宽带射频谐波抑制方法及FPGA实现方法
By coupling two signals at the output of the RF power amplifier, and using the intermediate frequency correlation peak for fast frequency sweep and the FPGA phase control module, the phase is dynamically adjusted to achieve broadband adaptive harmonic suppression, which solves the problems of low efficiency and poor adaptability in the existing technology and achieves a highly efficient harmonic suppression effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU SIWI POWER ELECTRONICS TECH
- Filing Date
- 2023-12-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing broadband harmonic suppression schemes cannot effectively suppress harmonic components when the signal changes, and traditional methods are inefficient, increase equipment size and power consumption, and cannot meet broadband harmonic suppression requirements.
By coupling two original amplified signals from the output of the RF power amplifier, the frequency of the second harmonic signal is locked, and the phase is adjusted using the intermediate frequency correlation peak fast frequency sweep method. Combined with the FPGA to implement the phase control module for cancellation and filtering, the frequency sweep step size and direction are dynamically adjusted to achieve broadband adaptive harmonic suppression.
It achieves harmonic suppression of more than 20dB at any frequency point in the 2GHz to 3GHz range, meets the standards in the field of EMC effect testing, and has better cancellation and broadband adaptability.
Smart Images
Figure CN117805480B_ABST