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http://dx.doi.org/10.6109/jkiice.2021.25.11.1687

Design and Implementation of 2.4 GHz Beamforming antenna using 4×4 Butler Matrix  

Kim, Young-Jin (Department of Automatic System, Chosun College of Science & Technology)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.25, no.11, 2021 , pp. 1687-1695 More about this Journal
Abstract
In this paper, it is designed and analyzed the beamforming antenna using the butler matrix. The operating frequency of the proposed beamforing antenna is ISM band of 2.4 GHz band and the component of the beamforing antenna consisted of a 1×4 array antenna and a 4×4 butler matrix. Each output port of 4×4 butler matrix outputs the signal having a different phase, it is provided to each input port of 1×4 array antenna. The beamforming antenna with four output ports forms a total of four beams. In order to analyze the radiation pattern of the beamforming antenna, it was provided by switching the signal to the input port and proceeded the Individual analysis for the input port 1 to 4. The main beams of the proposed beamforming antenna were formed in the -12°, 40°, -40° and 12° directions according to each input port, respectively.
Keywords
Beamforming antenna; Array antenna; Butler matrix; Microstrip patch antenna;
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