Test calibration system suitable for radio frequency matcher
By constructing a closed-loop system of automated test equipment and RF matching devices, the problem of lack of real-time calibration in RF matching device test systems is solved, achieving efficient and accurate matching device performance optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI EVOT SEMICONDUCTOR TECHNOLOGY CO LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-01
AI Technical Summary
Existing RF matching test systems lack automated feedback mechanisms and cannot be calibrated in real time, limiting their applicability in demanding scenarios.
A test and calibration system was designed, which includes an automatic test device, a network analyzer, an RF power supply, a simulated load, and a test object. The system forms a closed loop through serial port connection, enabling real-time data acquisition and feedback, and automatic adjustment of the matching unit performance.
It enables real-time calibration and automatic adjustment of the RF matching unit, improving testing efficiency and accuracy, and meeting the application requirements of high precision and high efficiency.
Smart Images
Figure CN224190137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a test and calibration system suitable for radio frequency matching devices. Background Technology
[0002] In the field of RF matching circuit testing and calibration, existing technologies mainly focus on simulating different load conditions through various structures and test systems to verify the performance of RF matching circuits under specific operating conditions. These systems typically simulate actual load conditions by adjusting parameters such as the amplitude, frequency, and phase of the input signal, thereby evaluating the operating state and matching performance of the RF matching circuit. However, most existing technologies emphasize testing the response of the RF matching circuit, while paying less attention to how the test system itself feeds back to the matching circuit and performs reverse calibration.
[0003] In traditional test systems, RF matching devices are typically considered the object under test, and their calibration process often relies on manual intervention or preset standard values. These test systems analyze the performance of the matching device by monitoring its input and output signals, but when the matching device's performance deviates from the preset standard, there is a lack of automated feedback mechanisms to adjust the matching device's operating state. Usually, adjusting the matching device's performance requires manual intervention or adjustment using offline manual calibration tools, which leads to inefficiencies.
[0004] In certain specialized applications, such as high-precision measurement equipment or RF systems operating in dynamic environments, real-time calibration and automatic adjustment of RF matching devices are crucial. Existing test systems cannot directly feed test data back to the matching device for real-time reverse calibration. This lack of closed-loop feedback limits the applicability of RF matching devices in demanding scenarios, such as complex wireless, satellite, or radar systems, where the matching device's automatic adjustment capability is critical for system stability and signal quality. Utility Model Content
[0005] The purpose of this invention is to provide a test and calibration system suitable for radio frequency matching devices. This system can not only evaluate the performance of the matching device, but also dynamically feed back the test results and perform real-time calibration of the matching device during the test process, thereby ensuring that the performance of the matching device is always in the best state and meeting the application requirements of higher precision and higher efficiency.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A test and calibration system for radio frequency matching devices is characterized by comprising an automatic test equipment system, a network analyzer, an RF power supply, a simulated load, and a device under test (DUT). The automatic test equipment system is connected to the network analyzer via a serial port, the RF power supply via a serial port, the simulated load via a serial port, and the DUT via a serial port.
[0008] Preferably, the network analyzer is connected to the automatic test equipment system via a serial port to measure the impedance characteristics of the system and feed the measurement data back to the automatic test equipment system.
[0009] Preferably, the RF power supply is connected to the automatic test equipment system via a serial port to provide RF power to the entire system and output it to the test object.
[0010] Preferably, the simulated load is connected to the automated test equipment system via a serial port, providing an adjustable load and interacting with the RF matching unit to simulate different load conditions.
[0011] Preferably, the test device is an RF matching device, which is connected to the automatic test equipment system via a serial port and interacts with the automatic test equipment system, network analyzer, RF power supply, and simulated load during the test.
[0012] Preferably, the automated test equipment test system, network analyzer, RF power supply, analog load and test device are connected via serial port to form a closed-loop system. The automated test equipment test system acts as a central control unit, coordinating the connection and data flow between the network analyzer, RF power supply, analog load and test device.
[0013] Preferably, the automatic test equipment of the system, the network analyzer, the RF power supply, the analog load and the device under test are connected via a serial port to ensure data transmission and command exchange between the network analyzer, the RF power supply, the analog load and the device under test and the automatic test equipment.
[0014] Preferably, the automated test equipment test system is connected to the network analyzer, RF power supply, analog load and test object via serial port to form a highly integrated test system.
[0015] Preferably, the network analyzer, RF power supply, analog load, and device under test are connected to different serial ports of the automated test equipment system to ensure independent control and data transmission between the automated test equipment system, the network analyzer, the RF power supply, the analog load, and the device under test.
[0016] Preferably, the serial port connection between the automatic test equipment testing system, the network analyzer, the RF power supply, the analog load, and the test object ensures accurate data transmission during the test and enables real-time acquisition and feedback of test results.
[0017] The beneficial effects of this utility model are:
[0018] This solution establishes a testing and calibration system that not only enables precise testing of the system but also builds a model. Through analysis and calculation of the test results, a calibration model is derived and directly fed back to the matcher. Testing continues, and the calibration model is continuously optimized until the test results are within a relatively ideal range. This testing model not only tests the matcher but also calibrates it, further improving its matching performance. Attached Figure Description
[0019] Figure 1 This is a system structure block diagram of a test and calibration system for radio frequency matching devices according to the present invention;
[0020] Figure 2 This is a system schematic diagram of a test and calibration system for radio frequency matching devices according to the present invention;
[0021] Figure 3 This is a circuit diagram for a synchronous rectifier circuit. Specific implementation methods
[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0023] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example
[0025] See Figure 1-2 As shown, a test and calibration system suitable for radio frequency matching devices is characterized by comprising an automatic test equipment system, a network analyzer, an RF power supply, a simulated load, and a device under test (DUT). The automatic test equipment system is connected to the network analyzer via a serial port, the RF power supply via a serial port, the simulated load via a serial port, and the DUT via a serial port.
[0026] The network analyzer is connected to the automatic test equipment system via a serial port to measure the impedance characteristics of the system and feeds back the measurement data to the automatic test equipment system; the RF power supply is connected to the automatic test equipment system via a serial port to provide RF power to the entire system and outputs it to the device under test.
[0027] The simulated load is connected to the automated test equipment system via a serial port, providing an adjustable load and interacting with the RF matching device to simulate different load conditions; the device under test is the RF matching device, which is connected to the automated test equipment system via a serial port and interacts with the automated test equipment system, network analyzer, RF power supply, and simulated load during the test.
[0028] The network analyzer connects to automated test equipment via a serial port, enabling real-time measurement of the system's impedance characteristics and feeding the measurement data back to the test system. This allows the system to accurately analyze and optimize the performance of the RF matching circuit, ensuring good impedance matching during testing, thereby improving the accuracy and reliability of the test.
[0029] By simulating load interaction with the RF matching unit, the test system can simulate different load conditions. This adjustable load function can simulate various load changes in real-world usage scenarios, helping developers evaluate the performance of the RF matching unit under different load conditions and ensuring the stability and performance of the product in various application environments.
[0030] Each component (network analyzer, RF power supply, analog load, and device under test) connects to the automated test equipment via serial ports, enabling highly automated data acquisition, processing, and feedback. This automated testing process reduces manual intervention, improves testing efficiency, and ensures real-time updates and accuracy of test data, thereby accelerating the R&D cycle and enhancing product quality control.
[0031] The automated test equipment system, network analyzer, RF power supply, analog load, and device under test (DUT) are connected via serial port to form a closed-loop system. The automated test equipment system acts as the central control unit, coordinating the connections and data flow between the network analyzer, RF power supply, analog load, and DUT. The connection between the automated test equipment system, network analyzer, RF power supply, analog load, and DUT is completed via serial port, ensuring data transmission and command exchange between the network analyzer, RF power supply, analog load, DUT, and the automated test equipment system.
[0032] The automated test equipment system is connected to the network analyzer, RF power supply, analog load, and device under test (DUT) via serial ports, forming a highly integrated test system. The network analyzer, RF power supply, analog load, and DUT are each connected to different serial ports of the automated test equipment system to ensure independent control and data transmission among these components. The serial port connections between the automated test equipment system, network analyzer, RF power supply, analog load, and DUT ensure accurate data transmission during testing and enable real-time acquisition and feedback of test results.
[0033] The automated test equipment system acts as the central control unit, connecting to the automated test equipment system, network analyzer, RF power supply, analog load, and device under test (DUT) via serial port. This enables automated coordination and management. The connections and data flow of each component are effectively controlled during the testing process, reducing human intervention, improving testing efficiency, and ensuring precise execution of each step.
[0034] The network analyzer, RF power supply, analog load, and device under test (DUT) are each connected to the automated test equipment system via different serial interfaces. This independent control method not only allows each component to be adjusted and managed independently as needed, but also avoids interference between different devices, improving the system's flexibility and customizability, and enabling rapid switching and execution of different test tasks.
[0035] The serial port connection ensures high accuracy and stability during data transmission, enabling real-time acquisition and feedback of test results. This allows automated testing equipment to process and adjust test parameters promptly, avoiding delays or data loss, improving the accuracy and reliability of test results, and providing a solid foundation for further analysis and optimization.
[0036] Example 2
[0037] Example of an alarm seat
[0038] Structural Composition: This alarm chair includes a power supply, a sensing element, a delay circuit, and an alarm circuit. The sensing element is located below the seat's pressure surface to detect the pressure signal exerted by the human body on the seat. The delay circuit controls the alarm circuit to ensure that the user is reminded to rest when the pressure signal persists for a set time.
[0039] Working principle:
[0040] When a user sits in the seat, the sensing element detects the pressure signal from the human body and converts it into an electrical signal.
[0041] The delay circuit controls the alarm circuit based on a set time delay. The delay circuit will trigger the alarm circuit after the seat has been subjected to a pressure signal for a predetermined time.
[0042] The alarm circuit works by turning on one of the transistors Q3 and Q4 when the emitter potential is low, causing the LED alarm light to flash and alert the user that they have been sitting for too long.
[0043] The vibration motor M is supplied with 3V voltage through the Zener diode VS. When the delay circuit sends a low voltage signal, the vibration motor starts to vibrate, continuously reminding the user to take a break.
[0044] Implementation results:
[0045] This alarm chair can monitor the user's sitting time in real time and remind the user to rest through dual visual and tactile cues (LED flashing and seat vibration), effectively avoiding the health effects of sitting for long periods of time.
[0046] Example 3
[0047] See Figure 3 As shown, an embodiment of the synchronous rectifier circuit
[0048] Structural components: This synchronous rectifier circuit includes a transformer, diode Q1, current-limiting resistors R1 and R2, capacitors C1 and C2, voltage-dividing resistors R3 and R4, and capacitor C3.
[0049] Working principle:
[0050] The self-driven winding of the transformer provides synchronous drive for Q1. When the secondary output of the transformer is turned on, the drive waveform output by the self-driven transformer winding is reduced in amplitude by current-limiting resistors R1 and R2 and capacitors C1 and C2, and then further stabilized by voltage-dividing resistors R3 and R4 and capacitor C3.
[0051] After the above current limiting, amplitude reduction and voltage division, a stable drive waveform is input to Q1, ensuring that Q1 can be synchronously turned on to complete the rectification process.
[0052] When current flows through Q1, the power supply conversion efficiency is improved, and Q1 is protected from damage due to overvoltage by a multi-stage protection circuit.
[0053] Implementation results:
[0054] This circuit design optimizes the synchronous rectification process, improves the power conversion efficiency, and effectively protects Q1 from overvoltage damage. It is suitable for power supply systems with high efficiency and high reliability requirements.
[0055] Example 4
[0056] Implementation examples of ATE testing systems
[0057] Structural Composition: This ATE (Automatic Test Equipment) test system consists of multiple test devices, including a network analyzer, RF power supply, analog load, device under test (DUT), and automatic test equipment control system.
[0058] Working principle:
[0059] The automated test equipment system communicates with a network analyzer, RF power supply, analog load, and device under test (DUT) via serial port connection. The system first obtains the DUT's test results Ti(t) through the network analyzer.
[0060] The measured Ti(t) is compared with the expected value. If the difference is less than the set threshold, the test is considered qualified and the system continues to perform other tests.
[0061] If the difference between the test result and the expected value exceeds the threshold, the automated test equipment will generate a calibration function fi(t) based on the known model and write the calibration function into the DUT.
[0062] After calibration, the automated test equipment performs the test again, repeating this process until the test result Ti(t) meets expectations. Finally, the calibration function f(t) is written into the DUT, completing the entire testing and calibration process.
[0063] Implementation results:
[0064] This testing system enables automated, accurate, and efficient testing and calibration processes. Through multiple rounds of adaptive calibration and correction, it ensures that the performance of the test item meets expected requirements, greatly improving testing efficiency and accuracy. It is widely used in fields such as radio frequency equipment and communication systems.
[0065] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of this utility model, shall fall within the scope of protection of this utility model.
Claims
1. A test and calibration system suitable for radio frequency matching devices, characterized in that, The device includes an automated test system, a network analyzer, an RF power supply, a simulated load, and a device under test (DUT). The automated test system is connected to the network analyzer, the RF power supply, the simulated load, and the DUT via a serial port.
2. The test calibration system of claim 1, wherein, The network analyzer is connected to the automatic test equipment system via a serial port to measure the impedance characteristics of the system and feed the measurement data back to the automatic test equipment system.
3. The test and calibration system according to claim 2, characterized in that, The RF power supply is connected to the automatic test equipment system via a serial port, providing RF power to the entire system and outputting it to the device under test.
4. The test and calibration system according to claim 3, characterized in that, The simulated load is connected to the automated test equipment system via a serial port, providing an adjustable load and interacting with the RF matching unit to simulate different load conditions.
5. The test and calibration system according to claim 1, characterized in that, The device under test (DUT) is an RF matching device. The DUT is connected to the automated test equipment system via a serial port and interacts with the automated test equipment system, network analyzer, RF power supply, and simulated load during the test.
6. The test and calibration system according to claim 5, characterized in that, The automated test equipment system, network analyzer, RF power supply, analog load and test device are connected via serial port to form a closed-loop system. The automated test equipment system acts as the central control unit, coordinating the connection and data flow between the network analyzer, RF power supply, analog load and test device.
7. The test and calibration system according to claim 6, characterized in that, The automated test equipment system of the system, the network analyzer, the RF power supply, the analog load and the device under test are connected via serial port to ensure data transmission and command exchange between the network analyzer, the RF power supply, the analog load and the device under test and the automated test equipment system.
8. The test calibration system of claim 1, wherein, The automated test equipment system is connected to the network analyzer, RF power supply, analog load and test device via serial port to form a highly integrated test system.
9. The test calibration system of claim 8, wherein, The network analyzer, RF power supply, analog load, and device under test are connected to different serial ports of the automated test equipment system to ensure independent control and data transmission between the automated test equipment system, the network analyzer, the RF power supply, the analog load, and the device under test.
10. The test and calibration system according to claim 9, characterized in that, The serial port connection between the automated test equipment testing system, network analyzer, RF power supply, analog load, and test device ensures accurate data transmission during the testing process and enables real-time acquisition and feedback of test results.