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research article
Broadband Fabry-Pérot radiation based on a non-Foster cavity boundary
Fabry-Perot (FP) cavities having at least one partially reflective surface are widely used as compact and efficient high-directivity radiators. However, they inherently suffer from very narrow directivity bandwidths around the FP resonance. Here it is shown that this constraint can be overcome by using an active non-Foster cavity boundary behaving as a series negative LC tank circuit. Analytical and full-wave numerical results reveal the possibility of nearly tenfold improvement of - 1 dB directivity bandwidth while preserving the original overall antenna size and directivity of the antenna.
Type
research article
Web of Science ID
WOS:000318544600004
Authors
Publication date
2013
Published in
Volume
49
Issue
4
Start page
239
End page
240
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
December 20, 2012
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