Three Coaxial-feed Axial Mode Spherical Helical Antennas

Three Coaxial-feed Axial Mode Spherical Helical Antennas

Characteristics of three coaxial-feed axial mode spherical helical antennas are analyzed by the moment method. The results indicate that gains of the one-arm spherical helical antenna and the hemispherical helical antenna vary acutely in the frequency band and their main beams float from the axial d...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Xia Dongyu, Zhang Hou, Zhang Qianyue, Wang Chong
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bandwidth
Broadband antennas
Coaxial components
Directive antennas
Frequency
Geometry
Helical antennas
Helical segment
Impedance
Moment method
Moment methods
Spherical helical antenna
Wire
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Beschreibung
Zusammenfassung:Characteristics of three coaxial-feed axial mode spherical helical antennas are analyzed by the moment method. The results indicate that gains of the one-arm spherical helical antenna and the hemispherical helical antenna vary acutely in the frequency band and their main beams float from the axial direction when the frequency higher than 1600 MHz. The two-arm hemispherical helical antenna has more than 100% pattern bandwidth and impedance bandwidth, and its gain bandwidth is -93% and the peak gain is 10.7 dB, which shows that it is of great potential value in broadband application
DOI:10.1109/CEEM.2006.257997