Dual-band butler matrix for WLAN systems

被引:25
作者
Collado, C [1 ]
Grau, A [1 ]
De Flaviis, F [1 ]
机构
[1] Tech Univ Catalonia, Barcelona 08034, Spain
来源
2005 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-4 | 2005年
关键词
D O I
10.1109/MWSYM.2005.1517201
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 paper shows the design of a dual-band Butler matrix aimed to cover the bands corresponding to the standards IEEE802.1 lath, with particular interest in WLAN systems, at the 2.4 GHz and 5 GHz bands. Measurements of the individual dual-band components which compose the Butler matrix are presented. Those components are: quadrature hybrid and 0 dB coupler. The phase shifter design is also described. A final design of the Butler matrix is proposed and measured. Over the proposed frequency range, the Butler matrix exhibits phase errors and couplings of within 13.5 degrees and -6.7 +/- 0.8 dB, respectively. A performance prediction of the Butler matrix connected to an array of isotropic and perfectly matched antennas separated half-wavelength in air, is also briefly commented.
引用
收藏
页码:2247 / 2250
页数:4
相关论文
共 9 条
[1]  
Accatino L., 1992, Microwave Engineering Europe, P45
[2]  
Butler J., 1961, Electron. Des, V9, P170
[3]   A novel approach to the design and implementation of dual-band compact planar 90° branch-line coupler [J].
Cheng, KKM ;
Wong, FL .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2004, 52 (11) :2458-2463
[4]  
COLLADO C, 2004, UNPUB MICROWAVE THEO
[5]   A high-temperature superconducting Butler matrix [J].
Corona, A ;
Lancaster, MJ .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2003, 13 (04) :3867-3872
[6]  
DENIDNI T, 2003, PERSONAL INDOOR MOBI, V3
[7]   REDUCED-SIZE BRANCH-LINE AND RAT-RACE HYBRIDS FOR UNIPLANAR MMICS [J].
HIROTA, T ;
MINAKAWA, A ;
MURAGUCHI, M .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1990, 38 (03) :270-275
[8]  
LISI M, 1992, MICROWAVE ENG EUROPE
[9]   SYSTEMATIC DESIGN OF BUTLER MATRIX [J].
MOODY, HJ .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1964, AP12 (06) :786-&