A compact widebeam circularly polarized antenna with wide impedance and axial ratio bandwidths | Zendy

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A compact widebeam circularly polarized antenna with wide impedance and axial ratio bandwidths

Author(s) -

Li Guang,

Zhang Fushun

Publication year - 2020

Publication title -

international journal of rf and microwave computer‐aided engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.335

H-Index - 39

eISSN - 1099-047X

pISSN - 1096-4290

DOI - 10.1002/mmce.22015

Subject(s) - axial ratio , beamwidth , optics , physics , ground plane , turnstile antenna , dipole antenna , radiation pattern , bandwidth (computing) , coaxial antenna , antenna (radio) , circular polarization , telecommunications , microstrip , engineering

A compact widebeam circularly polarized antenna with wide impedance and axial ratio (AR) bandwidths is proposed in this study. The antenna is composed of a pair of crossed dipoles, four sequentially rotated parasitic elements, a slotted ground plane with four vertical plates, and four inverted L‐shaped structures. A prototype is fabricated and measured. An impedance bandwidth ( S 11 < −10 dB) of 102.4% and a 3‐dB AR bandwidth of 83.5% are measured. And half‐power beamwidth is more than 120° over the whole operating band. Radiation patterns are symmetrical and identical in both principal planes. The compact size of antenna is 0.42 λ 0 × 0.42 λ 0 × 0.16 λ 0 .

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