Wideband Circularly Polarized SIW Antenna Array That Uses Sequential Rotation Feeding

A wideband right-handed circularly polarized (CP) substrate integrated waveguide- (SIW-) based diamond ring-slot antenna array at the X-band is presented in this study. The array consists of four elements that exhibit wideband impedance matching characteristics and good radiation performance. The ar...

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Bibliographic Details
Published in:International journal of antennas and propagation 2014-01, Vol.2014 (2014), p.1-8
Main Authors: Fan, Fang-Fang, Wang, Wei, Yan, Ze-Hong
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Arrays
Bandwidth
Circularity
Efficiency
Feeding
Satellite communications
Wideband
X-band
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Summary:A wideband right-handed circularly polarized (CP) substrate integrated waveguide- (SIW-) based diamond ring-slot antenna array at the X-band is presented in this study. The array consists of four elements that exhibit wideband impedance matching characteristics and good radiation performance. The array also employs a sequential rotation feeding method to achieve the wideband axial ratio (AR) bandwidth. The feeding network is based on the SIW power divider with a delay line related to sequential rotation feeding. To validate our design, an antenna array is fabricated and measured. The measured impedance and AR bandwidths are 19.2% ( VSWR < 2 ) and 14.1% ( AR < 3 dB), respectively. Moreover, the antenna has a stable CP peak gain of more than 12 dBic from 10.1 GHz to 10.7 GHz.
ISSN:1687-5869
1687-5877
DOI:10.1155/2014/534539