A 4 X 4 Butler matrix optimized for UMTS applications

被引：4
|
作者：
Kaifas, Theodoros N. [1 ]
Sahalos, John N. [1 ]
机构：
[1] Aristotle Univ Thessaloniki, Radiocommun Lab, Dept Phys, Thessaloniki 54124, Greece
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2007年 / 49卷 / 03期
关键词：
Butler matrix; smart antennas; directional coupler; Lange coupler;
D O I：
10.1002/mop.22200
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 4 X 4 Butler matrix (BM) optimized for UMTS applications is presented. Special care is taken for the design of the elliptic couplers and the line crossovers. The BM is fabricated by conventional photolithograph-V on a single laminate. No expensive double layer multilayer or high permittivity substrates or high-temperature superconductors are used. The design is compact and complies with the bandwidth specifications of the UMTS bond (c) 2007 Wiley Periodicals, Inc.
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页码：585 / 588
页数：4
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