A high-selectivity wideband bandpass filter with multiple transmission poles and zeros

被引：6

作者：

Yu, Huiting ^{[1
]}

Wu, Yongle ^{[1
]}

Wang, Weimin ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing Key Lab Work Safety Intelligent Monitorin, Box 282, Beijing 100876, Peoples R China

来源：

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2021年 / 31卷 / 04期

基金：

中国国家自然科学基金;

关键词：

bandpass filter; coupled line; high‐ selectivity; transmission poles; transmission zeros; wideband;

D O I：

10.1002/mmce.22574

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this paper, a simple high-selectivity wideband bandpass filter based on a novel pi-shaped coupled-line structure is introduced. The presented filter realizes wide bandwidth, excellent passband selectivity and good stopband suppression by using two coupled lines with diagonal open-circuited ports and three coupled lines with cascaded ports. The design theoretical analysis and the complete equation derivation are provided in detail. Furthermore, a prototype with 3-dB fractional bandwidth of 50.9% is simulated, fabricated, and measured. The simulated and measured results have a good consistency, which verifies the analytical design principle.

引用

页数：8

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