Beamforming networks using cascaded Butler Matrices
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...
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| Main Authors: | , |
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| Format: | Book Section |
| Language: | English |
| Published: |
IEEE
2007
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/11641/1/Beamforming%20Networks%20Using%20Cascaded%20Butler%20Matrices_2007.pdf http://eprints.utm.my/id/eprint/11641/ http://apps.isiknowledge.com/ |
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| Institution: | Universiti Teknologi Malaysia |
| Language: | English |
| Summary: | 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. |
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