Harmonic compensation method based on FPGA

A harmonic compensation and sub-harmonic technology, applied in the field of harmonic compensation, can solve problems such as harmonic distortion, avoid the impact of compensation performance, realize flexibility, and simplify the effect of system hardware design
CN112084732APending Publication Date: 2020-12-15CHINA ELECTRONIS TECH INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ELECTRONIS TECH INSTR CO LTD
Publication Date
2020-12-15

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Abstract

The invention provides a harmonic compensation method based on an FPGA, and the method comprises the steps: constructing a harmonic compensation circuit in the FPGA, wherein the harmonic compensationcircuit comprises a correction waveform generation module, a correction waveform phase control module, a correction waveform amplitude control module and a summation module, all of which are sequentially connected. The harmonic compensation method comprises the steps of acquiring orthogonal waveform data of original waveform data by Hilbert transform, and acquiring harmonic waveform data of all orders by calculation according to the orthogonal waveform data; calculating a correction phase of each harmonic waveform in the correction waveform phase control module, and performing phase correctionon each harmonic by utilizing the correction phase; calculating a correction amplification factor of each harmonic waveform in the correction waveform amplitude control module, and multiplying the amplification factor by each harmonic waveform data; and carrying out summation operation on the harmonic correction waveform data of each order of amplitude control and the original waveform data. Thecompensation method provided by the invention has low sensitivity to the environment, and can realize accurate compensation of harmonic waves with pertinence to any frequency.
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Description

technical field

[0001] The invention relates to the field of harmonic compensation of arbitrary waveform generators, in particular to an FPGA-based harmonic compensation method. Background technique

[0002] Arbitrary waveform generators are widely used in radar signal simulation, electronic countermeasures, complex electromagnetic environment construction, and quantum communication super multi-channel synchronous excitation generation due to its great flexibility in waveform generation. When the arbitrary waveform generator generates various signals, different degrees of harmonic distortion will inevitably occur due to the inherent characteristics of the hardware circuit in the arbitrary waveform generator.

[0003] In order to solve the above problems, the following two methods are commonly used at present:

[0004] (1) Starting from the source of harmonic distortion, through in-depth circuit analysis, combined with advanced processing technology, design a hardware circui...

Claims

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