A Novel Dual-Band Branch Line Coupler for Dual-Band Butler Matrix

被引：29

作者：

Zaidi, Aijaz M. ^{[1
]}

Kanaujia, Binod K. ^{[2
]}

Beg, Mirza Tariq ^{[1
]}

Kishor, Jugul ^{[3
]}

Rambabu, Karumudi ^{[4
]}

机构：

[1] Jamia Millia Islamia, Dept Elect & Commun Engn, New Delhi 110025, India

[2] Jawaharlal Nehru Univ, Sch Computat & Integrat Sci, New Delhi 110067, India

[3] Natl Inst Technol, Dept Elect & Commun Engn, New Delhi 110040, India

[4] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2R3, Canada

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2019年 / 66卷 / 12期

关键词：

Coupled line; phase difference; dual band impedance transformer; advanced design system;

D O I：

10.1109/TCSII.2019.2911186

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 brief, a novel dual-band branch line coupler (BLC) for designing a dual-band Butler matrix (BM) has been proposed. To realize the proposed BLC, a unique dual-band impedance transformer (DBIT) with a derivation of closed-form design equations, capable of performing a dual-band operation for a traditional transmission line (TL) of any electrical length, has been proposed as well. The proposed BLC is different from the existing dual-band BLCs in terms of its phase difference between the output ports, which enables it to play a role equivalent to the combination of a dual-band equal power 90 BLC and a dual-band 45 / 135 phase shifter. The circuit parameters analysis of the proposed BLC versus the frequency ratio has also been studied here. To verify the design method, a dual-band BLC has been designed using Keysight Technologies' advanced design system (ADS), implemented on a Rogers 5870 for 1 GHz and 1.76 GHz operating frequencies, and then tested.

引用

页码：1987 / 1991

页数：5

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