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Innovative Study of Resistor Shunt-Based Bridged-T Topology With Bandpass Negative Group Delay Behavior
Radio Science ( IF 1.6 ) Pub Date : 2021-06-03 , DOI: 10.1029/2021rs007280
Zhifei Xu 1 , Jamel Nebhen 2 , George Chan 3 , Wenceslas Rahajandraibe 4 , Blaise Ravelo 5
Affiliation  

In this paper, new bridged-T network operating with bandpass (BP) negative group delay (NGD) function is introduced. The circuit design is innovatively based on an inductorless passive RC-network. The innovative bridged-T topology is implemented with a R-shunt configuration. The analytical transfer function of voltages and equivalent impedance-matrix are carefully calculated. The BP NGD analysis and design of the bridged-T topology is developed. The BP NGD properties and specifications are analytically investigated. A proof of concept of R-shunt bridged-T prototype with a surface-mounted device printed circuit board is designed, fabricated, and measured to verify the BP NGD behavior from theoretical equations and simulations. As expected, the theoretical, simulation, and measurements results are in very good agreement. From measurement results, the fabricated BP NGD C-shunt bridged-T reaches a delay of about −45 ns and a center frequency of about 0.5 MHz over a −3 dB attenuation.

中文翻译:

具有带通负群延迟特性的基于电阻分流器的桥接T拓扑的创新研究

在本文中,介绍了具有带通 (BP) 负群延迟 (NGD) 功能的新型桥接 T 网络。电路设计创新地基于无电感无源 RC 网络。创新的桥接 T 拓扑是通过 R 分流配置实现的。电压和等效阻抗矩阵的解析传递函数经过仔细计算。开发了桥接 T 拓扑的 BP NGD 分析和设计。对 BP NGD 的特性和规格进行了分析研究。设计、制造和测量带有表面贴装器件印刷电路板的 R 并联桥接 T 原型的概念验证,以通过理论方程和模拟验证 BP NGD 行为。正如预期的那样,理论、模拟和测量结果非常一致。从测量结果来看,
更新日期:2021-07-21
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