A constant gain ultra-wideband antenna with a multi-layer frequency selective surface

Yogesh Ranga*, Ladislau Matekovits, Andrew R. Weily, Karu P. Esselle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

An ultra-wideband (UWB) antenna with a novel multi-layer frequency selective surface (FSS) reflector is presented. A significant enhancement in the gain has been achieved in a low profile design while maintaining the excellent impedance bandwidth of the UWB antenna. The average peak gain of the antenna has been increased from 4dBi to 9.3 dBi as a consequence of the use of the FSS reflector. More importantly the gain variation within the frequency range from 3 GHz to 15 GHz is only ±0.5 dB. This is a significant improvement from ±2dB gain variation of the UWB slot antenna without the reflector. This optimized FSS reflector provides the flexibility of mounting a planar antenna close to conducting bodies, including screens and cases.

Original languageEnglish
Pages (from-to)119-125
Number of pages7
JournalProgress in Electromagnetics Research Letters
Volume38
Publication statusPublished - 2013

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