Omnidirectional circularly-polarised microstrip patch antenna | Zendy

Adam Narbudowicz | Zendy; Xiulong Bao | Zendy; Max J. Ammann | Zendy

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Omnidirectional circularly-polarised microstrip patch antenna

Author(s) -

Adam Narbudowicz,

Xiulong Bao,

Max J. Ammann

Publication year - 2012

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2012.0735

Subject(s) - optics , axial ratio , microstrip antenna , omnidirectional antenna , patch antenna , helical antenna , microstrip , antenna (radio) , physics , coaxial antenna , diagonal , circular polarization , telecommunications , computer science , mathematics , geometry

An omnidirectional circularly-polarised patch antenna is proposed. The antenna radiates right-handed circular-polarisation with an average axial ratio of 2.3 dB over a full 360° . A shallow diagonal CPW inset-feed was used to achieve good matching to the back-to-back coupled patches, providing a measured S11<;-15 dB at the centre frequency. The measured cross-polar performance is better than 13 dB and the realised gain variation is ~3 dB in the plane normal to the substrate.

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