Broadband circularly polarized patch antenna with gap-coupled feed and resistor loading

Broadband circularly polarized patch antenna with gap-coupled feed and resistor loading

ABSTRACT A broadband circularly polarized patch antenna with suspended structure is proposed. The suspended patch has a bow‐tie structure and a gap‐coupled feed. By connecting a resistor load to another gap‐coupled feed port at the opposite position, a wide impedance and axial ratio (AR) bandwidths...

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Veröffentlicht in:International journal of RF and microwave computer-aided engineering 2014-09, Vol.24 (5), p.587-593
Hauptverfasser: Ding, Kang, Yu, Tong-Bin, Qu, De-Xin, Cao, Wen-Quan, Zhang, Wei
Format: Artikel
Sprache:eng
Schlagworte:
Banded structure
Bandwidth
Broadband
broadband antenna
Circularity
circularly polarized
gap-coupled feed
Impedance
Microwaves
Patch antennas
resistor load
Resistors
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Zusammenfassung:ABSTRACT A broadband circularly polarized patch antenna with suspended structure is proposed. The suspended patch has a bow‐tie structure and a gap‐coupled feed. By connecting a resistor load to another gap‐coupled feed port at the opposite position, a wide impedance and axial ratio (AR) bandwidths are obtained. The proposed design has a very simple antenna structure with an impedance bandwidth of 44.5% and a 3‐dB AR bandwidth of 33.8%, respectively. The results show that the bandwidth of the patch antenna is successfully broadened using the suspended configuration, gap‐coupled feed, and resistor loading. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:587–593, 2014.
ISSN:1096-4290
1099-047X
DOI:10.1002/mmce.20802