover 22;
(3) adopt pmma substrate to make locating shim 4;
(4) with fixed screw 24, test base 1 is fixed on to cavity volume bottom on testing cassete, radio frequency conversion head 3 is arranged on can base two ends, and test base match circuit electrode and device under test pedestal and radio frequency conversion head counter electrode are electrically connected;
(5) fixed cover plate 21, its lug boss is contacted with the ground-electrode 14 of 13 of test base 1 front device under test base 11 signal electrodes and be connected;
(6) the locating shim 4 that is embedded with device under test 5 is positioned on test base 1 bottom surface device under test pedestal 11;
(7) fixing lower cover 22;
(8) install and adjust positioning screw 6, making device under test electrode aim at and effectively contact with test base 1 bottom surface device under test pedestal 11 respective electrode.
Claims (3)
1. a surface-mount type SAW (Surface Acoustic Wave) device testing cassete, it is characterized in that: comprise test base, testing cassete base, testing cassete upper cover plate, testing cassete lower cover, locating shim, positioning screw and the radio frequency conversion head that is arranged on testing cassete base two ends, test base bottom surface central region is device under test pedestal, around for large area is applied copper ground plane, the positive central region of test base is device under test baseplate signal electrode and ground-electrode, by metallic vias, be connected with the corresponding pad of test base back side device under test pedestal, two side areas is for connecting the match circuit of device under test pedestal and radio frequency conversion head, testing cassete base comprises upper and lower two cavity volumes, the middle part, bottom surface of testing cassete upper cover plate is with lug boss, middle part, the bottom surface band of locating shim is useful on the groove of placing device under test.
2. surface-mount type SAW (Surface Acoustic Wave) device testing cassete according to claim 1, it is characterized in that: described test base is fixed on the bottom of cavity volume on testing cassete, described testing cassete upper cover plate lug boss contacts with the interelectrode ground-electrode of test base device under test baseplate signal and is connected, two parts that cavity volume on testing cassete and test base are divided into radio frequency isolation, cavity volume under testing cassete, device under test is embedded in locating shim groove, testing cassete lower cover covers on locating shim, positioning screw makes locating shim be fixed on testing cassete lower cover assigned address, and upwards compress device under test, make device under test electrode aim at and effectively contact with test base device under test pedestal respective electrode.
3. surface-mount type SAW (Surface Acoustic Wave) device testing cassete according to claim 1, it is characterized in that: described test base is made by high frequency double-side copper-applying plate, described testing cassete base, testing cassete upper cover plate and testing cassete lower cover are made by metallic copper or aluminium, and described locating shim is made by organic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194061.1U CN203825117U (en) | 2014-04-21 | 2014-04-21 | Surface-mounted surface acoustic wave test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194061.1U CN203825117U (en) | 2014-04-21 | 2014-04-21 | Surface-mounted surface acoustic wave test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203825117U true CN203825117U (en) | 2014-09-10 |
Family
ID=51480599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420194061.1U Expired - Fee Related CN203825117U (en) | 2014-04-21 | 2014-04-21 | Surface-mounted surface acoustic wave test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203825117U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646184A (en) * | 2016-09-30 | 2017-05-10 | 扬州大学 | Testing structure and testing method of integrated packaged multichannel surface acoustic wave filter set |
| CN109188160A (en) * | 2018-11-02 | 2019-01-11 | 浙江万马集团特种电子电缆有限公司 | A kind of robot harness testing cassete |
-
2014
- 2014-04-21 CN CN201420194061.1U patent/CN203825117U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646184A (en) * | 2016-09-30 | 2017-05-10 | 扬州大学 | Testing structure and testing method of integrated packaged multichannel surface acoustic wave filter set |
| CN106646184B (en) * | 2016-09-30 | 2019-04-09 | 扬州大学 | The test structures and methods of integration packaging multichannel surface acoustic wave filter group |
| CN109188160A (en) * | 2018-11-02 | 2019-01-11 | 浙江万马集团特种电子电缆有限公司 | A kind of robot harness testing cassete |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |