Abstract
AbstractThe bandwidth of a resonant quadrifilar helix antenna (QHA) is shown to be strongly dependent on the design of the feed network. In this paper, we compare the impedance and radiation‐pattern performance of two QHAs driven by different feed arrangements. A qualitative explanation for the difference in the behaviour of the antenna is given by observing the amplitude and phase distribution of the current in the helices. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 11–15, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20886
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