The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of 5.8GHz Band 4×4 Butler Matrix using Commercial 90° Hybrid Coupler

상용 90도 하이브리드 커플러를 이용한 5.8GHz 대역 4×4 버틀러매트릭스 설계

  • Received : 2014.05.14
  • Accepted : 2014.08.05
  • Published : 2014.09.01
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Abstract

In this paper, 5.8GHz band $4{\times}4$ Butler matrix is designed using easily accessible commercial $90^{\circ}$ hybrid coupler and semirigid coaxial cable as a transmission line. This Butler matrix is very flexible to changes of antenna system specification like a frequency band because $90^{\circ}$ hybrid coupler changing is all to do. The result of design is the distance of $2{\times}2$ array antenna element is $\sqrt{2}{\lambda}/4$, the 4 beam directions are diagonal of array antenna and phase shifter is not necessary. The beam width is roughly $25^{\circ}$ narrower because of array antenna geometry and the side lobe is about 10dB higher partially than theoretical beam pattern. But the overall beam pattern is similar with theoretical beam. This Butler matrix can be applied to switching beam antenna of 5.8GHz band Wi-Fi and WAVE system.

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References

  1. Chia-Chan Chang; Ruey-Hsuan Lee; Ting-Yen Shih, "Design of a Beam Switching Steering Butler Matrix for Phased Array System" Antennas and Propagation, IEEE Transactions on Vol. 58, Issue: 2, 2010, pp.367-374 https://doi.org/10.1109/TAP.2009.2037693
  2. Cetinoneri, B.; Atesal, Y.A.; Rebeiz, G.M, "An 8${\times}$8 Butler Matrix in 0.13 um CMOS for 5-6GHz Multibeam Applications" Microwave Theory and Techniques, IEEE Transactions on Vol. 59, Issue: 2, 2011 , pp.295-301 https://doi.org/10.1109/TMTT.2010.2097751
  3. J. Butler and R. Lowe, "Beam-Forming Matrix Simplifies Design of Electronically Scanned Antennas," Electronic Design, pp.170-173, April 12, 1961.
  4. J. Blass, "Multidirectional Antenna: A New Approach to Stacked Beams," IRE International Conference Record, Vol. 8, Part 1, 1960.
  5. A. W. Rudge, K. Milne, A. D. Olver and P. Knight, The Handbook of Antenna Design, Vol. 2, Peter Peregrinus, London pp.323-328, 1983.
  6. T. A. Denidni and T. E. Libar, "Wide band four-port Butler matrix for switched multibeam antenna arrays," in Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '03), vol. 3, pp. 2461-2464, Beijing, China, September 2003.
  7. Pozar D.M: "Microwave Engineering", Third edition, Wiley, 2005.
  8. Fooks, E. H. Microwave engineering using microstrip circuits, Prentice Hall New York 1990