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Design of a 28 GHz Switched Beamforming Antenna System Based on 4×4 Butler Matrix
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 Title & Authors
Design of a 28 GHz Switched Beamforming Antenna System Based on 4×4 Butler Matrix
Park, Seongchun; Kim, Seunghyeon; Sohn, Jihoon; Shin, Hyunchol;
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In this paper, a switched beamforming antenna system at 28 GHz frequency band is described for generation wireless communication. The butler matrix is used as a beamforming system and it produces linear spaced phase difference at four output ports. Array antenna is designed that can be steered in desired 4 different directions 28 GHz frequency band. Operation of designed butler matrix that composed of couplers and feedline is explained. The antenna system is designed in RO3003 substrate that has a height of 5 mil and dielectric constant of 3. The size of butler matrix is and size of array antenna is . This system can be steered from to and minimum sidelobe level is 12.9 dB.
Beamforming;Switched-Beamforming;Millimeter-Wave;Butler Matrix;Array Antenna;
 Cited by
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