TWO DIMENSIONAL SWITCHED BEAM ANTENNA BASED ON CASCADED BUTLER MATRIX BEAMFORMING NETWORK

Authors

  • SI Orakwue DEPARTMENT OF ELECTRICAL ELECTRONIC ENGINEERING, UNIV. OF PORT-HARCOURT, RIVERS STATE, NIGERIA
  • R Ngah WIRELESS COMMUNICATION CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM), 81310 SKUDAI, JOHOR, MALAYSIA

Keywords:

Cascaded Butler matrix, Beamforming Network, switched-beam antenna, 5G

Abstract

This paper presents a low cost, two dimensional (2-D) millimetre wave switched-beam array antenna attained by feeding a planar array antenna with a cascaded 4 x 4 Butler matrix (BM) beam forming network (BFN). To minimise the surface current, ensure low cost and ease fabrication, a single layer has been implemented. The prototype is fabricated and measured results presented. According to the results, the maximum beam scanning of from -41? to +42?, and a maximum antenna gain of 13.8 dBi are obtained in the x-z plane. While the maximum beam scanning of from -43? to +41? and the maximum antenna gain of 13.7 dBi are realized in the y-z plane. With a single pole multiple throw switches, switching the various matrix terminals on the BM in the horizontal plane gives the beams in the x-z plane, while switching the BM in the vertical plane gives the beams in the y-z plane. All experimental and numerical results are in good agreement which can be practically used for fifth generation (5G) wireless systems.

 

http://dx.doi.org/10.4314/njt.v38i4.25

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Published

2019-09-30

Issue

Section

Computer, Telecommunications, Software, Electrical & Electronics Engineering

How to Cite

TWO DIMENSIONAL SWITCHED BEAM ANTENNA BASED ON CASCADED BUTLER MATRIX BEAMFORMING NETWORK. (2019). Nigerian Journal of Technology, 38(4), 1003-1009. https://nijotech.com/index.php/nijotech/article/view/2139