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Circularly polarised square patch antenna with asymmetrical Y-shaped feed structure

Circularly polarised square patch antenna with asymmetrical Y-shaped feed structure

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© The Institution of Engineering and Technology
Published

A novel single-feed structure for circularly polarised square patch antennas is proposed and theoretically studied. The proposed antenna has a simple structure, consisting of a square radiating patch and an asymmetrical Y-shaped microstrip feed line. The two orthogonal modes with equal amplitude and ±90° out of phase are simultaneously excited by the suggested feed structure with two different branch lengths. It is shown that the proposed antenna has good circular polarisation characteristic.

Inspec keywords: polarisation; microstrip antennas; antenna feeds

Other keywords: circular polarisation; asymmetrical Y-shaped microstrip feed structure; square patch antenna

Subjects: Antenna accessories; Single antennas

References

    1. 1)
    2. 2)
    3. 3)
      • K.-F. Tong , J. Huang . New proximity coupled feeding method for reconfigurable circularly polarised microstrip ring antennas. IEEE Trans. Antennas Propag. , 7 , 1860 - 1866
    4. 4)
      • H. Iwasaki . A low-cost printed CP patch antenna for RFID smart bookshelf in library. IEEE Trans. Ind. Electron. , 5 , 1583 - 1589
    5. 5)
      • Y.-X. Guo , D.C.H. Tan . Wideband single-feed circularly polarized patch antenna with conical radiation pattern. IEEE Antennas Wirel. Propag. Lett. , 924 - 926
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