CIRCULARLY POLARIZED SUBSTRATE INTEGRATED WAVEGUIDE CAVITY-BACKED ANTENNA WITH ENHANCED BANDWIDTH FOR WIDEBAND WIRELESS APPLICATIONS | Zendy

Li Tian | Zendy; FuShun Zhang | Zendy; Fei Gao | Zendy; Yan-Li Guo | Zendy

Open Access

CIRCULARLY POLARIZED SUBSTRATE INTEGRATED WAVEGUIDE CAVITY-BACKED ANTENNA WITH ENHANCED BANDWIDTH FOR WIDEBAND WIRELESS APPLICATIONS

Author(s) -

Li Tian,

FuShun Zhang,

Fei Gao,

Yan-Li Guo

Publication year - 2016

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc16071104

Subject(s) - wideband , bandwidth (computing) , wireless , turnstile antenna , optoelectronics , waveguide , substrate (aquarium) , materials science , optics , physics , antenna (radio) , telecommunications , coaxial antenna , computer science , microstrip antenna , geology , oceanography

A circularly polarized substrate integrated waveguide (SIW) cavity-backed antenna with the feasibility of obtaining a wide bandwidth is proposed and demonstrated. Fed by a modified invertedT stripline, the proposed double-layered stacked antenna, consisting of an improved circular SIW cavity and a conventional perturbed circular patch radiator, is designed, analyzed and fabricated. Good agreement between simulated and measured results is observed. Simulation and measurement results reveal that the proposed antenna can provide an impedance bandwidth of 22.1% (4.94–6.17 GHz) and a 3-dB axial ratio (AR) bandwidth of 18.7% (5–6.03 GHz). Additionally, within the effective circular polarization (CP) bandwidth of 18.7% (5–6.03 GHz), the proposed antenna has gains from 4.3 dBic to 7.1 dBic with an average gain of 5.9 dBic. The measured CP bandwidth of 18.7% (5–6.03 GHz) not only meets the need for certain Wi-Fi (5.2/5.8 GHz) or WiMAX (5.5 GHz) band communication application, but also provides the potential to implement multiservice transmission.

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