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Design of dual‐band quadrifilar spiral antennas for satellite‐mobile handsets
Author(s) -
AbdAlhameed R. A.,
Zhou D.,
See C. H.,
Excell P. S.,
Abusitta M. M.,
Alkhambashi M. S.,
McEwan N. J.
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25090
Subject(s) - ground plane , engineering , multi band device , electrical engineering , spiral antenna , antenna (radio) , electronic engineering , stripline , spiral (railway) , telecommunications link , satellite , communications satellite , microwave , coaxial antenna , telecommunications , microstrip antenna , aerospace engineering , mechanical engineering
A novel quadrifilar spiral antenna is proposed for use in personal communications mobile terminals exploiting the “big low earth orbit” (big‐LEO) satellite system (uplink 1.61–1.63 GHz; downlink 2.48–2.5 GHz). Feeding of the antenna from the outer periphery is proposed, to avoid the complexity and space requirements of a centre feed; an externally fed antenna can also be fed either by coaxial cables or stripline. Moreover, the hybrid phasing network and the matching network (if required) can be located outside and possibly printed in the same plane as the antenna structure. Versions of the design were investigated using the method of moments and in hardware realizations. These had a finite ground plane with air dielectric between the spirals and the ground plane. Performance suitable for satellite mobile system applications was demonstrated, including dual‐band matching. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:987–990, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25090