On the design of a single-layer wideband Butler matrix for switched-beam UMTS system applications

被引：24
|
作者：
Kaifas, Theodoros N. [1 ]
Sahalos, John N. [1 ]
机构：
[1] Aristotle Univ Thessaloniki, Sch Sci, Radiocommun Lab, Thessaloniki 54124, Greece
来源：
IEEE ANTENNAS AND PROPAGATION MAGAZINE | 2006年 / 48卷 / 06期
关键词：
Butler matrix; antenna array feeds; smart antennas; antenna arrays; adaptive arrays; directional coupler; Lange coupler; discrete Fourier transforms;
D O I：
10.1109/MAP.2006.323317
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 Butler matrix (BM) for UMTS applications is presented. The Butler matrix was fabricated by conventional photolithography on a single laminate. The design is compact and complies with the required bandwidth. The design is based on the use of an elliptical coupler with certain geometrical characteristics, and a Lange coupler as a crossover. Furthermore, a design-scaling procedure that produces an NxN Butler matrix by using two (N/2)x(N/2) Butler matrices is given. The presented performance extrapolations clarify the potential and scalability of our approach.
引用
收藏
页码：193 / 204
页数：12
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