Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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By M. OstadRahimi, L. Shafai, and J. LoVetri

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A double-layered Vivaldi antenna enclosed by a metallic cylindrical cavity is investigated. The antenna is correlated to the same-size circular horn antenna to exploit the equivalent modal distribution of the Vivaldi-cavity antenna. It is shown that the TM11 and TE11 are the dominant modes and the proposed antenna operates similar to a dual-mode conical horn. The antenna is fabricated and successfully tested. The radiation characteristics, mutual coupling, as well as cross-polarization level are compared to a similarly sized Vivaldi without any metallic enclosure.

M. OstadRahimi, L. Shafai, and J. LoVetri, "Analysis of a Double-Layered Vivaldi Antenna Inside a Metallic Enclosure," Progress In Electromagnetics Research, Vol. 143, 503-518, 2013.

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