CN219065630U - Multichannel vector network analyzer - Google Patents
Multichannel vector network analyzer Download PDFInfo
- Publication number
- CN219065630U CN219065630U CN202223329670.7U CN202223329670U CN219065630U CN 219065630 U CN219065630 U CN 219065630U CN 202223329670 U CN202223329670 U CN 202223329670U CN 219065630 U CN219065630 U CN 219065630U
- Authority
- CN
- China
- Prior art keywords
- board
- network analyzer
- vector network
- test
- channel switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a multichannel vector network analyzer, which comprises an industrial personal computer, a vector network analyzer, an ARM development board, a receiving channel switch, a power supply board, a digital multimeter board, a transmitting channel switch, a substrate and a signal transmission board. According to the utility model, the ARM control system and the vector network analyzer are combined into the multi-channel vector network analyzer testing equipment, so that 256 maximum testing channels can be provided for the device to be tested, and the power supply required by the device to be tested and the communication signals including IIC, SPI and GPIO can support more kinds of devices to be tested to test. Meanwhile, based on the characteristics of ARM (advanced RISC machines) of natural programmability and reconfigurability, the interfaces of the parts are flexible, the compatibility is strong, and the test configuration can be adjusted according to the test requirements of various devices to be tested, so that the most comprehensive test of each type of device to be tested is achieved. The utility model is widely applied to the technical field of signal transmission measurement.
Description
Technical Field
The utility model relates to the technical field of signal transmission measurement, in particular to a multichannel vector network analyzer.
Background
With the development of technology, vector network analyzers (Vector Network Analyzer, VNA) have also changed from early methods of testing complex reflectance using slotlines to methods of automatic calculation using computers, from manual tuning measurements to enabling sweep amplitude and phase measurements, from single-function to multi-function, from bulky to miniaturized, etc.
However, most of the vector network analyzers commonly used in the prior art only have fewer test channels, such as two channels, four channels, and the like. Thus, when testing parameters such as transmission measurements, reflection measurements, signal integrity, etc. on some cable harnesses, printed wiring boards, connectors, etc., the number of channels of the vector network analyzer does not meet the test requirements. The prior art solution is to extend the test channel on a vector network analyzer, but there is also a problem of high cost.
Disclosure of Invention
In view of this, the embodiment of the utility model provides a multi-channel vector network analyzer.
The embodiment of the utility model provides a multichannel vector network analyzer, which comprises an industrial personal computer, a vector network analyzer, an ARM development board, a receiving channel switch, a power supply board, a digital multimeter board, a transmitting channel switch, a substrate and a signal transmission board; the industrial personal computer is connected with the vector network analyzer, the ARM development board and the digital multimeter board; the vector network analyzer is connected with the receiving channel switch and the sending channel switch; the base plate is connected with the ARM development board, the receiving channel switch, the sending channel switch and the signal transmission board; the signal transmission board is connected with the ARM development board, the power supply board and the digital multimeter board; the ARM development board is connected with the power supply board;
the device to be tested establishes connection with the multichannel vector network analyzer through the signal transmission plate.
Further, an ARM chip is arranged in the ARM development board, and the opening and the closing of the test channel are controlled through the ARM chip.
Further, the power supply board comprises 4 DC-DC power isolation modules and 5 LDO voltage regulators.
Further, the receiving channel switch and the sending channel switch comprise 256 test channels consisting of 512 high-frequency optocouplers.
Further, the digital multimeter board comprises at least two resistor acquisition channels and a plurality of voltage acquisition channels.
Further, the vector network analyzer outputs a test signal through a transmission channel switch; the vector network analyzer receives the received signal via the receive channel switch.
Further, after receiving the return signal, the vector network analyzer transmits a test result generated by the return signal to the industrial personal computer.
Further, the industrial personal computer sends test parameters and test types to an ARM development board; and the ARM development board controls the power supply board to send corresponding power signals to the device to be tested through the signal transmission board according to the received test parameters and the test types.
Further, the ARM development board also sends corresponding communication signals to the device to be tested through the signal transmission board according to the received test parameters and the test types; and transmitting the communication result to the industrial personal computer.
Further, the digital multimeter board reads the test result of the voltage and/or the resistance through the signal transmission board and sends the test result of the voltage and/or the resistance to the industrial personal computer.
The technical scheme in the embodiment of the utility model has the following advantages: according to the embodiment of the multi-channel vector network analyzer, the ARM control system and the vector network analyzer are combined into the multi-channel vector network analyzer testing equipment, so that the multi-channel vector network analyzer can provide 256 maximum testing channels for devices to be tested, and power supplies and communication signals including IIC, SPI and GPIO required by the devices to be tested can support more types of devices to be tested to test. Meanwhile, based on the characteristics of ARM (advanced RISC machines) natural programmability and reconfigurability, the 256 channels can be automatically tested by utilizing the advantages of test software of an industrial personal computer, an operator can automatically complete all channel tests by configuring parameters and the number of channels to be tested on the test software, judgment and analysis are carried out on the data.
Drawings
FIG. 1 is a block diagram of the overall structure of a multi-channel vector network analyzer of the present utility model;
fig. 2 is a test flow chart of a multi-channel vector network analyzer according to the present utility model.
FIG. 3 is a schematic diagram showing the test of the mutual interference between channels of a multi-channel vector network analyzer according to the present utility model
FIG. 4 is a schematic diagram of a signal integrity test of a multi-channel vector network analyzer according to the present utility model;
reference numerals:
fig. 1:1-1, an industrial personal computer; 1-2, a vector network analyzer; 1-3, ARM development board; 1-4, a receiving channel switch; 1-5, a power supply board; 1-6, a digital multimeter board; 1-7, a transmission channel switch; 1-8, a substrate; 1-9, a signal transmission plate; 1-10, devices to be tested.
Fig. 3:3-1, an SMA external interface; 3-2, a transmission channel switch; 3-3, simulating a load resistor; 3-4, a transmission channel switch; 3-5, a device to be tested; 3-6, a receiving channel switch; 3-7, a receiving channel switch; 3-8, simulating a load resistor; 3-9, SMA external interface.
Fig. 4:4-1, an SMA external interface; 4-2, a transmission channel switch; 4-3, a device to be tested; 4-4, a receiving channel switch; 4-5, SMA external interface.
Detailed Description
The utility model is further explained and illustrated below with reference to the drawing and the specific embodiments of the present specification.
The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
The embodiment of the utility model discloses a multichannel vector network analyzer. As shown in FIG. 1, the system comprises an industrial personal computer (IPC, industrial Personal Computer) 1-1, a vector network analyzer 1-2, an ARM development Board (ARM Board) 1-3, a receiving Channel Switch (CH Switch (RX), a Channel Switch (Receive)) 1-4, a power supply Board (Power Supply Board) 1-5, a digital multimeter Board 1-6, a transmitting Channel Switch (CH Switch (TX), channel Switch (Transport)) 1-7, a substrate (Base Board) 1-8 and a signal transmission Board (Signal Transfer Board) 1-9. The industrial personal computer 1-1 is connected with the vector network analyzer 1-2, the ARM development board 1-3 and the digital multimeter board 1-6; the vector network analyzer 1-2 is connected with the receiving channel switch 1-4 and the sending channel switch 1-7; the base plate 1-8 is connected with the ARM development board 1-3, the receiving channel switch 1-4, the sending channel switch 1-7 and the signal transmission board 1-9; the signal transmission board 1-9 is connected with the ARM development board 1-3, the power supply board 1-5 and the digital multimeter board 1-6; the ARM development board 1-3 is connected with the power supply board 1-5; the devices under test (DUT, device Under Test) 1-10 establish a connection with the multichannel vector network analyzer via signal transmission boards 1-9.
In this embodiment, the industrial personal computer 1-1 is an industrial embedded computer, and is configured to configure test parameters and test types, and receive and process test results to form a test report; the vector network analyzer 1-2 is a vector network analyzer with standard configuration and is used for carrying out signal transmission test on the device 1-10 to be tested; ARM development board 1-3 has model STM32F407IGT6 ARM chip, is used for controlling receiving channel switch 1-4 and sending channel switch 1-7 to open the test channel corresponding to test parameter and test type, and control the power supply board to output the power signal corresponding to test parameter and test type; 256 test channels are formed by 512 high-frequency optocouplers in the receiving channel switch 1-4 and the transmitting channel switch 1-7 and are used for forming a test loop between the vector network analyzer 1-2 and the device 1-10 to be tested; the power supply board 1-5 comprises 4 DC-DC power isolation modules and 5 LDO voltage regulators, wherein the LDO voltage regulators particularly adopt LM2596 chips and are used for providing power supply signals corresponding to test parameters and test types for the devices 1-10 to be tested; the digital multimeter board 1-6 comprises at least two resistor acquisition channels and a plurality of voltage acquisition channels, and is used for reading a voltage value or a resistor value obtained by testing; the base plate 1-8 is used for bearing the ARM development board 1-3, the receiving channel switch 1-4, the sending channel switch 1-7 and the signal transmission board 1-9; the signal transmission board 1-9 is used for connecting with the device 1-10 to be tested.
The embodiment can provide sufficient channels and a complete test system when the devices 1-10 to be tested are tested, and can also provide corresponding power supply, I2C (Inter IC BUS), SPI (Serial Peripheral Interface) and other communication signals, GPIO (General-Purpose Input/Output) control signals, voltage monitoring, resistance test and the like when the PCBA type DUT is tested.
In the embodiment, the vector network analyzer 1-2 outputs a test signal through the transmission channel switch 1-7; the vector network analyzer 1-2 receives the received measurement signal through the reception channel switch 1-4. After receiving the return signal, the vector network analyzer 1-2 transmits the test result generated by the return signal to the industrial personal computer 1-1.
In the embodiment, an industrial personal computer 1-1 sends test parameters and test types to an ARM development board 1-3; the ARM development board 1-3 controls the power supply board 1-5 to send corresponding power signals to the device 1-10 to be tested through the signal transmission board 1-9 according to the received test parameters and the test type. The ARM development board 1-3 also sends corresponding communication signals to the device 1-10 to be tested through the signal transmission board 1-9 according to the received test parameters and test types; and transmits the communication result to the industrial personal computer 1-1.
In this embodiment, the digital multimeter board 1-6 reads the test result of the voltage and/or the resistance through the signal transmission board 1-9 and sends the test result of the voltage and/or the resistance to the industrial personal computer 1-1.
Fig. 2 shows a flow chart of a test performed by a multi-channel vector network analyzer of the present utility model. As shown in fig. 2, first, the test parameters and test types required for the test are configured on the industrial personal computer 1-1; the industrial personal computer 1-1 issues an instruction to the ARM development board 1-3 according to the configuration; the ARM development board 1-3 controls the power supply board 1-5 to be connected with a corresponding power supply (if the test flow does not need the power supply, the test flow is skipped); the ARM development board 1-3 controls the digital multimeter board 1-6 to sequentially cut in and measure the working voltage of the device 1-10 to be tested, and if voltage abnormality occurs, the test is immediately stopped, so that the subsequent test flow is not affected.
The test flow performed in fig. 2 includes SIP (System In Package), I2S (Inter IC Sound) read-write or control test, GPIO control test, resistance test, continuity test, crosstalk test, and impedance test; the SIP, I2S read-write or control test, GPIO control test and resistance test are carried out by ARM development boards 1-3; continuity testing, crosstalk testing, and impedance testing are performed by the vector network analyzer 1-2.
The basic flow of each test is specifically described below.
SIP, I2S read-write or control test: the industrial personal computer 1-1 issues instructions to the ARM development board 1-3 according to the configuration, and the ARM development board 1-3 performs read-write test on a chip which needs to be read-written in the device 1-10 to be tested.
GPIO control test: the industrial personal computer 1-1 issues instructions to the ARM development board 1-3 according to the configuration, and the ARM development board 1-3 controls GPIO in the device to be tested 1-10 and reads in the state.
Resistance test: the industrial personal computer 1-1 issues instructions to the ARM development board 1-3 according to the configuration, and the ARM development board 1-3 controls the digital multimeter board 1-6 to sequentially cut in and measure the resistance of the device 1-10 to be tested.
Continuity testing, crosstalk testing, and impedance testing: the industrial personal computer 1-1 issues instructions to the ARM development board 1-3 according to the configuration, the ARM development board 1-3 controls the receiving channel switch 1-4 and the sending channel switch 1-7 to open a channel to be tested, and meanwhile the industrial personal computer 1-1 issues instructions to the vector network analyzer 1-2 to test the channel.
After the test is completed, the industrial personal computer 1-1 uploads and stores the test result.
Fig. 3 shows an example of a case of testing the channel-to-channel interference of a device to be tested. In fig. 3, the test channels are divided into two batches, and a test channel 1 of the vector network analyzer inputs a preset test frequency signal through an SMA external interface 3-1, and the signal is transmitted to an input end of a device 3-3 to be tested through a transmitting channel switch 3-2, is output through the device 3-3 to be tested, and a receiving channel switch 3-7 switches the signal passing through the device 3-3 to be tested to an analog load resistor 3-8 on a receiving channel switch 3-4 and is connected to an SGND (signal ground). The test channel 2 of the vector network analyzer inputs a preset test frequency signal through an SMA external interface 3-9, the signal is transmitted to the input end of the device to be tested 3-3 through a receiving channel switch 3-6, the signal is output through the device to be tested 3-3, and a transmitting channel switch 3-4 switches the signal passing through the device to be tested 3-3 to an analog load resistor 3-3 on the transmitting channel switch 3-4 and is connected to SGND (signal ground). The vector network analyzer can obtain parameters such as signal attenuation, reflection, crosstalk and the like after passing through the device to be tested by testing the two channels.
Fig. 4 shows an example of testing the signal integrity of a device under test. The test channel 1 of the vector network analyzer in fig. 4 outputs a preset test signal to the SMA interface 3-1, and the signal is sent to the input end of the device 4-3 to be tested through the sending channel switch 4-2, and is output through the device 4-3 to be tested, and the receiving channel switch 4-4 switches the signal passing through the device 4-3 to be tested to the SMA external interface 3-5; the SMA external interface 3-5 connects back to the test channel 2 of the vector network analyzer. The vector network analyzer can test whether the signal passing through the device to be tested has parameters such as attenuation, reflection, transmission condition, signal integrity and the like in a back test mode.
According to the embodiment of the utility model, the ARM control system and the vector network analyzer are combined into the multi-channel vector network analyzer testing equipment, so that 256 maximum testing channels can be provided for the device to be tested, and the power supply required by the device to be tested and the communication signals including IIC (Inter Integrated Circuit), SPI and GPIO can support more kinds of devices to be tested to test. Meanwhile, based on the characteristics of ARM (advanced RISC machines) of natural programmability and reconfigurability, the interfaces of all parts of the multichannel vector network analyzer are flexible, the compatibility is strong, and the test configuration can be adjusted according to the test requirements of various devices to be tested so as to realize the most comprehensive test of each device to be tested.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the above embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The multichannel vector network analyzer is characterized by comprising an industrial personal computer (1), a vector network analyzer (2), an ARM development board (3), a receiving channel switch (4), a power supply board (5), a digital multimeter board (6), a transmitting channel switch (7), a base board (8) and a signal transmission board (9); the industrial personal computer (1) is connected with the vector network analyzer (2), the ARM development board (3) and the digital multimeter board (6); the vector network analyzer (2) is connected with the receiving channel switch (4) and the transmitting channel switch (7); the base plate (8) is connected with the ARM development board (3), the receiving channel switch (4), the sending channel switch (7) and the signal transmission board (9); the signal transmission board (9) is connected with the ARM development board (3), the power supply board (5) and the digital multimeter board (6); the ARM development board (3) is connected with the power supply board (5);
the device to be tested (10) establishes a connection with the multichannel vector network analyzer through the signal transmission board (9).
2. The multi-channel vector network analyzer according to claim 1, wherein the ARM development board (3) is provided with an ARM chip, and the opening and closing and switching of the test channel are controlled by the ARM chip.
3. The multi-channel vector network analyzer according to claim 1, wherein the power supply board (5) comprises 4 DC-DC power isolation modules and 5 LDO voltage regulators.
4. The multi-channel vector network analyzer according to claim 1, wherein the receiving channel switch (4) and the transmitting channel switch (7) comprise 256 test channels composed of 512 high-frequency optocouplers.
5. A multi-channel vector network analyzer according to claim 1, characterized in that the digital multimeter board (6) comprises at least two resistor acquisition channels and a plurality of voltage acquisition channels.
6. A multi-channel vector network analyzer according to claim 1, characterized in that the vector network analyzer (2) outputs a test signal through a transmit channel switch (7); the vector network analyzer (2) receives the return signal through the receiving channel switch (4).
7. The multi-channel vector network analyzer according to claim 6, wherein the vector network analyzer (2) transmits the test result generated by the return signal to the industrial personal computer (1) after receiving the return signal.
8. The multi-channel vector network analyzer according to claim 1, wherein the industrial personal computer (1) sends test parameters and test types to the ARM development board (3); the ARM development board (3) controls the power supply board (5) to send corresponding power signals to the device to be tested (10) through the signal transmission board (9) according to the received test parameters and the test types.
9. The multi-channel vector network analyzer according to claim 8, wherein the ARM development board (3) further transmits corresponding communication signals to the device under test (10) through the signal transmission board (9) according to the received test parameters and test types; and transmits the communication result to the industrial personal computer (1).
10. A multi-channel vector network analyzer according to claim 1, characterized in that the digital multimeter board (6) reads the test results of the voltage and/or the resistance through the signal transmission board (9) and sends the test results of the voltage and/or the resistance to the industrial personal computer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223329670.7U CN219065630U (en) | 2022-12-12 | 2022-12-12 | Multichannel vector network analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223329670.7U CN219065630U (en) | 2022-12-12 | 2022-12-12 | Multichannel vector network analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219065630U true CN219065630U (en) | 2023-05-23 |
Family
ID=86367492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223329670.7U Active CN219065630U (en) | 2022-12-12 | 2022-12-12 | Multichannel vector network analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219065630U (en) |
-
2022
- 2022-12-12 CN CN202223329670.7U patent/CN219065630U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109709474B (en) | Radio frequency mixed signal integrated circuit test system and test method | |
| CN109302713A (en) | Height covering RF index automatic test device | |
| EP1546739B1 (en) | Rf chip testing method and system | |
| US20050258856A1 (en) | High-speed interface circuit test module, module under high-speed interface circuit test, and high-speed interface circuit test method | |
| CN201072879Y (en) | Radio frequency test system | |
| CN113491076B (en) | Radio equipment testing device | |
| CN104754093A (en) | Test device, system and method | |
| CN102565674B (en) | Automatic double-channel test circuit for radio frequency power amplifiers based on peripheral component interconnect extension for instrumentation (PXI) test equipment | |
| CN103344906A (en) | Board-level testing device of 1553 bus communication controller transceiver chip KGD | |
| CN110609183A (en) | IVI technology-based identification module and automatic test system of complete machine | |
| CN114325340A (en) | Test system and test method of radio frequency chip | |
| CN106301608A (en) | A kind of ultrashort wave Transmit-Receive Unit Universal debugging fitting device | |
| CN103728502B (en) | The method and system and wireless terminal of a kind of antenna measurement | |
| CN219065630U (en) | Multichannel vector network analyzer | |
| CN206698228U (en) | Very high frequency(VHF) transceiver hardware of automatic test system | |
| CN212258965U (en) | Automatic test system of radio frequency module | |
| CN211791529U (en) | In-band flatness comprehensive test system for radio frequency channel of broadband communication receiver | |
| CN217010875U (en) | Radio frequency test equipment and system | |
| CN114325312A (en) | Chip testing device, chip testing system and data acquisition method | |
| CN210327591U (en) | Carrier chip test system | |
| CN115065426A (en) | Production measurement and control system and method for wireless router product | |
| CN103560841A (en) | Radio frequency circuit testing system and method | |
| CN211352199U (en) | Automatic testing arrangement of multichannel signal selector of control | |
| CN110780119A (en) | Method for measuring PCB (printed Circuit Board) wiring impedance by using RF (radio frequency) test equipment | |
| CN101552645A (en) | Multipath testing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |