Universiti Teknologi Malaysia Institutional Repository

Beamforming networks using cascaded Butler Matrices

Abdul Rahim, Sharul Kamal and Gardner, Peter (2007) Beamforming networks using cascaded Butler Matrices. In: Proceedings of Asia-Pacific Conference on Applied Electromagnetics. IEEE, New York, USA, pp. 593-597. ISBN 978-1-4244-1434-5

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Abstract

This paper describes a smart antenna system, which employs the advantages of cascaded Butler Matrices in wireless communication system. By using the narrow beams available from the first Butler Matrix, it is possible for a receiver to increase the gain in the desired signal directions and reduce the gain in interference directions. Hence, high-gain narrow beam signals for long-range application are produced. A technique is introduced which uses a second Butler Matrix, acting as a mirror of the first Butler Matrix, reconstructing the antenna patterns of the individual radiating elements. The resulting outputs have broad beam width that can be used for short-range communication. This beamforming network using Butler Matrices provides a method, which could be applicable in wireless communication system applications.

Item Type:Book Section
Additional Information:2007 Asia-Pacific Conference on Applied Electromagnetics Melaka, Malaysia, Dec. 04-06, 2007
Uncontrolled Keywords:butler matrix, cascaded butler matrices, narrow beam width and broad beam width
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:11641
Deposited By: Nor Asmida Abdullah
Deposited On:28 Dec 2010 07:40
Last Modified:10 Jan 2011 03:40

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