Circularly polarized array antenna with corporate-feed network and series-feed elements

In this paper, corporate-feed circularly polarized microstrip array antennas are studied. The antenna element is a series-feed slot-coupled structure. Series feeding causes sequential rotation effect at the element level. Antenna elements are then used to form the subarray by applying sequential rot...

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Veröffentlicht in:	IEEE transactions on antennas and propagation 2005-10, Vol.53 (10), p.3288-3292
Hauptverfasser:	Lu, Ko Han, Chang, The-Nan
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna Antenna arrays Antennas Applied sciences Arrays Bandwidth Circularity Dielectric losses Dielectric substrates Exact sciences and technology Feeding Feeds Frequency Gain Impedance microstrip Microstrip antenna arrays Microstrip antennas Networks Noise levels Optical polarization phase Radiocommunications Telecommunications Telecommunications and information theory
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Beschreibung
Zusammenfassung:	In this paper, corporate-feed circularly polarized microstrip array antennas are studied. The antenna element is a series-feed slot-coupled structure. Series feeding causes sequential rotation effect at the element level. Antenna elements are then used to form the subarray by applying sequential rotation to their feeding. Arrays having 4, 16, and 64 elements were made. The maximum achieved gains are 15.3, 21, and 25.4 dBic, respectively. All arrays have less than 15 dB return loss and 3 dB axial ratio from 10 to 13 GHz. The patterns are all quite symmetrical.
ISSN:	0018-926X 1558-2221
DOI:	10.1109/TAP.2005.856331