Microstrip antenna array with four port Butler matrix for switched beam base station application

In this paper, the design of a microstrip antenna array with four port Butler matrix is presented. The Butler matrix is used as a beamforming network and it produces orthogonal beams that can be steered in different directions. Simulated butler matrix has 10 dB return loss bandwidth of 20%. This mat...

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Bibliographic Details
Published in2009 12th International Conference on Computer and Information Technology pp. 531 - 536
Main Author Alam, M.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Antenna feeds
Array signal processing
Bandwidth
Base stations
beamforming network
Butler matrix
Circuit simulation
Microstrip antenna arrays
Microstrip antennas
orthogonal beams
single layer structure
Transmission line matrix methods
Wideband
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ISBN9781424462810
1424462819
DOI10.1109/ICCIT.2009.5407295

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Summary:In this paper, the design of a microstrip antenna array with four port Butler matrix is presented. The Butler matrix is used as a beamforming network and it produces orthogonal beams that can be steered in different directions. Simulated butler matrix has 10 dB return loss bandwidth of 20%. This matrix feeds four single element microstrip antennas that can be operated from 2.412 GHz to 2.484 GHz. The circuit is designed by considering a single layer microstrip structure that makes it simpler. The design of wide band microwave devices such as branch-line coupler; cross-coupler and phase-shifters are also incorporated. The switched beam antenna is designed for 2.4 GHz band Wi-Fi (Wireless Fidelity) system.
ISBN:9781424462810
1424462819
DOI:10.1109/ICCIT.2009.5407295