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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Ultra-Wideband Balanced Bandpass Filters Based on Transversal Signal-Interference Concepts
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Ultra-Wideband Balanced Bandpass Filters Based on Transversal Signal-Interference Concepts

机译：基于横向信号干扰概念的超宽带平衡带通滤波器

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摘要

Two ultra-wideband balanced bandpass filters based on transversal signal-interference concepts are proposed in this paper. By employing the two structures: microstrip/slotline transition, and quarter-wavelength shorted coupler lines, 180 degrees phase shift can be easily implemented for each design. In addition, due to the different transmission paths, wideband common mode rejection and differential mode transmission bandwidth can be achieved. Two balanced filters centered at 3 GHz are calculated, fabricated and measured successfully. For the differential mode, the 3-dB fractional bandwidths are 102% from 1.47 GHz to 4.53 GHz and 103% from 1.52 GHz to 4.61 GHz, respectively, and the return loss are both greater than 20 dB. For the common mode, signals are suppressed below -20 dB and -15 dB over the whole frequency band.
机译：本文提出了两个基于横向信号干扰概念的超宽带平衡带通滤波器。通过采用两种结构：微带/缝线过渡和四分之一波长短耦合器线，可以轻松地为每种设计实现180度相移。另外，由于传输路径的不同，可以实现宽带共模抑制和差模传输带宽。成功地计算，制造和测量了两个以3 GHz为中心的平衡滤波器。对于差分模式，从1.47 GHz到4.53 GHz，3 dB分数带宽分别为102％，从1.52 GHz到4.61 GHz，其3dB分带宽为103％，回波损耗均大于20 dB。对于共模，信号在整个频带内被抑制在-20 dB和-15 dB以下。

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