Wide-Beamwidth Uni-Lateral Dielectric Resonator Antenna Using Higher-Order Mode

Lei Guo; Kwok Wa Leung; Nan Yang

doi:10.1109/LAWP.2018.2881534

Author(s)

Lei Guo
Kwok Wa Leung
Nan Yang

Related Research Unit(s)

Detail(s)

Original language	English
Pages (from-to)	93-97
Journal / Publication	IEEE Antennas and Wireless Propagation Letters
Volume	18
Issue number	1
Online published	15 Nov 2018
Publication status	Published - Jan 2019

Link(s)

DOI	DOI https://doi.org/10.1109/LAWP.2018.2881534 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85056589767&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(1da28f66-ea2c-4548-9515-454c83e206cb).html

Abstract

For the first time, a uni-lateral rectangular dielectric resonator antenna (DRA) is designed using two DR modes, namely the fundamental TE^x_δ₁₁ mode and higher-order TE^x₂_δ₁ mode. The former and latter provide the broadside and quasi-omnidirectional radiation patterns, respectively. By combining the radiation fields of the two resonant modes, uni-lateral radiation with wide 3-dB beamwidths can be obtained. For demonstration, a uni-lateral rectangular DRA was designed in 2.4-GHz WLAN band. Across the WLAN band, the DRA has a measured front-to-back ratio (FTBR) of higher than 15 dB. It is found that the measured maximum FTBR of the DRA is 36.6 dB, whereas the measured 3-dB beamwidths of the two principal radiation planes are both wider than 174°.