CN104316787A - Surface acoustic wave device testing device and testing method thereof - Google Patents
Surface acoustic wave device testing device and testing method thereof Download PDFInfo
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- CN104316787A CN104316787A CN201410535909.7A CN201410535909A CN104316787A CN 104316787 A CN104316787 A CN 104316787A CN 201410535909 A CN201410535909 A CN 201410535909A CN 104316787 A CN104316787 A CN 104316787A
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Abstract
The invention belongs to the technical field of testing of surface acoustic wave devices, and discloses a surface acoustic wave device testing device and a testing method thereof. The surface acoustic wave device testing device includes a vector network analyzer and a BNC connecting assembly, and is characterized by also comprising a testing calibration device, wherein the BNC connecting assembly is used for connecting the vector network analyzer to the testing calibration device; according to the surface acoustic wave device testing device, the vector network analyzer is directly connected to the testing calibration device by the BNC connecting assembly, so that errors of device test results are reduced, and cost is saved; a calibration port is selected by a double-pole double-throw switch, so that selection of calibration types is achieved, the required calibration type can be selected through opening and closing the corresponding switch according to requirements, and the problems about inconvenient operation and low efficiency due to that the test suite needs to be assembled and disassembled for many times in each calibration in the prior art are overcome.
Description
Technical field
The invention belongs to SAW (Surface Acoustic Wave) device technical field of measurement and test, be specifically related to a kind of SAW (Surface Acoustic Wave) device proving installation and method of testing thereof.
Background technology
SAW (Surface Acoustic Wave) device technology is the New borderline subjects that acoustics, electronics, optics, piezoelectric and semiconductor planar technique combine.SAW (Surface Acoustic Wave) device with good stability, anti-electromagnetic interference capability is strong, low in energy consumption, volume is little, quality is light etc., and series of advantages is widely used in multiple fields such as air traffic control, radar, sonar, electronic countermeasure, communication, environmental protection.The workload of the research of SAW (Surface Acoustic Wave) device, making and test thereupon widely application increase widely, problem is also following.
At present, what conventional SAW (Surface Acoustic Wave) device proving installation adopted is by signal wire to be connected on-line testing device with network analyzer and to test, although such device simplicity of design, save cost, but the transmission of signal wire can bring larger measuring error to test result, in addition, the on-line testing equipment connected by signal wire is easily rocked, and probably can bring unnecessary error to test result.Secondly, before SAW (Surface Acoustic Wave) device is tested, the calibration of network analyzer be carried out to reduce test error, during calibration, full dual-port usually can be selected to calibrate, will open a way to two ports, short circuit, load and transmission calibrate.But on-line testing equipment need unload when calibrating by existing proving installation, to be connected successively with signal wire to calibrate calibrating external member accordingly, primary calibration repeatedly need load and unload external member, so not only be inconvenient to operate but also waste of manpower resource and working time.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the object of the invention is to, a kind of SAW (Surface Acoustic Wave) device proving installation and method of testing are provided, this device can not only realize the SAW (Surface Acoustic Wave) device test of low error, and the selection of calibration port and type of calibration can be realized, both saved the SAW (Surface Acoustic Wave) device test duration, in turn saved human resources, with higher robotization and efficiency, SAW (Surface Acoustic Wave) device had been tested.
In order to realize above-mentioned task, the present invention by the following technical solutions:
A kind of SAW (Surface Acoustic Wave) device proving installation, comprises vector network analyzer and BNC coupling assembling, it is characterized in that, also comprise test calibration device; Vector network analyzer is connected with test calibration device by described BNC coupling assembling.
Further, described BNC coupling assembling comprises BNC adapter J6, J7, J11, J12, wherein, the output port of BNC adapter J6 male connected vector network analyzer, BNC adapter J6 female connects BNC adapter J11 one end male; The input port of BNC adapter J7 male connected vector network analyzer, BNC adapter J7 female connects BNC adapter J12 one end male.
Further, described test calibration device comprises BNC adapter J1, J2, J3, J4, J5, J8, J9 and J10, the first coaxial signal connecting line and the second coaxial signal connecting line, 6 switch S 0, S1, S2, S3, S4 and S5,1 24 leg base, wherein:
1 pin of described switch S 1 connects the interior pin pin of BNC adapter J1,2 pins connect No. 6 pins of 24 leg bases, the interior pin pin of BNC adapter J2 connects No. 19 pins of 24 leg bases, 3,5, No. 21 pins of 24 leg bases are connected with four pins of BNC adapter J1 periphery, and 20,4, No. 22 pins of 24 leg bases are connected with four pins of BNC adapter J2 periphery;
1 pin of described switch S 2 connects 1 pin of switch S 0, and 2 pins of switch S 2 are connected with pin pin in BNC adapter J3, and four pins of BNC adapter J3 periphery are connected with 6 pins of switch S 0, and BNC adapter J3 is connected with BNC adapter J8 male;
1 pin of described switch S 3 connects 1 pin of switch S 0, and 2 pins of switch S 3 are connected with pin pin in BNC adapter J4, and four pins of BNC adapter J4 periphery are connected with 6 pins of switch S 0, and BNC adapter J4 is connected with BNC adapter J9 male;
1 pin of described switch S 4 connects 1 pin of switch S 0, and 2 pins of switch S 4 are connected with pin pin in BNC adapter J5, and four pins of BNC adapter J5 periphery are connected with 6 pins of switch S 0, and BNC adapter J5 is connected with BNC adapter J10 male;
1 pin of described switch S 5 connects the interior pin pin of BNC adapter J1,2 pins of switch S 5 connect the interior pin lead-in wire 1 of the first coaxial signal connecting line, the peripheral leads 3 of the first coaxial signal connecting line connects four pins of the periphery of J1, the interior pin lead-in wire 2 of the second coaxial signal connecting line goes between with pin in J2 and is connected, and the peripheral leads 4 of the second coaxial signal connecting line is connected with the peripheral pin of J2;
2,3,4, No. 5 four pins of described switch S 0 to connect in J2 pin pin, the peripheral pin of J1, the peripheral pin of J2 in pin pin, J1 respectively.
Further, a kind ofly utilize above-mentioned SAW (Surface Acoustic Wave) device proving installation to carry out the method for SAW (Surface Acoustic Wave) device test, comprise the following steps:
1) adapter J6 male be connected with vector network analyzer output port, adapter J7 male is connected with vector network analyzer input port; Short circuit external member is connected with adapter J8 female, and open circuit external member is connected with adapter J9 female, and load external member is connected with adapter J10 female, the male of the first coaxial signal connecting line is connected by transmission external member with the male of the second coaxial signal connecting line.
2) vector network analyzer port is selected to carry out dissimilar calibration
Open circuit calibration: switch S 0 disconnects, switch S 2 closes, and carries out open circuit calibration to output port; Switch S 0 closes, and switch S 2 closed pair input port carries out open circuit calibration; Other switches disconnect;
Short circuit is calibrated: switch S 0 disconnects, and switch S 3 closes, and carries out short circuit calibration to output port, and switch S 0 closes, and switch S 3 closed pair input port carries out short circuit calibration; Other switches disconnect;
Load calibration: switch S 0 disconnects, switch S 4 closes, and carries out load calibration to output port, and switch S 0 closes, and switch S 4 closed pair input port carries out load calibration; Other switches disconnect;
Transmission calibration: switch S 5 closes, carries out transmission calibration to vector network analyzer; Other switches disconnect.
3) to be calibrated complete after, guarantee that other switches disconnect, Closing Switch S1, carry out the test of SAW (Surface Acoustic Wave) device.
The present invention compared with prior art, has following technique effect:
1, vector network analyzer is directly connected with test component by BNC coupling assembling by the present invention, vector network analyzer is connected rapidly with on-line testing device signal, and this connected mode can reduce outer signals interference, Reliability comparotive is high, thus reduces the error of device detection result.In addition, this kind of connected mode, is fixedly connected with proving installation with vector network analyzer and not easily rocks, also reduce unnecessary error.
2, the present invention selects calibration port by double-point double-throw switch, be provided with open circuit, short circuit, load and transmission calibrating installation in addition respectively, achieve the selection to type of calibration by switch, corresponding switch can be opened and closed as required to select required type of calibration.The primary calibration solving prior art repeatedly need load and unload being inconvenient to that external member causes and operate and inefficient problem.Both save human resources, vector network analyzer is calibrated easily and effectively, again save working time and the complexity avoiding calibration operation.
3, the present invention adopts bnc connector connected vector network analyzer and on-line testing device, not only easy to operate, and its structure and ingredient complexity low, the bnc connector cost of employing is far smaller than traditional signal wire.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the connection diagram of vector network analyzer of the present invention and BNC coupling assembling;
Fig. 3 is the connection diagram of the adapter in test calibration device of the present invention;
Fig. 4 is test calibration device circuit diagram of the present invention;
Centered by Fig. 5, frequency is the sound surface device frequency response characteristic test result of 101.764MHz.
Embodiment
Below provide specific embodiments of the invention, it should be noted that the present invention is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection scope of the present invention.
Embodiment:
Follow technical scheme of the present invention, this gives a kind of SAW (Surface Acoustic Wave) device proving installation, as shown in Figure 1, this device comprises vector network analyzer, BNC coupling assembling and test calibration device; Wherein, vector network analyzer is connected with test calibration device by BNC coupling assembling; Vector network analyzer comprises output port and input port; BNC coupling assembling comprises BNC adapter J6, J7, J11, J12; Test calibration device comprises BNC adapter J1, J2, J3, J4, J5, J8, J9 and J10, the first coaxial signal connecting line, the second coaxial signal connecting line, 6 switch S 0, S1, S2, S3, S4 and S5,1 24 leg base.
Switch S 1, S2, S3, S4, S5 are the switch key being with self-locking, and S0 is double-point double-throw switch.
Coaxial signal connecting line is the coaxial signal line of N-type male (in N-J in spiral shell pin).
J1, J2, J3, J4, J5 are 90 degree of bend cutting BNC adapters, J6, J7 are the BNC adapter that female (endoporus) turns male (in interior spiral shell pin), J8, J9, J10 are the BNC adapter that female (outer spiral shell endoporus) turns male (interior pin), and J11, J12 are the BNC adapter that male leads directly to.
This device each several part specifically connects as follows:
See Fig. 2, vector network analyzer output port is connected with BNC adapter J6 male, and adapter J6 female is connected with BNC adapter J11 one end male; Input port is connected with adapter J7 male; Adapter J7 female is connected with BNC adapter J12 one end male, in addition, the other end male of J11 is connected with BNC adapter J1, and the other end male of J12 is connected with BNC adapter J2, achieves the transmission of pumping signal from vector network analyzer to test calibration device; BNC coupling assembling can arrange its length, composition and type according to network analyzer interface.
See Fig. 3, Fig. 4,1 pin of switch S 1 connects the interior pin pin of BNC adapter J1,2 pins connect No. 6 pins of 24 leg bases, the interior pin pin of BNC adapter J2 connects No. 19 pins of 24 leg bases, 3,5, No. 21 pins of 24 leg bases are connected with four pins of BNC adapter J1 periphery, 20,4, No. 22 pins of 24 leg bases are connected with four pins of BNC adapter J2 periphery, form the online testing device of SAW (Surface Acoustic Wave) device.
1 pin of switch S 2 connects 1 pin of switch S 0,2 pins of switch S 2 are connected with pin pin in BNC adapter J3, four pins of BNC adapter J3 periphery are connected with 6 pins of switch S 0, and BNC adapter J3 is connected with BNC adapter J8 male, form open circuit calibrating installation.
1 pin of switch S 3 connects 1 pin of switch S 0,2 pins of switch S 3 are connected with pin pin in BNC adapter J4, four pins of BNC adapter J4 periphery are connected with 6 pins of switch S 0, and BNC adapter J4 is connected with BNC adapter J9 male, form short circuit calibrating installation.
1 pin of switch S 4 connects 1 pin of switch S 0,2 pins of switch S 4 are connected with pin pin in BNC adapter J5, four pins of BNC adapter J5 periphery are connected with 6 pins of switch S 0, and BNC adapter J5 is connected with BNC adapter J10 male, form load calibration device.
A coaxial signal connecting line is therefrom cut off and is cut into two sections, form the first coaxial signal connecting line and the second coaxial signal connecting line, wherein there is interior pin to go between and peripheral leads, the male of the first coaxial signal connecting line is connected by transmission external member with the male of the second coaxial signal connecting line.1 pin of switch S 5 connects the interior pin pin of BNC adapter J1,2 pins of switch S 5 connect the interior pin lead-in wire 1 of the first coaxial signal connecting line, the peripheral leads 3 of the first coaxial signal connecting line connects four pins of the periphery of J1, the interior pin lead-in wire 2 of the second coaxial signal connecting line goes between with pin in J2 and is connected, the peripheral leads 4 of the second coaxial signal connecting line is connected with the peripheral pin of J2, forms transmission calibrating installation.
2,3,4, No. 5 four pins of switch S 0 to connect in J2 pin pin, the peripheral pin of J1, the peripheral pin of J2 in pin pin, J1 respectively, are used for selecting the output port of vector network analyzer or input port to calibrate.
Principle of work of the present invention is as follows:
Double-point double-throw switch S0 is for selecting output port or the input port of vector network analyzer, and switch default conditions are output ports, and when after Closing Switch S0, pumping signal transmission is switched to input port, calibrates accordingly input port.As Closing Switch S2, pumping signal is transferred in short circuit calibrating installation carries out short circuit calibration; As Closing Switch S3, pumping signal is transferred in open circuit calibrating installation carries out open circuit calibration; As Closing Switch S4, pumping signal is transferred in load calibration device carries out load calibration; As Closing Switch S5, pumping signal is transferred in transmission calibrating installation carries out transmission calibration.
S1, S2, S3, S4, S5 switch can not close simultaneously, will determine that other switches are in off-state when a closed wherein switch, otherwise there will be test result mistake or the large phenomenon of error.
After completing calibration, Closing Switch S1, pumping signal is exported by output port, be transferred to SAW (Surface Acoustic Wave) device, be input to network analyzer finally by input port, every test parameter of network analyzer test display device and picture, complete the test of SAW (Surface Acoustic Wave) device.
Apply SAW (Surface Acoustic Wave) device proving installation of the present invention, carry out SAW (Surface Acoustic Wave) device method of testing and specifically comprise the steps:
1) adapter J6 male be connected with vector network analyzer output port, adapter J7 male is connected with vector network analyzer input port; Short circuit external member is connected with adapter J8 female, and open circuit external member is connected with adapter J9 female, and load external member is connected with adapter J10 female, the male of the first coaxial signal connecting line is connected by transmission external member with the male of the second coaxial signal connecting line.
2) vector network analyzer port is selected to carry out dissimilar calibration.Vector network analyzer comprises short circuit calibration, open circuit calibration, load calibration, transmission calibration, single port calibration and dual-port calibration.To the calibration of SAW (Surface Acoustic Wave) device test selection dual-port, dual-port calibration is calibrated the transmission that output port and input port carry out opening a way between calibration, short circuit calibration, load calibration and two ports respectively.
Open circuit calibration: switch S 0 disconnects, switch S 2 closes, and carries out open circuit calibration to output port; Switch S 0 closes, and switch S 2 closed pair input port carries out open circuit calibration, and other switches disconnect; When switch S 0 disconnects, 1 pin and 3 pins, 4 pins and 6 pin conductings; When switch S 0 closes, 1 pin and 2 pins, 6 pins and 5 pin conductings.
Short circuit is calibrated: switch S 0 disconnects, and switch S 3 closes, and carries out short circuit calibration to output port, and switch S 0 closes, and switch S 3 closed pair input port carries out short circuit calibration, and other switches disconnect;
Load calibration: switch S 0 disconnects, switch S 4 closes, and carries out load calibration to output port, and switch S 0 closes, and switch S 4 closed pair input port carries out load calibration, and other switches disconnect;
Transmission calibration: switch S 5 closes, carry out transmission calibration to vector network analyzer, other switches disconnect.
Be 101.764MHz for driving source centre frequency, bandwidth is the dual-port calibration of 30MHz.Before and after calibration, Data Comparison is as shown in table 1.
3) to be calibrated complete after, guarantee that other switches disconnect, Closing Switch S1, carry out the test of SAW (Surface Acoustic Wave) device.Select display format and content measurement by vector network analyzer, centered by Fig. 5, frequency is the sound surface device frequency response characteristic test result of 101.764MHz.
Claims (4)
1. a SAW (Surface Acoustic Wave) device proving installation, comprises vector network analyzer and BNC coupling assembling, it is characterized in that, also comprise test calibration device; Vector network analyzer is connected with test calibration device by described BNC coupling assembling.
2. a kind of SAW (Surface Acoustic Wave) device proving installation as claimed in claim 1, it is characterized in that, described BNC coupling assembling comprises BNC adapter J6, J7, J11, J12, wherein, the output port of BNC adapter J6 male connected vector network analyzer, BNC adapter J6 female connects BNC adapter J11 one end male; The input port of BNC adapter J7 male connected vector network analyzer, BNC adapter J7 female connects BNC adapter J12 one end male.
3. a kind of SAW (Surface Acoustic Wave) device proving installation as claimed in claim 2, it is characterized in that, described test calibration device comprises BNC adapter J1, J2, J3, J4, J5, J8, J9 and J10, first coaxial signal connecting line and the second coaxial signal connecting line, 6 switch S 0, S1, S2, S3, S4 and S5,1 24 leg base, wherein:
1 pin of described switch S 1 connects the interior pin pin of BNC adapter J1,2 pins connect No. 6 pins of 24 leg bases, the interior pin pin of BNC adapter J2 connects No. 19 pins of 24 leg bases, 3,5, No. 21 pins of 24 leg bases are connected with four pins of BNC adapter J1 periphery, and 20,4, No. 22 pins of 24 leg bases are connected with four pins of BNC adapter J2 periphery;
1 pin of described switch S 2 connects 1 pin of switch S 0, and 2 pins of switch S 2 are connected with pin pin in BNC adapter J3, and four pins of BNC adapter J3 periphery are connected with 6 pins of switch S 0, and BNC adapter J3 is connected with BNC adapter J8 male;
1 pin of described switch S 3 connects 1 pin of switch S 0, and 2 pins of switch S 3 are connected with pin pin in BNC adapter J4, and four pins of BNC adapter J4 periphery are connected with 6 pins of switch S 0, and BNC adapter J4 is connected with BNC adapter J9 male;
1 pin of described switch S 4 connects 1 pin of switch S 0, and 2 pins of switch S 4 are connected with pin pin in BNC adapter J5, and four pins of BNC adapter J5 periphery are connected with 6 pins of switch S 0, and BNC adapter J5 is connected with BNC adapter J10 male;
1 pin of described switch S 5 connects the interior pin pin of BNC adapter J1,2 pins of switch S 5 connect the interior pin lead-in wire 1 of the first coaxial signal connecting line, the peripheral leads 3 of the first coaxial signal connecting line connects four pins of the periphery of J1, the interior pin lead-in wire 2 of the second coaxial signal connecting line goes between with pin in J2 and is connected, and the peripheral leads 4 of the second coaxial signal connecting line is connected with the peripheral pin of J2;
2,3,4, No. 5 four pins of described switch S 0 to connect in J2 pin pin, the peripheral pin of J1, the peripheral pin of J2 in pin pin, J1 respectively.
4. utilize the SAW (Surface Acoustic Wave) device proving installation described in claim 3 to carry out a method for SAW (Surface Acoustic Wave) device test, comprise the following steps:
1) adapter J6 male be connected with vector network analyzer output port, adapter J7 male is connected with vector network analyzer input port; Short circuit external member is connected with adapter J8 female, and open circuit external member is connected with adapter J9 female, and load external member is connected with adapter J10 female, the male of the first coaxial signal connecting line is connected by transmission external member with the male of the second coaxial signal connecting line.
2) vector network analyzer port is selected to carry out dissimilar calibration
Open circuit calibration: switch S 0 disconnects, switch S 2 closes, and carries out open circuit calibration to output port; Switch S 0 closes, and switch S 2 closed pair input port carries out open circuit calibration; Other switches disconnect;
Short circuit is calibrated: switch S 0 disconnects, and switch S 3 closes, and carries out short circuit calibration to output port, and switch S 0 closes, and switch S 3 closed pair input port carries out short circuit calibration; Other switches disconnect;
Load calibration: switch S 0 disconnects, switch S 4 closes, and carries out load calibration to output port, and switch S 0 closes, and switch S 4 closed pair input port carries out load calibration; Other switches disconnect;
Transmission calibration: switch S 5 closes, carries out transmission calibration to vector network analyzer; Other switches disconnect.
3) to be calibrated complete after, guarantee that other switches disconnect, Closing Switch S1, carry out the test of SAW (Surface Acoustic Wave) device.
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Effective date of registration: 20180808 Address after: No. 1, Hubin Road, Sanmenxia, Henan, Henan Patentee after: Sanmenxia Suda Transportation Energy Saving Technology Co., Ltd. Address before: 710064 middle section of south 2nd Ring Road, Xi'an, Shaanxi Patentee before: Changan Univ. |