Radio frequency module testing device

Abstract

The utility model provides a radio frequency module testing device, which relates to the technical field of radio frequency module testing and comprises a module fixture, a control module, a power supply module, a power supply module, a power supply module, a power supply module and a power supply module, and is characterized in that a to-be-tested module is mounted in the module fixture which is communicated with an upper computer through a control module; the power supply end of the digital multimeter is connected with the power supply, the current output end of the digital multimeter is connected with the current input end of the module jig, and the digital multimeter and the power supply communicate with the upper computer; a jig side radio frequency interface of the radio frequency switch is connected with a radio frequency interface of the module jig, a radio frequency acquisition interface of the radio frequency switch is connected with a signal source, a radio frequency emission interface of the radio frequency switch is connected with a frequency spectrograph, and the radio frequency switch, the frequency spectrograph and the signal source communicate with an upper computer. The radio frequency performance testing system has the beneficial effects that various items can be tested, the testing methods are diversified, the testing efficiency is high, full-automatic testing is achieved, manual testing is not needed, and efficient, comprehensive and automatic radio frequency performance testing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency module testing, in particular to a radio frequency module testing device. Background Art

[0002] In the field of wireless communication, the performance of radio frequency chips directly determines the communication quality and stability of devices. Radio frequency performance includes key indicators such as signal transmission power, reception sensitivity, frequency stability, and phase noise. These indicators are closely related to circuit board layout and trace design. Due to the complexity of radio frequency signals and their high sensitivity to the external environment, the design and production process of radio frequency chips require extremely high precision and meticulousness.

[0003] To improve production efficiency and ensure product quality, radio frequency chips are often produced in the form of mass production modules. Such modules integrate key components such as radio frequency chips, filters, and power amplifiers, and through optimized circuit board layout and trace design, ensure the stability and efficiency of radio frequency signals during transmission. The production method of mass production modules not only simplifies the production process, but also improves the reliability and consistency of products, meeting the needs of large-scale market applications.

[0004] Although the production method of radio frequency modules has achieved remarkable results in improving production efficiency and product quality, there are still many challenges in the testing link of radio frequency performance. At present, most tests of radio frequency modules adopt communication testing methods, that is, by sending and receiving signals to determine whether the module is qualified. Although this method can initially judge whether the communication function of the module is normal, it cannot comprehensively and deeply evaluate all indicators of radio frequency performance.

[0005] In application scenarios with high requirements, such as aerospace, medical electronics and other fields, the requirements for radio frequency performance are extremely strict. It often relies on manual single tests. This testing method is not only inefficient, but also easily affected by human factors, resulting in the reliability and consistency of test results being difficult to guarantee. In addition, with the continuous expansion of the application fields of radio frequency modules and the acceleration of product updates, the demand for radio frequency performance testing is also increasing day by day, and traditional testing methods are difficult to meet market demands.

[0006] In summary, the existing technology has problems such as single testing method, low testing efficiency, and reliance on manual testing in radio frequency module testing. To solve these problems, it is necessary to develop a more efficient, comprehensive, and automated radio frequency performance testing solution to meet the high requirements for radio frequency performance in different application scenarios. Summary of the Utility Model

[0007] Aiming at the problems existing in the prior art, the utility model provides a radio frequency module testing device, including:

[0008] Module fixture, with a module to be tested installed therein, and the module fixture communicates with a host computer through a control module;

[0009] Digital multimeter, the power supply terminal of the digital multimeter is connected to a power supply, the current output terminal of the digital multimeter is connected to the current input terminal of the module fixture, and the digital multimeter and the power supply communicate with the host computer;

[0010] RF switch, the fixture-side RF interface of the RF switch is connected to the RF interface of the module fixture, the RF acquisition interface of the RF switch is connected to a signal source, the RF transmission interface of the RF switch is connected to a spectrum analyzer, and the RF switch, the spectrum analyzer and the signal source communicate with the host computer.

[0011] Preferably, the control module includes:

[0012] Control chip, the eighth pin, ninth pin, tenth pin, eleventh pin and twelfth pin of the control chip are sequentially connected to the first pin, second pin, third pin, fourth pin and fifth pin of a communication connector, and the communication connector is connected to the module fixture;

[0013] Communication chip, the sixth pin of the communication chip is connected to the twentieth pin of the control chip, and the seventh pin of the communication chip is connected to the twenty-first pin of the control chip; the first pin of the communication chip is connected to the third pin of a USB interface, the second pin of the communication chip is connected to the second pin of the USB interface, the third pin of the communication chip is grounded, and the USB interface is connected to the host computer;

[0014] Debug interface, the second pin and third pin of the debug interface are correspondingly connected to the twenty-fourth pin and twenty-third pin of the control chip, and the debug interface is connected to the module fixture.

[0015] Preferably, the control module further includes a communication indication circuit, and the communication indication circuit includes:

[0016] First light-emitting diode, the negative electrode of the first light-emitting diode is connected to the twentieth pin of the control chip, the positive electrode of the first light-emitting diode is connected to one end of a first resistor, and the other end of the first resistor is connected to the power supply;

[0017] Second light-emitting diode, the negative electrode of the second light-emitting diode is connected to the nineteenth pin of the control chip, the positive electrode of the second light-emitting diode is connected to one end of a second resistor, and the other end of the second resistor is connected to the power supply.

[0018] Preferably, the control module further includes a linear voltage regulation circuit, and the linear voltage regulation circuit includes:

[0019] A linear voltage regulator, with a first capacitor connected in series between the first pin and the second pin of the linear voltage regulator. One end of the first capacitor is grounded, and the other end of the first capacitor is respectively connected to the power supply, the other end of the first resistor, the other end of the second resistor, the first pin of the debugging interface, the seventeenth pin of the control chip, and the seventh pin of the control chip;

[0020] The reset pin of the control chip is connected to one end of a second capacitor and one end of a third resistor. The other end of the second resistor is connected to the other end of the first capacitor, and the other end of the second capacitor is grounded.

[0021] Preferably, the RF switch includes:

[0022] An RF control chip, where the eighteenth pin and the nineteenth pin of the RF control chip are connected to the switching control end of an RF switching circuit. Multiple RF board end sockets of the RF switching circuit are respectively connected to the RF interface of the module fixture, the signal source, and the spectrum analyzer;

[0023] A host computer interface, where the third pin of the host computer interface is connected to the thirtieth pin of the RF control chip, the fourth pin of the host computer interface is connected to the fourteenth pin of the RF control chip, the fifth pin of the host computer interface is connected to the thirteenth pin of the RF control chip, the sixth pin of the host computer interface is connected to the twelfth pin of the RF control chip, the seventh pin of the host computer interface is connected to the eleventh pin of the RF control chip, the eighth pin of the host computer interface is connected to the twenty-sixth pin of the RF control chip, the ninth pin of the host computer interface is connected to the twenty-seventh pin of the RF control chip, the tenth pin of the host computer interface is connected to the twenty-eighth pin of the RF control chip, the eleventh pin of the host computer interface is connected to the twenty-ninth pin of the RF control chip, the twelfth pin of the host computer interface is connected to the twenty-fifth pin of the RF control chip, and the host computer interface is connected to the host computer;

[0024] A microcontroller unit debugging interface, where the first pin, the second pin, and the third pin of the microcontroller unit debugging interface are sequentially connected to the thirty-sixth pin, the thirty-fourth pin, and the thirty-seventh pin of the RF control chip, and the microcontroller unit debugging interface is connected to the host computer;

[0025] A USB connector, where the second pin and the third pin of the USB connector are respectively connected to the first pin and the second pin of a USB conversion chip, and the seventh pin and the eighth pin of the USB conversion chip are respectively connected to the thirty-third pin and the thirty-second pin of the RF control chip.

[0026] Preferably, the RF switch further includes a status indication circuit, and the status indication circuit includes:

[0027] A third light-emitting diode, the negative electrode of the third light-emitting diode is connected to the thirty-third pin of the RF control chip, and the positive electrode of the third light-emitting diode is connected to the power supply through a fourth resistor;

[0028] A fourth light-emitting diode, the negative electrode of the fourth light-emitting diode is connected to the thirty-second pin of the RF control chip, and the positive electrode of the fourth light-emitting diode is connected to the power supply through a fifth resistor;

[0029] A fifth light-emitting diode, the negative electrode of the fifth light-emitting diode is grounded, and the positive electrode of the fifth light-emitting diode is connected to the power supply through a sixth resistor;

[0030] A sixth light-emitting diode, the negative electrode of the sixth light-emitting diode is grounded, and the positive electrode of the sixth light-emitting diode is connected to the forty-fifth pin of the RF control chip through a seventh resistor;

[0031] A seventh light-emitting diode, the negative electrode of the seventh light-emitting diode is grounded, and the positive electrode of the seventh light-emitting diode is connected to the forty-sixth pin of the RF control chip through an eighth resistor.

[0032] Preferably, the RF switch further includes a reset circuit, and the reset circuit includes:

[0033] A touch switch, one end of the touch switch is connected to the seventh pin of the RF control chip, one end of a ninth resistor, and one end of a third capacitor, the other end of the touch switch is grounded, the other end of the ninth resistor is connected to the ninth pin of the RF control chip, and the other end of the third capacitor is grounded.

[0034] Preferably, the RF switching circuit includes:

[0035] A switching control chip, the fifth pin of the switching control chip is connected to the nineteenth pin of the RF control chip, the sixth pin of the switching control chip is connected to the eighteenth pin of the RF control chip, the first pin, the second pin, the eighth pin, and the ninth pin of the switching control chip are respectively connected to one of the RF board sockets, and each of the RF board sockets is respectively connected to the RF interface of the module fixture, the signal source, and the spectrum analyzer.

[0036] Preferably, it further includes a switch, the spectrum analyzer and the signal source are respectively connected to the switch, and the switch communicates with the host computer.

[0037] The above technical solution has the following advantages or beneficial effects: By configuring a preset test program in the host computer, and then performing power consumption testing on the module to be tested through the control module, and switching the connection relationship between the module to be tested, the spectrum analyzer, and the signal source through the RF switch to complete power testing and packet reception testing respectively, automated testing can be achieved. Multiple items can be tested, the testing methods are diverse, the testing efficiency is high, and full-automatic testing is realized without relying on manual testing, achieving efficient, comprehensive, and automated RF performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 In a preferred embodiment of the present invention, it is a schematic structural diagram of a radio frequency module testing device;

[0039] Figure 2 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the control module;

[0040] Figure 3 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the communication chip;

[0041] Figure 4 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the communication indication circuit;

[0042] Figure 5 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the linear voltage regulator circuit;

[0043] Figure 6 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the radio frequency control chip;

[0044] Figure 7 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the radio frequency switching circuit;

[0045] Figure 8 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the host computer interface;

[0046] Figure 9 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the microcontroller unit debugging interface;

[0047] Figure 10 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the USB connector and the USB conversion chip;

[0048] Figure 11 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the status indication circuit;

[0049] Figure 12 In a preferred embodiment of the present invention, it is a schematic circuit diagram of the reset circuit. Specific Embodiment

[0050] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The present utility model is not limited to this embodiment, and other embodiments may also fall within the scope of the present utility model as long as they conform to the gist of the present utility model.

[0051] In a preferred embodiment of the present utility model, in view of the above problems existing in the prior art, a radio frequency module testing device is provided, including:

[0052] A module fixture 1, in which a module to be tested is installed, and the module fixture 1 communicates with a host computer 3 through a control module 2;

[0053] A digital multimeter 4, the power supply terminal of the digital multimeter 4 is connected to a power supply 5, the current output terminal of the digital multimeter 4 is connected to the current input terminal of the module fixture 1, and the digital multimeter 4 and the power supply 5 communicate with the host computer 3;

[0054] A radio frequency switch 6, the fixture-side radio frequency interface of the radio frequency switch 6 is connected to the radio frequency interface of the module fixture 1, the radio frequency acquisition interface of the radio frequency switch 6 is connected to a signal source 7, the radio frequency transmission interface of the radio frequency switch 6 is connected to a spectrum analyzer 8, and the radio frequency switch 6, the spectrum analyzer 8 and the signal source 7 communicate with the host computer 3.

[0055] Specifically, a radio frequency module testing device provided in this embodiment can realize automatic testing of a radio frequency switch to be tested and measure detailed data of various indexes of the module.

[0056] An optional usage method of this radio frequency module testing device is:

[0057] First, install the module to be tested in the module fixture 1;

[0058] Subsequently, configure the test mode through the host computer 3, and configure the communication addresses of the control module 2, the radio frequency switch 6, the spectrum analyzer 8 and the signal source 7 for communication connection. Then record the module serial number of the current module to be tested and determine the test frequency;

[0059] Next, the host computer 3 sets the data multimeter 4 to the DC current test mode, sets the voltage of the power supply 5 and powers on, and performs power consumption tests on the module to be tested in multiple modes through the control module 2;

[0060] Then, perform radio frequency index tests. First, control the radio frequency switch 6 to switch to the connection between the module to be tested and the spectrum analyzer 8, and test the output power of different power levels at different frequency points of the module to be tested. After the power test is completed, switch the radio frequency switch 6 to communicate the signal source 7 with the module to be tested. The signal source 7 sends a modulation signal, and the module to be tested receives the modulation signal. After the transmission is completed, the host computer 3 counts the packet reception rate of the module to be tested.

[0061] During the test, the host computer will display the test results in a TextBox and save all test data in a csv file after the test is completed.

[0062] It can be seen that based on this radio frequency module test device, it is possible to realize the configuration of a preset test program in the host computer 3, and then perform power consumption tests on the module to be tested through the control module 2. By switching the connection relationship between the module to be tested, the spectrum analyzer 8, and the signal source 7 through the radio frequency switch 6, power tests and packet reception tests are respectively completed, realizing automated testing. It can test a variety of items, with diverse test methods, high test efficiency, and full-automatic testing, without relying on manual testing, achieving efficient, comprehensive, and automated radio frequency performance testing.

[0063] In a preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, the control module 2 includes:

[0064] A control chip U1. The eighth pin IRQ, ninth pin NSS, tenth pin SCK, eleventh pin MISO, and twelfth pin MOSI of the control chip U1 are sequentially connected to the first pin, second pin, third pin, fourth pin, and fifth pin of the communication connector J1, and the communication connector J1 is connected to the module fixture.

[0065] A communication chip U2. The sixth pin URAT_RX of the communication chip is connected to the twentieth pin of the control chip U1, and the seventh pin URAT_TX of the communication chip is connected to the twenty-first pin of the control chip U1. The first pin DP of the communication chip U2 is connected to the third pin of the USB interface J2, the second pin DM of the communication chip U2 is connected to the second pin of the USB interface J2, the third pin of the communication chip U2 is grounded to GND, and the USB interface is connected to the host computer.

[0066] A debugging interface J3. The second pin SWCLK and the third pin SWDIO of the debugging interface J3 are respectively connected to the twenty-fourth pin and the twenty-third pin of the control chip U1, and the debugging interface J3 is connected to the module fixture 1.

[0067] Specifically, as Figure 2 and Figure 3As shown in the figure, the control module includes a communication chip U2, a control chip U1, and a debugging interface J3. The communication chip U2 is used to establish communication between the control chip U1 and the host computer 3, and the control chip U1 is used to receive instructions from the host computer 3 to control the working state of the module under test.

[0068] Specifically, in this embodiment, the pins are respectively labeled as IRQ, NSS, SCK, MISO, and MOSI, which are common pins used to implement communication functions with the module under test in the module fixture 1. The IRQ pin is an interrupt request pin used to receive interrupt request signals from external devices; the NSS pin is a signal line pin used to select the slave device to communicate with; the SCK pin is the clock signal pin in the SPI interface generated by the master device; the MISO pin is the host input / slave output pin in the SPI interface; the MOSI pin is the host output / slave input pin in the SPI interface.

[0069] The debugging interface J3 is mainly used to debug the module under test in the module fixture 1. The SWCLK pin and the SWDIO pin are interface pins in the microcontroller used for debugging and programming, especially the two core pins of the commonly used SWD (Serial Wire Debug) interface in microcontrollers based on the ARM Cortex-M kernel such as STM32.

[0070] In a preferred embodiment of the present invention, as Figure 4 shown, the control module 2 further includes a communication indication circuit, and the communication indication circuit includes:

[0071] A first light-emitting diode D1, the negative electrode of the first light-emitting diode D1 is connected to the twentieth pin URAT_RX of the control chip U1, the positive electrode of the first light-emitting diode D1 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the power supply VCC_3V3;

[0072] A second light-emitting diode D2, the negative electrode of the second light-emitting diode D2 is connected to the nineteenth pin URAT_TX of the control chip U1, the positive electrode of the second light-emitting diode D2 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the power supply VCC_3V3.

[0073] Specifically, in this embodiment, the states of receiving and transmitting signals between the control chip U1 and the host computer 3 are respectively indicated by the brightness and darkness of the two light-emitting diodes in the communication indication circuit, which is convenient for observing whether the communication between the control chip U1 and the host computer 3 is normal.

[0074] In a preferred embodiment of the present invention, as Figure 5 shown, the control module further includes a linear voltage regulator circuit, and the linear voltage regulator circuit includes:

[0075] Linear voltage regulator LDO. A first capacitor C1 is connected in series between the first pin and the second pin of the linear voltage regulator LDO. One end of the first capacitor C1 is grounded, and the other end of the first capacitor C1 is respectively connected to the power supply VCC_3V3, the other end of the first resistor R1, the other end of the second resistor R2, the first pin VCC_3V3 of the debugging interface J3, the seventeenth pin VCC_3V3 of the control chip U1, and the seventh pin VCC_3V3 of the control chip U1;

[0076] The reset pin of the control chip U1 is connected to one end of a second capacitor C2 and one end of a third resistor R3. The other end of the second resistor R2 is connected to the other end of the first capacitor C1, and the other end of the second capacitor C2 is grounded.

[0077] Specifically, it further includes two power interfaces. The third pin VBUS of the linear voltage regulator LDO is connected to the power supply 5 through the first power interface J4, and the second pin VCC_3V3 of the linear voltage regulator LDO is connected to the power supply 5 through the second power interface J5. The linear voltage regulator LDO stabilizes the current output by the power supply 5 to provide stable power supply for other control modules 2, the module fixture 1 to-be-tested module, the RF switch 6, etc.

[0078] In a preferred embodiment of the present utility model, as Figure 6 shown, the RF switch 6 includes:

[0079] An RF control chip U3. The eighteenth pin V2 and the nineteenth pin V1 of the RF control chip U3 are connected to the switching control end of the RF switching circuit. Multiple RF board end seats of the RF switching circuit are respectively connected to the RF interface of the module fixture 1, the signal source, and the spectrum analyzer;

[0080] In a preferred embodiment of the present utility model, as Figure 7 shown, the RF switching circuit includes:

[0081] A switching control chip U4. The fifth pin V1 of the switching control chip U4 is connected to the nineteenth pin V1 of the RF control chip U3, the sixth pin V2 of the switching control chip U4 is connected to the eighteenth pin V2 of the RF control chip U3. The first pin, the second pin, the eighth pin, and the ninth pin of the switching control chip U4 are respectively connected to an RF board end seat J6. Each RF board end seat J6 is respectively connected to the RF interface of the module fixture 1, the signal source, and the spectrum analyzer.

[0082] As Figure 8As shown, the upper computer interface is J7. The third pin PA9 of the upper computer interface J7 is connected to the thirtieth pin of the radio frequency control chip U4. The fourth pin CSN1 of the upper computer interface J7 is connected to the fourteenth pin of the radio frequency control chip U4. The fifth pin SCK1 of the upper computer interface J7 is connected to the thirteenth pin of the radio frequency control chip U4. The sixth pin MOSI1 of the upper computer interface J7 is connected to the twelfth pin of the radio frequency control chip U4. The seventh pin of the upper computer interface J7 is connected to the eleventh pin MIS01 of the radio frequency control chip U4. The eighth pin IRQ of the upper computer interface J7 is connected to the twenty-sixth pin of the radio frequency control chip U4. The ninth pin PB14 of the upper computer interface J7 is connected to the twenty-seventh pin of the radio frequency control chip U4. The tenth pin PB15 of the upper computer interface J7 is connected to the twenty-eighth pin of the radio frequency control chip U4. The eleventh pin PA8 of the upper computer interface J7 is connected to the twenty-ninth pin of the radio frequency control chip U4. The twelfth pin PB12 of the upper computer interface J7 is connected to the twenty-fifth pin of the radio frequency control chip U4. The upper computer interface J7 is connected to the upper computer;

[0083] Specifically, in this embodiment, communication is established between the radio frequency switch 6 and the upper computer 3 through the upper computer interface J7. The switching control chip U4 in the radio frequency switching circuit is controlled by the radio frequency control chip U3 to switch the conduction states of the respective radio frequency board end sockets J6, so as to realize switching the connection relationships between the module to be tested, the spectrum analyzer 8, and the signal source 7 through the radio frequency switch 6 to complete power testing and packet receiving testing respectively, and realize automated testing.

[0084] The microcontroller unit debugging interface is J8. The first pin, the second pin, and the third pin of the microcontroller unit debugging interface J8 are sequentially connected to the thirty-sixth pin VCC_MCU, the thirty-fourth pin SWDIO, and the thirty-seventh pin SWCLK of the radio frequency control chip. The microcontroller unit debugging interface J8 is connected to the upper computer 3;

[0085] Specifically, in this embodiment, the upper computer 3 debugs the radio frequency switch 6 through the microcontroller unit debugging interface J8.

[0086] As Figure 10 shown, it also includes a USB connector J9. The second pin and the third pin of the USB connector J9 are respectively connected to the first pin DM and the second pin DP of the USB conversion chip U5. The seventh pin and the eighth pin of the USB conversion chip U5 are respectively connected to the thirty-third pin URAT_TX and the thirty-second pin URAT_RX of the radio frequency control chip U3.

[0087] Specifically, in this embodiment, the radio frequency control chip U3 establishes communication and exchanges data with the upper computer 3 through the USB conversion chip U5 and the USB connector J9.

[0088] In a preferred embodiment of the present utility model, the RF switch 6 further includes a status indication circuit, such as Figure 11 shown, the status indication circuit includes:

[0089] A third light-emitting diode D3, the negative electrode of the third light-emitting diode D3 is connected to the thirty-third pin URAT_TX of the RF control chip U3, and the positive electrode of the third light-emitting diode D3 is connected to the power supply VCC_3V3 through a fourth resistor R4;

[0090] A fourth light-emitting diode D4, the negative electrode of the fourth light-emitting diode D4 is connected to the thirty-second pin URAT_RX of the RF control chip U3, and the positive electrode of the fourth light-emitting diode D4 is connected to the power supply VCC_3V3 through a fifth resistor R5;

[0091] A fifth light-emitting diode D5, the negative electrode of the fifth light-emitting diode D5 is grounded, and the positive electrode of the fifth light-emitting diode D5 is connected to the power supply VCC_3V3 through a sixth resistor R6;

[0092] A sixth light-emitting diode D6, the negative electrode of the sixth light-emitting diode D is grounded, and the positive electrode of the sixth light-emitting diode D6 is connected to the forty-fifth pin LED1 of the RF control chip U3 through a seventh resistor R7;

[0093] A seventh light-emitting diode D7, the negative electrode of the seventh light-emitting diode D7 is grounded, and the positive electrode of the seventh light-emitting diode D7 is connected to the forty-sixth pin LED2 of the RF control chip U3 through an eighth resistor R8.

[0094] Specifically, in this embodiment, the communication status between the RF switch 6 and the host computer 3 is identified by the bright and dark states of the light-emitting diodes in the status indication circuit, which is convenient for observing whether the communication between the RF switch 6 and the host computer 3 is normal.

[0095] In a preferred embodiment of the present utility model, the RF switch further includes a reset circuit. The reset circuit includes:

[0096] A touch switch SW1, one end of the touch switch SW1 is connected to the seventh pin RESET of the RF control chip U3, one end of a ninth resistor R9, and one end of a third capacitor C3, the other end of the touch switch SW1 is grounded, the other end of the seventh resistor R7 is connected to the ninth pin VCC_MCU of the RF control chip U3, and the other end of the third capacitor C3 is grounded.

[0097] Specifically, in this embodiment, pressing the touch switch SW1 can achieve the overall reset of the RF switch 6.

[0098] In a preferred embodiment of the present utility model, it further includes a switch 9. The spectrum analyzer 8 and the signal source 7 are respectively connected to the switch 9, and the switch 9 communicates with the host computer 3.

[0099] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the content of this specification and the drawings should be included within the protection scope of the present utility model.

Claims

1. A radio frequency module testing device, characterized in that: include: A module fixture, in which a module to be tested is installed, and the module fixture communicates with a host computer through a control module; A digital multimeter, wherein a power supply terminal of the digital multimeter is connected to a power supply, a current output terminal of the digital multimeter is connected to a current input terminal of the module fixture, and the digital multimeter and the power supply communicate with the host computer; An RF switch, wherein the RF interface of the RF switch on the fixture side is connected to the RF interface of the module fixture, the RF acquisition interface of the RF switch is connected to the signal source, the RF transmission interface of the RF switch is connected to the spectrum analyzer, and the RF switch, the spectrum analyzer and the signal source communicate with the host computer.

2. The RF module testing device according to claim 1, characterized in that: The control module comprises: A control chip, wherein the eighth pin, the ninth pin, the tenth pin, the eleventh pin and the twelfth pin of the control chip correspond to the first pin, the second pin, the third pin, the fourth pin and the fifth pin of the communication connector in sequence, and the communication connector is connected to the module fixture; A communication chip, wherein the sixth pin of the communication chip is connected to the 20th pin of the control chip, and the seventh pin of the communication chip is connected to the 21st pin of the control chip; the first pin of the communication chip is connected to the third pin of the USB interface, the second pin of the communication chip is connected to the second pin of the USB interface, the third pin of the communication chip is grounded, and the USB interface is connected to the host computer; A debugging interface, wherein the second pin and the third pin of the debugging interface are correspondingly connected to the twenty-fourth pin and the twenty-third pin of the control chip, and the debugging interface is connected to the module fixture.

3. The RF module testing device according to claim 2, characterized in that: The control module further includes a communication indication circuit, and the communication indication circuit includes: a first light-emitting diode, wherein a cathode of the first light-emitting diode is connected to the twentieth pin of the control chip, an anode of the first light-emitting diode is connected to one end of a first resistor, and the other end of the first resistor is connected to the power supply; A second light emitting diode, wherein the cathode of the second light emitting diode is connected to the nineteenth pin of the control chip, the anode of the second light emitting diode is connected to one end of a second resistor, and the other end of the second resistor is connected to the power supply.

4. The RF module testing device according to claim 3, characterized in that: The control module further includes a linear voltage stabilization circuit, and the linear voltage stabilization circuit includes: A linear regulator, wherein a first capacitor is connected in series between a first pin and a second pin of the linear regulator, one end of the first capacitor is grounded, and the other end of the first capacitor is respectively connected to the power supply, the other end of the first resistor, the other end of the second resistor, the first pin of the debugging interface, the seventeenth pin of the control chip, and the seventh pin of the control chip; The reset pin of the control chip is connected to one end of the second capacitor and one end of the third resistor, the other end of the second resistor is connected to the other end of the first capacitor, and the other end of the second capacitor is grounded.

5. The RF module testing device according to claim 1, characterized in that: The radio frequency switch comprises: A radio frequency control chip, wherein the eighteenth pin and the nineteenth pin of the radio frequency control chip are connected to the switching control end of the radio frequency switching circuit, and the multiple radio frequency board terminal sockets of the radio frequency switching circuit are respectively connected to the radio frequency interface of the module fixture, the signal source and the spectrum analyzer; A host computer interface, wherein the third pin of the host computer interface is connected to the 30th pin of the RF control chip, the fourth pin of the host computer interface is connected to the 14th pin of the RF control chip, the fifth pin of the host computer interface is connected to the 13th pin of the RF control chip, the sixth pin of the host computer interface is connected to the 12th pin of the RF control chip, the seventh pin of the host computer interface is connected to the 11th pin of the RF control chip, the eighth pin of the host computer interface is connected to the 26th pin of the RF control chip, the ninth pin of the host computer interface is connected to the 27th pin of the RF control chip, the tenth pin of the host computer interface is connected to the 28th pin of the RF control chip, the 11th pin of the host computer interface is connected to the 29th pin of the RF control chip, the 12th pin of the host computer interface is connected to the 25th pin of the RF control chip, and the host computer interface is connected to the host computer; A micro-control unit debugging interface, wherein the first pin, the second pin and the third pin of the micro-control unit debugging interface are connected to the thirty-sixth pin, the thirty-fourth pin and the thirty-seventh pin of the radio frequency control chip in sequence, and the micro-control unit debugging interface is connected to the host computer; A USB connector, wherein the second pin and the third pin of the USB connector correspond to the first pin and the second pin of the USB conversion chip respectively, and the seventh pin and the eighth pin of the USB conversion chip correspond to the thirty-third pin and the thirty-second pin of the RF control chip respectively.

6. The RF module testing device according to claim 5, characterized in that: The radio frequency switch further includes a state indication circuit, and the state indication circuit includes: a third light-emitting diode, wherein a cathode of the third light-emitting diode is connected to the thirty-third pin of the radio frequency control chip, and an anode of the third light-emitting diode is connected to the power supply via a fourth resistor; a fourth light-emitting diode, wherein a cathode of the fourth light-emitting diode is connected to the thirty-second pin of the radio frequency control chip, and an anode of the fourth light-emitting diode is connected to the power supply via a fifth resistor; a fifth light emitting diode, wherein a cathode of the fifth light emitting diode is grounded, and an anode of the fifth light emitting diode is connected to the power supply via a sixth resistor; a sixth light-emitting diode, wherein a cathode of the sixth light-emitting diode is grounded, and an anode of the sixth light-emitting diode is connected to a forty-fifth pin of the radio frequency control chip via a seventh resistor; A seventh light emitting diode, wherein the cathode of the seventh light emitting diode is grounded, and the anode of the seventh light emitting diode is connected to the forty-sixth pin of the radio frequency control chip via an eighth resistor.

7. The RF module testing device according to claim 5, characterized in that: The radio frequency switch further includes a reset circuit, and the reset circuit includes: A touch switch, one end of the touch switch is connected to the seventh pin of the RF control chip, one end of the ninth resistor and one end of the third capacitor, the other end of the touch switch is grounded, the other end of the ninth resistor is connected to the ninth pin of the RF control chip, and the other end of the third capacitor is grounded.

8. The RF module testing device according to claim 5, characterized in that: The radio frequency switching circuit comprises: A switching control chip, wherein the fifth pin of the switching control chip is connected to the nineteenth pin of the RF control chip, the sixth pin of the switching control chip is connected to the eighteenth pin of the RF control chip, the first pin, the second pin, the eighth pin and the ninth pin of the switching control chip are respectively connected to an RF board terminal socket, and each RF board terminal socket is respectively connected to the RF interface of the module fixture, the signal source and the spectrum analyzer.

9. The RF module testing device according to claim 1, characterized in that: It also includes a switch, the spectrum analyzer and the signal source are respectively connected to the switch, and the switch communicates with the host computer.

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