A Design of 3-pole Coupled Line Bandpass Filter Using Group Delay Analysis Approach

被引：2

作者：

Lee, Jaehun ^{[1
]}

Chaudhary, Girdhari ^{[2
]}

Pech, Phanam ^{[1
]}

Jeong, Yongchae ^{[1
]}

机构：

[1] Jeonbuk Natl Univ, Div Elect & Informat Engineeering, Jeonju Si, South Korea

[2] Jeonbuk Natl Univ, JIANT IT Human Resource Dev Ctr, Jeonju Si, South Korea

来源：

2022 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) | 2022年

基金：

新加坡国家研究基金会;

关键词：

Bandpass filter; coupled line; group delay analysis; shunt-stub; wide bandwidth;

D O I：

10.1109/ISAP53582.2022.9998795

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we present a design of 3-pole coupled line bandpass filter using group delay (GD) analysis approach. The proposed 3-pole BPF consists of two-coupled line with short-circuited stub instead of four coupled lines conventional BPF. The design equations are derived by equating GD of the proposed and conventional 3-pole BPF. The GD value of the proposed BPF is controlled by adjusting fractional bandwidth of filter. For proof of concept, the proposed BPF was designed and fabricated at center frequency of 3.50 GHz. The measured results are well agreed with simulations and theoretically predicted results. The measurement results revealed that the proposed BPF achieved the insertion loss of 0.8 dB with fractional bandwidth of 21.71% (760 MHz) and GD of 0.92 ns.

引用

页码：111 / 112

页数：2

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