Radio frequency chip test experiment device

Abstract

The utility model discloses a radio frequency chip test experiment device, and relates to the field of radio frequency chip test experiments. Comprising a first signal input end, a third change-over switch, a radio frequency transmitting chip circuit, a radio frequency transmitting end, a radio frequency receiving chip circuit, a radio frequency receiving end, a fourth change-over switch, a second output test end, a first change-over switch, a first digital source meter, a second change-over switch, a second digital source meter and a liquid crystal control circuit. The radio frequency chip test experimental device can optimize the test process, reduce the test time and labor cost, improve the test accuracy and reliability, accurately control the transmission and reception of test signals by using a digital source meter, and adopt an advanced signal processing algorithm, so that the test accuracy and reliability are improved, and the test efficiency is improved. According to the radio frequency chip testing device, the problem of signal interference during chip testing can be effectively reduced, multiple functions needed by radio frequency chip testing are integrated into one compact device through integrated design, and testing convenience and flexibility are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency chip testing experiments, and in particular to a radio frequency chip testing experimental device. Background Technology

[0002] Radio frequency (RF) chips are integrated circuits specifically designed for processing radio frequency (RF) signals, playing a crucial role in wireless communication, radar, radio, and other RF devices. RF chip testing is a vital step in ensuring stable performance and proper operation, encompassing multiple aspects, including circuit power consumption testing, data transmission and reception testing, and spectrum characteristic experiments. Circuit power consumption testing is a key indicator of RF chip energy consumption, directly determining its performance and lifespan. This testing reveals the chip's power consumption under different operating conditions, providing a basis for optimizing chip design and improving energy efficiency. Data transmission and reception testing verifies the RF chip's communication functions. By sending and receiving data, it checks whether the chip's modulation / demodulation, encoding / decoding, and other communication functions meet design requirements. Spectrum characteristic experiments analyze the RF chip's spectral characteristics, including frequency response, harmonic components, and phase noise. These characteristics are crucial for evaluating the performance and stability of RF chips.

[0003] Comprehensive testing can verify whether an RF chip meets design requirements in various aspects, such as transmit power, receive sensitivity, and spectral characteristics, ensuring the chip's performance and quality. However, existing RF chip testing equipment and methods often suffer from low testing efficiency, high costs, and signal interference. This interference is particularly severe when testing multiple chips simultaneously, affecting the accuracy and reliability of the tests.

[0004] With the rapid development of wireless communication technology, radio frequency (RF) chips, as core components of wireless communication devices, are crucial to the stability and reliability of the entire system. However, traditional RF chip testing methods suffer from low testing efficiency, insufficient testing accuracy, and limited testing range, making it difficult to meet the high performance requirements of modern wireless communication systems.

[0005] Therefore, it is necessary to propose an experimental setup for testing radio frequency chips to solve the above problems. Utility Model Content

[0006] The main purpose of this invention is to provide an experimental device for testing radio frequency chips, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An experimental apparatus for testing radio frequency (RF) chips includes a first signal input terminal, a third switch, an RF transmitter chip circuit, an RF transmitter, an RF receiver chip circuit, an RF receiver, a fourth switch, a second output test terminal, a first switch, a first digital source meter, a second switch, a second digital source meter, and a liquid crystal control circuit. The first signal input terminal is electrically connected to the third switch. The third switch is electrically connected to the RF transmitter chip circuit. The RF transmitter chip circuit is electrically connected to the RF transmitter and the first switch. The first switch is electrically connected to the first digital source meter and the second switch. The second switch is electrically connected to the second digital source meter and the RF receiver chip circuit. The RF receiver chip circuit is electrically connected to the RF receiver and the fourth switch. The fourth switch is electrically connected to the second output test terminal. The third and fourth switches are electrically connected to the liquid crystal control circuit, and the liquid crystal control circuit is electrically connected to the first and second switches.

[0009] Preferably, the first signal input terminal includes a signal generator input terminal for connecting to the radio frequency signal input to the radio frequency transmitter chip circuit; controlled by a third switch, the liquid crystal control circuit includes a liquid crystal display screen, the liquid crystal display screen includes a signal switch area, the signal switch area includes an on and an off state, when the on state of the signal switch area is clicked on the liquid crystal display screen of the liquid crystal control circuit, the DIN pin of the WL4456 chip of the radio frequency transmitter chip circuit can be connected to the signal generator; the DO pin of the WL700 chip can be connected to an oscilloscope.

[0010] Preferably, the third switching switch is used to control the connection between the first signal input terminal and the radio frequency transmitter chip circuit, and is controlled by the liquid crystal control circuit; the radio frequency transmitter chip circuit includes a radio frequency transmitter chip and its peripheral circuits, which are used to convert the input signal into a radio frequency signal and transmit it, and the main chip is WL4456; during the test, the performance of the transmitter chip can be evaluated by adjusting the parameters of the transmitter chip and observing its output.

[0011] Preferably, the radio frequency (RF) transmitter is used to transmit the RF signal converted by the RF transmitter chip circuit; the RF receiver chip circuit includes an RF receiver chip and its peripheral circuits, used to receive the RF signal and convert it into a processable baseband signal. During the test, the performance of the receiver chip can be evaluated by inputting RF signals with different characteristics into the receiver chip and observing its output response.

[0012] Preferably, the RF receiver is used to receive RF signals from the RF transmitter and send the RF signals to the receiver pin of the RF receiver chip circuit; the fourth switch is used to control the connection between the RF receiver chip circuit and the second output test terminal, and is controlled by the liquid crystal control circuit.

[0013] Preferably, the second output test terminal includes an oscilloscope connection terminal for outputting the processing results of the RF transmitting chip and the RF receiving chip, for further analysis of the signal, and for analyzing and evaluating the performance of the RF chip; the first switching switch is used to control the connection between the RF receiving chip circuit and the second digital source meter, and is controlled by the liquid crystal control circuit.

[0014] Preferably, the first digital source meter is connected to the RF transmitter chip circuit via a first switching switch to provide a precise and controllable power input to the RF transmitter chip circuit; the second switching switch is used to control the connection between the RF receiver chip circuit and the second digital source meter, and is controlled by the liquid crystal control circuit; the second digital source meter is connected to the RF receiver chip circuit via a second switching switch to provide a precise and controllable power input to the RF receiver chip circuit.

[0015] Preferably, the liquid crystal control circuit includes a liquid crystal display screen and a control command conversion circuit;

[0016] The LCD screen displays the control interface of the testing device, allowing users to switch between different connection methods by touching different buttons. Specifically, this includes:

[0017] Transmitter chip power supply: Pressing Connect will supply power from the first digital source meter to the WL4456 chip of the RF transmitter chip circuit; pressing Disconnect will disconnect the power supply from the first digital source meter to the WL4456 chip of the RF transmitter chip circuit.

[0018] Signal switch: Press to turn on, which connects the DIN pin of the WL4456 chip in the RF transmitter chip circuit to the signal generator, and the DO pin of the WL700 chip in the RF receiver chip circuit to the oscilloscope. Press to turn off, which disconnects the DIN pin of the WL4456 chip in the RF transmitter chip circuit from the signal generator, and the DO pin of the WL700 chip in the RF receiver chip circuit from the oscilloscope.

[0019] Power supply to the receiver chip: Pressing the Connect button will supply power from the second digital source meter to the WL700 chip in the RF receiver chip circuit; pressing the Disconnect button will disconnect the power supply from the WL700 chip in the second digital source meter of the RF receiver chip circuit.

[0020] Control signal: Press Connect, the WL700 chip of the RF receiver circuit operates in the shutdown mode; press Disconnect, the WL700 chip of the RF receiver circuit operates in the operating mode.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This RF chip testing experimental device optimizes the testing process, reduces testing time and labor costs, and improves testing accuracy and reliability, thereby reducing overall testing costs. By using a digital source meter to precisely control the transmission and reception of test signals and employing advanced signal processing algorithms, it effectively reduces signal interference during chip testing. Through integrated design, multiple functions required for RF chip testing are integrated into a compact device, significantly improving the convenience and flexibility of testing. This design not only reduces the complexity of connections between test devices but also reduces errors that may be introduced by connecting multiple devices, further improving testing accuracy. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is the PCB diagram of this utility model;

[0025] Figure 3 This is a flowchart of the present invention;

[0026] Figure 4 This is the circuit diagram of the radio frequency transmitting chip of this utility model.

[0027] Figure 5 This is the circuit diagram of the radio frequency receiver chip of this utility model.

[0028] Figure 6 This is the circuit diagram for the relay switching control of this utility model.

[0029] Figure 7 This is a circuit diagram of the signal input at the transmitting end and the signal output at the receiving end of this utility model;

[0030] In the diagram: 1. First signal input terminal; 2. Third switch; 3. RF transmitter chip circuit; 4. RF transmitter terminal; 5. RF receiver chip circuit; 6. RF receiver terminal; 7. Fourth switch; 8. Second output test terminal; 9. First switch; 10. First digital source meter; 11. Second switch; 12. Second digital source meter; 13. LCD control circuit. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] like Figures 1-7As shown, an experimental device for testing radio frequency (RF) chips includes a first signal input terminal 1, a third switch 2, an RF transmitter chip circuit 3, an RF transmitter terminal 4, an RF receiver chip circuit 5, an RF receiver terminal 6, a fourth switch 7, a second output test terminal 8, a first switch 9, a first digital source meter (10) 0, a second switch 11, a second digital source meter (10) 2, and a liquid crystal control circuit 13. The first signal input terminal 1 is electrically connected to the third switch 2, the third switch 2 is electrically connected to the RF transmitter chip circuit 3, and the RF transmitter chip circuit 3 is electrically connected to the RF transmitter chip circuit 4. The transmitter 4 and the first switch 9 are electrically connected. The first switch 9 is electrically connected to the first digital source meter (10) 0 and the second switch 11. The second switch 11 is electrically connected to the second digital source meter (10) 2 and the radio frequency receiver chip circuit 5. The radio frequency receiver chip circuit 5 is electrically connected to the radio frequency receiver 6 and the fourth switch 7. The fourth switch 7 is electrically connected to the second output test terminal 8. The third switch 2 and the fourth switch 7 are electrically connected to the liquid crystal control circuit 13. The liquid crystal control circuit 13 is electrically connected to the first switch 9 and the second switch 11.

[0033] The first signal input terminal 1 includes a signal generator input terminal, used to connect to the radio frequency signal input to the radio frequency transmitter chip circuit 3; controlled by the third switch 2, the liquid crystal control circuit 13 includes a liquid crystal display screen, the liquid crystal display screen includes a signal switch area, the signal switch area includes on and off, when the on signal switch area is clicked on the liquid crystal display screen of the liquid crystal control circuit 13, the DIN pin of the WL4456 chip of the radio frequency transmitter chip circuit 3 can be connected to the signal generator; the DO pin of the WL700 chip is connected to the oscilloscope.

[0034] The third switch 2 is used to control the connection between the first signal input terminal 1 and the radio frequency transmitter chip circuit 3, and is controlled by the LCD control circuit 13. The radio frequency transmitter chip circuit 3 includes a radio frequency transmitter chip and its peripheral circuits, which are used to convert the input signal into a radio frequency signal and transmit it. The main chip is WL4456. During the test, the performance of the transmitter chip can be evaluated by adjusting the parameters of the transmitter chip and observing its output.

[0035] The RF transmitter 4 is used to transmit the RF signal converted by the RF transmitter chip circuit 3; the RF receiver chip circuit 5 includes the RF receiver chip and its peripheral circuits, which are used to receive the RF signal and convert it into a processable baseband signal. During the test, the performance of the receiver chip can be evaluated by inputting RF signals with different characteristics into the receiver chip and observing its output response.

[0036] The RF receiver 6 is used to receive the RF signal from the RF transmitter 4 and send the RF signal to the receiver pin of the RF receiver chip circuit 5; the fourth switch 7 is used to control the connection between the RF receiver chip circuit 5 and the second output test terminal 8, and is controlled by the LCD control circuit 13.

[0037] The second output test terminal 8 includes an oscilloscope connection terminal, used to output the processing results of the RF transmitter chip and the RF receiver chip, for further analysis of the signal, and for analyzing and evaluating the performance of the RF chip; the first switching switch 9 is used to control the connection between the RF receiver chip circuit 5 and the second first digital source meter 102, and is controlled by the liquid crystal control circuit 13.

[0038] The first digital source meter 100 is connected to the RF transmitter chip circuit 3 via the first switching switch 9, and is used to provide a precise and controllable power input to the RF transmitter chip circuit 3; the second switching switch 11 is used to control the connection between the RF receiver chip circuit 5 and the second digital source meter 102, and is controlled by the liquid crystal control circuit 13; the second digital source meter 102 is connected to the RF receiver chip circuit 5 via the second switching switch 11, and is used to provide a precise and controllable power input to the RF receiver chip circuit 5.

[0039] The LCD control circuit 13 includes an LCD display screen and a control command conversion circuit;

[0040] The LCD screen displays the control interface of the testing device, allowing users to switch between different connection methods by touching various buttons. Specifically, these include:

[0041] Power supply for the transmitter chip: Pressing the Connect button will supply the power supply of the first digital source meter 100 to the WL4456 chip of the RF transmitter chip circuit 3; pressing the Disconnect button will disconnect the power supply of the first digital source meter 100 from the WL4456 chip of the RF transmitter chip circuit 3.

[0042] Signal switch: Press to turn on, which connects the DIN pin of the WL4456 chip in RF transmitter chip circuit 3 to the signal generator, and the DO pin of the WL700 chip in RF receiver chip circuit 5 to the oscilloscope. Press to turn off, which disconnects the DIN pin of the WL4456 chip in RF transmitter chip circuit 3 from the signal generator, and the DO pin of the WL700 chip in RF receiver chip circuit 5 from the oscilloscope.

[0043] Power supply for the receiver chip: Pressing the Connect button will supply the power of the second first digital source meter 102 to the WL700 chip of the RF receiver chip circuit 5; pressing the Disconnect button will disconnect the power supply of the second first digital source meter 102 of the RF receiver chip circuit 5 from the WL700 chip.

[0044] Control signal: Press Connect, the WL700 chip of RF receiver chip circuit 5 operates in shutdown mode; press Disconnect, the WL700 chip of RF receiver chip circuit 5 operates in operating mode.

[0045] It should be noted that this utility model is an experimental device for testing radio frequency chips. When using it... Figure 3 As shown, connect the power supply of the RF chip testing experimental device to the power socket of the test bench, and turn on the power switch of the RF chip testing experimental device. At this time, the indicator light on the experimental circuit board will light up, the screen will light up, and it will enter the working state.

[0046] Connect the red terminal FORCE_HI of the first digital source meter 10 to SOURCE1+ of the RF chip test experimental device, and the black terminal FORCE_LO to SOURCE1- of the RF chip test experimental device. Set the first digital source meter 10 to voltage source and current detection mode, set the voltage to 3.3V, and limit the current to 100mA. At this time, the first digital source meter 10 supplies power to the RF transmitter chip circuit 3 of the RF chip test experimental device.

[0047] Connect the red terminal of FORCE_HI of the second digital source meter 12 to SOURCE2+ of the RF chip test experimental device, and the black terminal FORCE_LO to SOURCE2- of the RF chip test experimental device. Set the second digital source meter 12 to voltage source, current detection mode, and set the voltage to 3.3V with a current limit of 100mA. At this time, the second digital source meter 12 supplies power to the RF receiver chip circuit 5 of the RF chip test experimental device.

[0048] Connect the signal generator to Output1, connect the BNC jumper to SignalIn of the RF chip test experimental device, set the frequency of the signal generator to a specific frequency, the amplitude to 3Vpp, the offset to 1.5Vdc, and the waveform to Square. After confirming that everything is correct, press the Output1 button.

[0049] Connect the oscilloscope to channel CH1 and connect the BNC jumper to the SignalOut section of the RF chip testing experimental setup. 8. Turn on channel one of the oscilloscope and add frequency and duty cycle measurements.

[0050] Operate on the LCD screen:

[0051] Power supply for the transmitter chip: Pressing the connection button will supply power to the WL4456 chip of the RF transmitter chip circuit 3.

[0052] Signal switch: Press to turn on, which can connect the DIN pin of the WL4456 chip in RF transmitter chip circuit 3 to the signal generator;

[0053] Power supply for receiver chip: Pressing the integrated button will supply power from the second digital source meter 12 to the WL700 chip of the RF receiver chip circuit 5.

[0054] Control signal: Press to disconnect, the WL700 chip in RF receiver chip circuit 5 operates in working mode;

[0055] Change the frequency and duty cycle of the signal generator, and observe the frequency and duty cycle on the oscilloscope.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An experimental apparatus for testing radio frequency (RF) chips, comprising a first signal input terminal (1), a third switching switch (2), an RF transmitting chip circuit (3), an RF transmitting terminal (4), an RF receiving chip circuit (5), an RF receiving terminal (6), a fourth switching switch (7), a second output test terminal (8), a first switching switch (9), a first digital source meter (10), a second switching switch (11), a second digital source meter (12), and a liquid crystal control circuit (13), characterized in that: The first signal input terminal (1) is electrically connected to the third switching switch (2), the third switching switch (2) is electrically connected to the radio frequency transmitting chip circuit (3), the radio frequency transmitting chip circuit (3) is electrically connected to the radio frequency transmitting terminal (4) and the first switching switch (9), the first switching switch (9) is electrically connected to the first digital source meter (10) and the second switching switch (11), the second switching switch (11) is electrically connected to the second digital source meter (12) and the radio frequency receiving chip circuit (5), the radio frequency receiving chip circuit (5) is electrically connected to the radio frequency receiving terminal (6) and the fourth switching switch (7), the fourth switching switch (7) is electrically connected to the second output test terminal (8), the third switching switch (2) and the fourth switching switch (7) are electrically connected to the liquid crystal control circuit (13), and the liquid crystal control circuit (13) is electrically connected to the first switching switch (9) and the second switching switch (11).

2. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The first signal input terminal (1) includes a signal generator input terminal for connecting the radio frequency signal of the input radio frequency transmitter chip circuit (3); controlled by the third switching switch (2), the liquid crystal control circuit (13) includes a liquid crystal display screen, the liquid crystal display screen includes a signal switch area, the signal switch area includes on and off, when the on signal switch area is clicked on the liquid crystal display screen of the liquid crystal control circuit (13), the DIN pin of the WL4456 chip of the radio frequency transmitter chip circuit (3) can be connected to the signal generator; the DO pin of the WL700 chip is connected to the oscilloscope.

3. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The third switching switch (2) is used to control the connection between the first signal input terminal (1) and the radio frequency transmitter chip circuit (3), and is controlled by the liquid crystal control circuit (13); the radio frequency transmitter chip circuit (3) includes a radio frequency transmitter chip and its peripheral circuits, which is used to convert the input signal into a radio frequency signal and transmit it. The main chip is WL4456; during the test, the performance of the transmitter chip can be evaluated by adjusting the parameters of the transmitter chip and observing its output.

4. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The radio frequency transmitter (4) is used to transmit the radio frequency signal converted by the radio frequency transmitter chip circuit (3); the radio frequency receiver chip circuit (5) includes a radio frequency receiver chip and its peripheral circuits, which are used to receive radio frequency signals and convert them into processable baseband signals. During the test, the performance of the receiver chip can be evaluated by inputting radio frequency signals with different characteristics into the receiver chip and observing its output response.

5. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The radio frequency receiver (6) is used to receive radio frequency signals from the radio frequency transmitter (4) and send the radio frequency signals to the receiving pin of the radio frequency receiver chip circuit (5); the fourth switching switch (7) is used to control the connection between the radio frequency receiver chip circuit (5) and the second output test terminal (8), and is controlled by the liquid crystal control circuit (13).

6. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The second output test terminal (8) includes an oscilloscope connection terminal, which is used to output the processing results of the RF transmitter chip and the RF receiver chip, and to further analyze the signal for analyzing and evaluating the performance of the RF chip; the first switching switch (9) is used to control the connection between the RF receiver chip circuit (5) and the second digital source meter (12), and is controlled by the liquid crystal control circuit (13).

7. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The first digital source meter (10) is connected to the RF transmitter chip circuit (3) through the first switching switch (9) to provide a precise and controllable power input to the RF transmitter chip circuit (3); the second switching switch (11) is used to control the connection between the RF receiver chip circuit (5) and the second digital source meter (12), and is controlled by the liquid crystal control circuit (13); the second digital source meter (12) is connected to the RF receiver chip circuit (5) through the second switching switch (11) to provide a precise and controllable power input to the RF receiver chip circuit (5).

8. The radio frequency chip testing experimental apparatus according to claim 1, characterized in that: The liquid crystal control circuit (13) includes a liquid crystal display screen and a control command conversion circuit; The LCD screen displays the control interface of the testing device, allowing users to switch between different connection methods by touching different buttons. Specifically, this includes: Power supply for the transmitter chip: Pressing Connect will supply the power of the first digital source meter (10) to the WL4456 chip of the radio frequency transmitter chip circuit (3); pressing Disconnect will disconnect the power of the first digital source meter (10) from the WL4456 chip of the radio frequency transmitter chip circuit (3). Signal switch: Press to turn on, the DIN pin of the WL4456 chip of the RF transmitter chip circuit (3) can be connected to the signal generator, and the DO pin of the WL700 chip of the RF receiver chip circuit (5) can be connected to the oscilloscope. Press to turn off, the DIN pin of the WL4456 chip of the RF transmitter chip circuit (3) can be disconnected from the signal generator, and the DO pin of the WL700 chip of the RF receiver chip circuit (5) can be disconnected from the oscilloscope. Power supply for receiver chip: Pressing Connect will supply the power of the second digital source meter (12) to the WL700 chip of the RF receiver chip circuit (5), and pressing Disconnect will disconnect the power of the second digital source meter (12) of the RF receiver chip circuit (5) from the WL700 chip. Control signal: Press Connect, the WL700 chip of the RF receiver chip circuit (5) operates in the shutdown mode; press Disconnect, the WL700 chip of the RF receiver chip circuit (5) operates in the working mode.

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