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Dual-band patch antenna for mobile satellite systems

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2 Author(s)
R. Lelaratne ; Electron. Eng. Labs., Kent Univ., Canterbury, UK ; R. J. Langley

The launch of new mobile satellite communication links for telephone and data applications demands development of small, low-profile, low-cost antennas. A single-layer, multi-band microstrip patch antenna is described, which operates over the frequency ranges of the Iridium and Globalstar satellite communication systems, 1.6 and 2.5 GHz. The antenna excites the TM10 and TM30 resonant modes which can operate with either dual linear polarisation or either hand of circular polarisation. The unwanted TM20 mode is suppressed using a combination of slots cut into the patch and by shaping the corners of the patch. Frequency band separations can be varied significantly from 1.3 to 2.5×the lower frequency. Data for designing the patch dimensions is presented. The return loss, impedance characteristics and radiation patterns are presented for a practical design

Published in:

IEE Proceedings - Microwaves, Antennas and Propagation  (Volume:147 ,  Issue: 6 )