NOVEL APERTURE-COUPLED MICROSTRIP-LINE FEED FOR CIRCULARLY POLARIZED PATCH ANTENNA | Zendy

Hau Wah Lai | Zendy; Ka Ming Mak | Zendy; Ka Fai Chan | Zendy

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NOVEL APERTURE-COUPLED MICROSTRIP-LINE FEED FOR CIRCULARLY POLARIZED PATCH ANTENNA

Author(s) -

Hau Wah Lai,

Ka Ming Mak,

Ka Fai Chan

Publication year - 2014

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/pier13101803

Subject(s) - patch antenna , microstrip antenna , microstrip , feed line , turnstile antenna , optics , antenna feed , circular polarization , physics , coaxial antenna , materials science , antenna (radio) , optoelectronics , telecommunications , computer science

—A wideband circularly polarized patch antenna is proposed. The wide impedance and axial ratio bandwidths are achieved by the proposed feeding mechanism, which entails the use of a circular microstrip line coupling through four Γ-shaped slots to generate four sequentially phased sources to excite the single layer patch antenna. The proposed antenna can provide an SWR bandwidth of over 16.5% (for SWR < 1.5) and an axial-ratio bandwidth of 13.3% (for AR < 3 dB). The performance of the antenna has been confirmed by both measurement and simulation. The antenna gain is enhanced and backlobe radiation is reduced by placing a reflector at an optimized location.

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