Broadband Integrated 8 x 8 Butler Matrix Utilizing Quadrature Couplers and Schiffman Phase Shifters for Multibeam Antennas With Broadside Beam

被引：64
|
作者：
Wincza, Krzysztof [1 ]
Gruszczynski, Slawomir [1 ]
机构：
[1] AGH Univ Sci & Technol, Dept Elect, PL-30059 Krakow, Poland
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2016年 / 64卷 / 08期
关键词：
Butler matrices; coupled-line directional couplers; multibeam antennas; quadrature-coupler crossovers; Schiffman phase shifters; ARRAY; DESIGN; CMOS;
D O I：
10.1109/TMTT.2016.2582877
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：
A novel realization of a broadband 8 x 8 Butler matrix having phase progressions 0 degrees, +/-45 degrees, +/-90 degrees, +/-135 degrees, and 180 degrees has been proposed. The presented network is composed of coupled-line 3-dB/90 degrees directional couplers and Schiffman phase shifters that ensure its broadband amplitude and phase characteristics. The proposed solution allows for a fully planar realization without any interlayer connections, which has been achieved by both rearrangement of the matrix layout and realization of the selected crossovers as tandem connections of quadrature directional couplers. The proposed concept has been verified experimentally by the design of a Butler matrix operating within 2.5-3.5 GHz and applied in a multibeam antenna array with broadside beam.
引用
收藏
页码：2596 / 2604
页数：9
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