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Dual-frequency microstrip antenna with dual circular polarisation

Dual-frequency microstrip antenna with dual circular polarisation

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  • Author(s): C.-H. Cai 1 ; J.-S. Row 1 ; K.-L. Wong 2
    • View affiliations
    • Affiliations: 1: Department of Electrical Engineering, National Changhua University of Education, Chang-Hua, Taiwan, Republic of China
      2: Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, Republic of China
  • Source: Volume 42, Issue 22, 26 October 2006, p. 1261 – 1262
    DOI:  10.1049/el:20062537 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Published

A single-feed dual-frequency microstrip patch antenna that can produce dual circular polarisations (CP) is presented. The microstrip antenna has an annular-ring patch and is excited by an L-shaped microstrip line through the coupling of a ring slot in the ground plane. The occurrence of the dual CP is because the magnetic currents circulating along the ring slot at two specific frequencies have opposite flowing directions. Both simulated and measured results are provided to validate the CP performance of the proposed antenna.

Inspec keywords: microstrip antennas; multifrequency antennas; antenna feeds; electromagnetic wave polarisation; microstrip lines

Other keywords: patch antenna; dual circular polarisation; single-feed antenna; magnetic currents; ring slot; dual-frequency antenna; microstrip antenna; L-shaped microstrip line

Subjects: Antenna accessories; Single antennas; Waveguides and microwave transmission lines

References

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    4. 4)
      • C.W. Su , J.S. Row , J.F. Wu . Design of a single-feed dual-frequency microstrip antenna. Microw. Opt. Technol. Lett. , 2 , 114 - 116
    5. 5)
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