Compact circularly-polarised circular microstrip antenna with cross-slot and peripheral cuts

Compact circularly-polarised circular microstrip antenna with cross-slot and peripheral cuts

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Novel compact circular-polarisation (CP) operation of a circular microstrip antenna, with a cross-slot in the patch centre and a pair of peripheral cuts at opposite sides of the patch boundary, is proposed and experimentally studied. For operation at a fixed frequency, the proposed antenna, using a single probe feed, can have an antenna size reduction of ~ 20%, as compared to regular-size CP operation of a circular microstrip antenna. Details of the experimental results are presented and analysed.


    1. 1)
      • H. Iwasaki . A circularly polarized small-size microstrip antenna with a crossslot. IEEE Trans. Antennas Propag. , 1399 - 1401
    2. 2)
      • K.L. Wong , J.Y. Wu . Single-feed small circularly-polarised square microstrip antenna. Electron. Lett. , 22 , 1833 - 1834
    3. 3)
      • K.P. Yang , K.L. Wong . Inclined-slot-coupled compact dual-frequencymicrostrip antenna with cross-slot. Electron. Lett. , 4 , 321 - 322

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