Broadband Circularly Polarized Crossed-Dipole Antenna With a Single Asymmetrical Cross-Loop

This letter presents a broadband cavity-backed circularly polarized (CP) crossed-dipole antenna encircled by a novel asymmetrical cross-loop. By using the single parasitic cross-loop, the antenna has a simple structure and a compact configuration. More importantly, it produces additional two CP mode...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 16; pp. 3184 - 3187
Main Authors Feng, Guirong, Chen, Lei, Xue, Xingsi, Shi, Xiaowei
Format Journal Article
LanguageEnglish
Published IEEE 01.01.2017
Subjects
Antenna measurements
Bandwidth
Broadband
Broadband antennas
Broadband communication
circularly polarized (CP)
crossed dipole
Dipole antennas
loop antenna
Substrates
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Summary:This letter presents a broadband cavity-backed circularly polarized (CP) crossed-dipole antenna encircled by a novel asymmetrical cross-loop. By using the single parasitic cross-loop, the antenna has a simple structure and a compact configuration. More importantly, it produces additional two CP modes. The suitable combination of the crossed dipole and the crossloop provides broadband CP operation. The measured results show that the proposed antenna with an overall dimension of 1.1λ 0 × 1.1λ 0 × 0.28λ 0 (in terms of the CP center frequency) features broadband CP characteristics of an impedance bandwidth with S 11 <; -10 dB from 3.14 to 6.34 GHz (67.5%) and a 3 dB axialratio bandwidth from 3.83 to 6.62 GHz (53.4%). A unidirectional right-hand circular-polarized radiation pattern with a peak gain of 10.62 dBi is achieved over the CP operating band.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2767700