A Compact Switched Beam Antenna Array for ISM Band

  • Tri Nguyen Production and Improvement of Technology Institute
  • Bui Thi Duyen Electronic Power University
  • Hoang Thi Phuong Thao Electronic Power University

Abstract

This paper proposes the switched beam antenna array at the center frequency of 2.45GHz with a bandwidth of 187 MHz, from 2.32 GHz to 2.51 GHz. The phase shifter of antenna utilizes a 4×4 planar Butler matrix with phase differences between its outputs of  ±135° and ±45° to obtain four the different main beam directions. The proposed design is fully described including the patch antenna element, the antenna array, the phase shifter that forms the completed antenna array. The antenna array achieves a gain max up to 7 dBi, and the angles of the main beam directions of -41°, -12°, +15°, +48° in a horizontal plane. The beamwidth of the four main beams is from 26°  to 31.8° in E-plane and from 38.5° to 55.4° in H-plane. The advantage of the antenna is the planar structure and compact dimension of 200×230mm2. The proposed antenna is suitable for ISM band.

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References

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Published
2021-06-29
How to Cite
NGUYEN, Tri; DUYEN, Bui Thi; PHUONG THAO, Hoang Thi. A Compact Switched Beam Antenna Array for ISM Band. Journal of Science and Technology: Issue on Information and Communications Technology, [S.l.], v. 19, n. 6.2, p. 1-5, june 2021. ISSN 1859-1531. Available at: <http://ict.jst.udn.vn/index.php/jst/article/view/134>. Date accessed: 19 jan. 2022. doi: https://doi.org/10.31130/ict-ud.2021.134.