A method for obtaining quasi-peak values based on a digitized receiver

By processing signals using the Brent algorithm based on charge balance, the problems of high resource overhead and poor stability in digital EMI test receivers are solved, enabling rapid response and stable quasi-peak measurement of transient electromagnetic interference signals.

CN122412932APending Publication Date: 2026-07-17NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Filing Date
2026-04-09
Publication Date
2026-07-17

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Abstract

本发明公开了一种基于数字化接收机的获取准峰值的方法，被测信号通过中频滤波器进行滤波处理，再利用希尔伯特变换提取包络，最后选取合适的算法来求取准峰值；现有的EMI测试接收机的准峰值检波器采用数字化算法实现，即利用IIR滤波器的差分方程计算，该方法需要足够多周期的输入信号，存在资源开销大和稳定性差的问题，因此本发明提出一种新的算法，即基于电荷平衡原理的布伦特方法，该方法将信号周期内电容的充电电荷量与放电电荷量相等的电压平衡点作为准峰值，只需对一个周期的信号进行多次迭代运算，具有计算速度快和稳定性高的特点。
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