Integrated portable multichannel phase coherent signal analyzer

Abstract

The invention discloses an integrated portable multichannel phase coherent signal analyzer, comprising the following components: a clock generation module, a radio frequency signal source module, a coherent signal generation module, a local oscillator signal source module, a coherent receiver module, a master computer calling frequency and tracking algorithm module and an error correction and algorithm revising module, wherein, the clock generation module provides reference time base signals for the radio frequency signal source module and the local oscillator signal source module; the radio frequency signal source generation module generates a radio frequency excitation signal for the coherent signal generation module; the coherent signal generation module outputs four paths of coherent radio frequency excitation signals through an output interface; the local oscillator signal source module generates a coherent local oscillator signal to the coherent receiver module; the coherent receiver module acquires the four paths of detected signals from an input interface and forwards the detected signals to a main control computer after being processed; and the main control computer calling frequency and tracking algorithm module and the error correction and algorithm revising module finish the final process on the detected signals. The analyzer of the invention has small volume, low cost, simple testing process, and vector error correction and revising function, ensures the measuring accuracy of the multichannel phase and the amplitude difference, lowers the testing cost, shortens the testing time and improves the testing flexibility and the testing accuracy.

Description

technical field [0001] The invention relates to a phase coherent signal analysis and measurement technology, in particular to an integrated portable multi-channel phase coherent signal analyzer. Background technique [0002] Spatial power combining is based on the coherent superposition of multi-channel coherent electromagnetic radiation signals in space, and a method of synthesizing high-power radiation signals with multiple low-power radiation signals. This technology is a good solution to the requirement of infinite radiation power and limited output power of devices. Once the power combining technology was proposed, it was widely used in the design schemes of various high-power transmitting sources and high-sensitivity receivers, and achieved good results. Theoretically speaking, the combined power of N coherent radiation signals at a certain point in space mainly depends on the amplitude and phase of each signal arriving at this point, that is, the vector sum of N signa...

AI Technical Summary

Problems solved by technology

It is the highest measurement accuracy among these three measurement methods, but it still lacks dedicated error correction and calibration functions in the phase relationship measurement of multi-channel signals; to realize the analysis of the phase and amplitude consistency of the network under test, it is necessary to use An additional RF signal source, or use the vector network analyzer's own 2-way coherent signal output as the excitation signal, and these two configuration modes increase the size of the test instrument, test complexity and test cost

Moreover, this method has no frequency tracking technology, and it can measure signals with known frequencies, but it cannot realize the tracking test of unknown signal frequencies

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