A Compact Broadband 4x4 Butler Matrix With 360° Continuous Progressive Phase Shift

被引：11

作者：

Wang, Xi-Zhu ^{[1
]}

Chen, Fu-Chang ^{[1
]}

Chu, Qing-Xin ^{[1
]}

机构：

[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2023年 / 71卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Butler matrices; Couplers; Broadband communication; Wideband; Transmission line matrix methods; Transmission line measurements; Power transmission lines; Butler matrix; continuous tunability; phase shifter (PS); single layer; size miniaturization; wideband operation; 4; X; BRANCH-LINE; DESIGN; 90-DEGREES; ARRAYS;

D O I：

10.1109/TMTT.2023.3249352

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：

This article presents a novel compact broadband4x4 Butler matrix with 360 degrees continuous progressive phase shift.The tunable Butler matrix is composed of a typical 4x4 Butlermatrix and four wideband continuously tunable phase shifters(PSs). To realize the size miniaturization, the right-handedtransmission line (RHTL) is employed to construct the compactbranch-line couplers and crossovers, which performs well overthe operating bandwidth. The size of the proposed Butler matrixutilizing the compact coupler and crossover is reduced about 50%compared with the traditional design. A novel coupled-resonantPS is proposed to realize 135 degrees +/- 10 degrees continuous phase shift overa wide fractional bandwidth (FBW) of 33.3% (2.0-2.8 GHz).By cascading the miniaturized 4x4 Butler matrix and the 135?continuously tunable PSs, 360 degrees continuous progressive phase shiftbetween four outputs can be obtained. The measured resultsverify the feasibility of the design

引用

页码：3906 / 3914

页数：9

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