Multi-channel phase correction device and correction method for transmitting channel

A technology of transmitting channel and phase correction, applied in transmitter monitoring and other directions, can solve the problems of inconvenient re-calibration, time-consuming and labor-intensive correction, inconsistency of phase response, etc. The effect of reducing the amount of computation

Inactive Publication Date: 2018-03-16
WUHAN BINHU ELECTRONICS
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Problems solved by technology

[0002] Microwave signal transmission channels include analog devices such as high amplifiers, frequency mixers, and intermediate amplifiers. Due to differences in manufacturing processes or electrical properties, different transmission channels inevitably have differences in characteristics, resulting in inconsistency in the phase response of each channel. The phase response of each channel is different, which will cause the transmitted waveform to be incorrectly synthesized
[0003] The existing phase correction method for different transmission channels is: during manufacture, test each channel step by step, then obtain relevant parameters, and then perform compensation, but for the calibration of dozens or even hundreds of transmission channels, the calibration consumes Time-consuming and labor-intensive, and it is not easy to re-calibrate after the device is repaired

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[0018] Explanation of terms: NCO (Numerically Controlled Oscillator), which is a coherent oscillator: because the formation and multiplication of two orthogonal coherent oscillator signals are the result of digital operations, their orthogonality can be fully guaranteed, as long as the operation is guaranteed Accuracy is enough.

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 Said, the transmit channel multi-channel phase and amplitude correction device of the present invention comprises N transmit channels, 1 common receiving module, 1 transmit phase calculation module, each transmit channel output port is connected with the public receive module input port, and the public The output port of the receiving module is connected to the input port of the transmit phase calculation module. Each transmit channel includes a phase shifter and a transmit switch. The output of the transmit phase cal...

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Abstract

The invention relates to the field of microwave signal processing, and particularly relates to a multi-channel phase correction device and correction method for a transmitting channel. According to the scheme of the invention, a standard waveform is generated by each transmitting channel, a transmitting phase calculation module acquires a signal and calculates a phase offset, and thus the correction of the phase of the transmitting channel can be performed. The method disclosed by the invention has the advantages of small calculation amount, timing compensation, high accuracy and the like.

Description

technical field [0001] The invention relates to the field of microwave signal processing, in particular to a transmission channel multi-channel phase correction device and correction method. Background technique [0002] Microwave signal transmission channels include analog devices such as high amplifiers, frequency mixers, and intermediate amplifiers. Due to differences in manufacturing processes or electrical properties, different transmission channels inevitably have differences in characteristics, resulting in inconsistency in the phase response of each channel. The different phase response of each channel will cause the transmit waveform to not be synthesized correctly. [0003] The existing phase correction method for different transmission channels is: during manufacture, test each channel step by step, then obtain relevant parameters, and then perform compensation, but for the calibration of dozens or even hundreds of transmission channels, the calibration consumes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/11
CPCH04B17/11
Inventor 宋慧康玉胜沈小川
Owner WUHAN BINHU ELECTRONICS
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