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A novel design of Butler matrix using optimised size of branch-line coupler

Recent development shows that the reduced size couplers are becoming potential building blocks for the growing wireless communications market. This paper presents a new design and realisation of four ports Butler Matrix using the reduced size of branch-line coupler operating at 1.8GHz. The purpose i...

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Main Authors: Rahim, S.K.A., Jizat, N.M., Rahman, T.A., Geok, T.K., Reza, A.W.
Format: Article
Published: INOE Publishing House 2010
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/12251/
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spelling my.um.eprints.122512017-10-05T03:35:31Z http://eprints.um.edu.my/12251/ A novel design of Butler matrix using optimised size of branch-line coupler Rahim, S.K.A. Jizat, N.M. Rahman, T.A. Geok, T.K. Reza, A.W. Q Science (General) Recent development shows that the reduced size couplers are becoming potential building blocks for the growing wireless communications market. This paper presents a new design and realisation of four ports Butler Matrix using the reduced size of branch-line coupler operating at 1.8GHz. The purpose is to reduce the size of branch-line coupler to agree with the application requirements, e.g., mobile applications. Butler Matrix generally consists of branch-line coupler, crossover, and phase shifters. The branch-line coupler has been used as the functional and smart component in constructing the planar of 4x4 Butler Matrix. Using the two-step stubs impedance, the size of the branch-line coupler is optimised in this study. The obtained results show that the area of branch-line coupler has been reduced to 66% compared to the normal size branch-line coupler. Besides, the reduced size coupler shows the same performance like the normal coupler, maintains lower manufacturing cost and miniaturisation in size. The results obtained from this study show satisfactory performance and good agreement with the theoretical results. INOE Publishing House 2010 Article PeerReviewed Rahim, S.K.A. and Jizat, N.M. and Rahman, T.A. and Geok, T.K. and Reza, A.W. (2010) A novel design of Butler matrix using optimised size of branch-line coupler. Journal of Optoelectronics and Advanced Materials, 12 (10). pp. 2031-2039. ISSN 1454-4164
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Rahim, S.K.A.
Jizat, N.M.
Rahman, T.A.
Geok, T.K.
Reza, A.W.
A novel design of Butler matrix using optimised size of branch-line coupler
description Recent development shows that the reduced size couplers are becoming potential building blocks for the growing wireless communications market. This paper presents a new design and realisation of four ports Butler Matrix using the reduced size of branch-line coupler operating at 1.8GHz. The purpose is to reduce the size of branch-line coupler to agree with the application requirements, e.g., mobile applications. Butler Matrix generally consists of branch-line coupler, crossover, and phase shifters. The branch-line coupler has been used as the functional and smart component in constructing the planar of 4x4 Butler Matrix. Using the two-step stubs impedance, the size of the branch-line coupler is optimised in this study. The obtained results show that the area of branch-line coupler has been reduced to 66% compared to the normal size branch-line coupler. Besides, the reduced size coupler shows the same performance like the normal coupler, maintains lower manufacturing cost and miniaturisation in size. The results obtained from this study show satisfactory performance and good agreement with the theoretical results.
format Article
author Rahim, S.K.A.
Jizat, N.M.
Rahman, T.A.
Geok, T.K.
Reza, A.W.
author_facet Rahim, S.K.A.
Jizat, N.M.
Rahman, T.A.
Geok, T.K.
Reza, A.W.
author_sort Rahim, S.K.A.
title A novel design of Butler matrix using optimised size of branch-line coupler
title_short A novel design of Butler matrix using optimised size of branch-line coupler
title_full A novel design of Butler matrix using optimised size of branch-line coupler
title_fullStr A novel design of Butler matrix using optimised size of branch-line coupler
title_full_unstemmed A novel design of Butler matrix using optimised size of branch-line coupler
title_sort novel design of butler matrix using optimised size of branch-line coupler
publisher INOE Publishing House
publishDate 2010
url http://eprints.um.edu.my/12251/
_version_ 1643689257955491840
score 13.211869

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