A WIDEBAND TWIN-DIAMOND-SHAPED CIRCULARLY POLARIZED PATCH ANTENNA WITH GAP-COUPLED FEED | Zendy

LI Xue-hui | Zendy; Xueshi Ren | Zendy; Yingzeng Yin | Zendy; Lu Chen | Zendy; Zedong Wang | Zendy

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A WIDEBAND TWIN-DIAMOND-SHAPED CIRCULARLY POLARIZED PATCH ANTENNA WITH GAP-COUPLED FEED

Author(s) -

LI Xue-hui,

Xueshi Ren,

Yingzeng Yin,

Lu Chen,

Zedong Wang

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier13030301

Subject(s) - wideband , patch antenna , diamond , turnstile antenna , circular polarization , materials science , coaxial antenna , microstrip antenna , optoelectronics , antenna (radio) , optics , physics , telecommunications , composite material , engineering , microstrip

A novel twin-diamond-shaped antenna is presented for wideband circularly polarized (CP) radiation. By introducing a twin-diamond-shaped patch and a gap-coupled feed structure, a left- handed circularly polarized (LHCP) antenna in bore-sight direction is obtained. The gap-coupled feed structure consists of a horizontal microstrip arm of approximately 0.285‚0 at the centre frequency and two small diamonds, which greatly contributes to wideband characteristics. The experimental bandwidths of 10-dB return loss and 3-dB axial ratio (AR) for the antenna prototype are about 20% and 9.2%, respectively. The measured gain is more than 6.8dBi over the entire bandwidth.

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