Performance Bounds for a Maxima-Sampling Envelope Detector

IF 4.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-09-02 DOI:10.1109/TCSII.2025.3605161

Swagat Bhattacharyya

引用次数: 0

Abstract

Envelope detectors in automatic gain control systems must achieve both low tracking latency and low output ripple for feedback stability. Conventional non-sampled envelope detectors intrinsically trade off latency and ripple. Maxima-sampling envelope detectors (MSEDs), which demodulate by sampling signal peaks, circumvent this latency-ripple trade-off, enabling control loops that remain stable over several frequency decades. However, MSED nonlinearity causes an intricate, previously uncharacterized interplay between input spectral properties and performance. This work analytically derives and numerically verifies input-dependent performance bounds for MSEDs. By formulating practical “rules-of-thumb” for mixed-signal circuit designers, we pave the way for the broader adoption of MSEDs.

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最大采样包络检测器的性能边界

自动增益控制系统中的包络检测器必须同时达到低跟踪延迟和低输出纹波的反馈稳定性。传统的非采样包络检测器本质上权衡了延迟和纹波。最大采样包络检测器（msed）通过采样信号峰值进行解调，规避了这种延迟纹波权衡，使控制回路在几十年的频率内保持稳定。然而，MSED非线性导致输入频谱特性和性能之间复杂的，以前未表征的相互作用。本工作解析推导并数值验证了msed的输入相关性能界限。通过为混合信号电路设计人员制定实用的“经验法则”，我们为更广泛地采用msed铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.