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Resonant contrawound toroidal helix antenna

✍ Scribed by R. C. Hansen

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 114 KB
Volume: 29
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.1192

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✦ Synopsis

Abstract

The resonant CWTHA is examined via a moment‐method simulation. The results show a very high impedance at first resonance with a narrow bandwidth and low efficiency. At second resonance, the resistance is less than an ohm, the reactance is zero, and again, the bandwidth is narrow. The azimuth patterns are not omnidirectional, but may have a dip of 10 dB or more. The simulation shows a loop‐mode cancellation of at least 140 dB. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 408–410, 2001.

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