Band Pass Negative Group Delay demonstration on a VHF RLC parallel passive lumped circuit

IF 0.8 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Advanced Electromagnetics Pub Date : 2022-02-18 DOI:10.7716/aem.v11i1.1858

E. Sambatra, Y. C. Mombo Boussougou, Lucius Ramifidisoa, Jean-Paterne Kouadio, S. Ngoho, A. Jaomiary, N. Murad

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引用次数: 0

Abstract

This paper demonstrates the bandpass (BP) negative group delay (NGD) function on a passive RLC-parallel lumped network at Very High Frequencies (VHF). After the topological description of the RLC cell, the BP NGD analysis is introduced. The NGD circuit is modelled theoretical by means of voltage transfer function (VTF) expression. The analytical equations illustrating the BP NGD specifications as the NGD center frequency, NGD value, NGD bandwidth and the VTF attenuation are established in function of the R, L and C component parameters. A proof of concept is designed, fabricated as a SMD on printed circuit board, and measured. As expected, the different models (calculated, simulated and measured) present a BP NGD and are significantly corelated. The POC prototype (resp the calculated and simulated model), presents an NGD value of - 8 ns (resp -12 ns) and attenuation of - 10 dB (resp -8 dB) around a 225 MHz (resp 240 MHz) NGD center frequency. Uncertainties analysis (UA) of BP NGD specifications is also studied in order to show the influence of quality and tolerance of components for NGD circuit. The theoretical formulas of NGD specification UAs in function of R, L and C tolerances are derived. UAs with respect to 1%, 2% and 5% relative tolerances of R, L and C components constituting the POC designed circuit are performed.

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VHF RLC并联无源集总电路的带通负群延迟演示

本文证明了甚高频无源RLC并联集总网络的带通（BP）负群延迟（NGD）函数。在对RLC单元进行拓扑描述后，引入了BP NGD分析。通过电压传递函数（VTF）表达式对NGD电路进行了理论建模。以R、L和C分量参数为函数，建立了将BP NGD规范作为NGD中心频率、NGD值、NGD带宽和VTF衰减的解析方程。设计了一个概念验证，并在印刷电路板上制作了SMD，并进行了测量。正如预期的那样，不同的模型（计算、模拟和测量）呈现出BP NGD，并且显著相关。POC原型（分别为计算和模拟模型）在225 MHz（分别为240 MHz）的NGD中心频率附近呈现-8 ns（分别为-12 ns）的NGD值和-10 dB（分别为-8 dB）的衰减。还研究了BP NGD规范的不确定度分析（UA），以表明部件的质量和公差对NGD电路的影响。推导了NGD规范UA在R、L和C公差作用下的理论公式。针对构成POC设计电路的R、L和C部件的1%、2%和5%的相对公差执行UA。

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

Advanced Electromagnetics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.40

自引率

12.50%

发文量

审稿时长

10 weeks

期刊介绍： Advanced Electromagnetics, is electronic peer-reviewed open access journal that publishes original research articles as well as review articles in all areas of electromagnetic science and engineering. The aim of the journal is to become a premier open access source of high quality research that spans the entire broad field of electromagnetics from classic to quantum electrodynamics.