Investigation of four-arm Archimedean spiral antennas with a built-in balun for balanced multi-mode operations in GPS applications

Investigation of four-arm Archimedean spiral antennas with a built-in balun for balanced multi-mode operations in GPS applications

ABSTRACT Multi‐mode four‐arm Archimedean spiral antennas, backed by partially‐filled absorber, are investigated. A low‐profile structure with an embedded balun is realized to produce balanced spiral modes for both broadside and conical radiation patterns over GPS frequency bands. Prototype antennas...

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Veröffentlicht in:Microwave and optical technology letters 2016-04, Vol.58 (4), p.762-767
Hauptverfasser: Mehrabani, Ali M., Shafai, Lotfollah
Format: Artikel
Sprache:eng
Schlagworte:
Antennas
Balancing
Baluns
circular polarization
Computation
Frequency bands
GPS systems
higher order modes
low-profile antenna
Microwaves
Prototypes
Spiral antennas
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Zusammenfassung:ABSTRACT Multi‐mode four‐arm Archimedean spiral antennas, backed by partially‐filled absorber, are investigated. A low‐profile structure with an embedded balun is realized to produce balanced spiral modes for both broadside and conical radiation patterns over GPS frequency bands. Prototype antennas are developed and measured results are in excellent agreement with computed ones. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:762–767, 2016
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.29669