A real-time online calibration system and method for a vector antenna tuner

By using a real-time online calibration system that automatically triggers calibration with temperature sensors and a DDS control module, the problems of cumbersome calibration of vector antenna tuners and inaccurate impedance measurements in low-temperature environments are solved, achieving efficient and reliable online automatic calibration.

CN116527451BActive Publication Date: 2026-01-30SHAANXI FENGHUO ELECTRONICS
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Patent Information

Application Number
CN202310327049.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-30
Publication Date
2026-01-30
Estimated Expiration
2043-03-30

AI Technical Summary

Technical Problem

The existing calibration methods for vector antenna tuners are cumbersome. Component parameters drift in low-temperature environments, leading to inaccurate impedance measurements. Furthermore, the cumbersome calibration steps must be repeated after repairing or replacing the detection module.

Method used

A real-time online calibration system is adopted. The temperature sensor module detects environmental changes, and the DDS control module automatically triggers the switching module and OSL calibration module to perform calibration. The automatic calibration control software of the debugging terminal realizes online automatic calibration, avoiding the need to disassemble the antenna tuner and external calibration components.

Benefits of technology

It enables real-time online automatic calibration of the antenna tuner, improves product reliability, solves the problem of inaccurate impedance measurement in low-temperature environments, and saves manpower and resources.

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Abstract

This invention discloses a real-time online calibration system and method for a vector antenna tuner. The system includes a debugging terminal communicatively connected to the vector antenna tuner. The vector antenna tuner is equipped with a detection device, which includes a temperature sensor module, a DDS control module, a DDS measurement module, a switching module, and an OSL calibration module, all communicatively connected in sequence. In the method, the debugging terminal sends a calibration command to the DDS control module, or the temperature sensor module detects low-temperature environment information and sends it to the DDS control module. The DDS control module automatically triggers the calibration command, controls the switching module to switch states, and simultaneously controls the OSL calibration module to perform calibration in the corresponding state. This achieves real-time online automatic calibration of the antenna tuner, eliminating the need to repeatedly open and close the device and plug and unplug calibration components. It solves the problem of inaccurate impedance measurement caused by deviations in the original room-temperature calibration data due to component parameter drift in low-temperature environments, thus improving reliability and saving manpower and resources.
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