Radio frequency unit calibration and group measurement system and method

By using random phase and amplitude signals to excite the RF unit, combined with a power meter and an iterative convergence algorithm, the high-cost measurement and non-perpendicular orthogonal signal correction problems in the existing technology are solved, and low-cost and fast RF unit correction is achieved.

CN116208262BActive Publication Date: 2026-04-17OHMPLUS TECHNOLOGY INC
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Patent Information

Application Number
CN202211485438.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-12-01
Filing Date
2022-11-24
Publication Date
2026-04-17
Estimated Expiration
2042-11-24

AI Technical Summary

Technical Problem

Existing technologies require expensive equipment to simultaneously measure the power and phase of the electromagnetic field radiated by the antenna when calibrating radio frequency units, resulting in high production line costs and difficulty in quickly correcting phase errors under non-perpendicular orthogonal signals.

Method used

By using signals with different random phases and amplitudes to excite antenna elements, the radiated power is measured by a power meter and iterative convergence is performed to obtain amplitude and phase difference information. This method is suitable for testing group antenna package modules or RF modules, and only a single signal source device is needed to measure multiple RF units.

Benefits of technology

In the absence of phase information, signal solving is performed by measuring information and random microwave signals, which reduces measurement costs and enables rapid correction of the amplitude and phase difference information of RF units. It is suitable for testing group antenna package modules or RF modules.

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Abstract

The application discloses a correction and group measurement system and method of radio frequency unit, which comprises a control device, a signal source device, a test platform and a measurement device. The test platform and the measurement device are used for M times of measurement. In each measurement, the microwave signal source provided by the signal source device is converted into a random microwave signal with N random amplitudes and phases by the test platform, and the N radio frequency units placed on the test platform are excited to output each random microwave signal. Each random microwave signal is superimposed on the measured path to form a measurement signal. The measurement device receives the measurement signals of the M times of measurement and converts them into M measurement information respectively. The control device solves the signal of the M measurement information, and performs iteration and convergence calculation on all the solving results to obtain the correction information of the N radio frequency units in a specific state, so as to correct the radio frequency unit by using the correction information.
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