Wideband Circularly Polarized Substrate-Integrated Embedded Dielectric Resonator Antenna for Millimeter-Wave Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Article number8826597
Pages (from-to)1145-1150
Journal / PublicationIEEE Transactions on Antennas and Propagation
Volume68
Issue number2
Online published6 Sep 2019
Publication statusPublished - Feb 2020

Abstract

A singly fed wideband circularly polarized (CP) substrate-integrated dielectric resonator antenna (SIDRA) is proposed for millimeter-wave (mm-wave) applications. The SIDRA consists of an inner cylindrical dielectric resonator (DR), an outer ring DR, and a substrate-integrated waveguide (SIW) cavity. To generate CP fields, a cross-slot formed by two rectangular slots with different lengths is utilized to feed the DRA at its bottom. It has been found that owing to the embedded structure, the fundamental HEM11δ mode of the inner DR and the higher order HEM12δ+1 mode of the entire DR can be excited simultaneously, at adjacent frequencies. Moreover, owing to the different loading effects of the two feeding slots, the resonance frequencies of the nearly degenerate DR modes excited by the two slots are slightly different from each other. The two nearly degenerate modes lead to the wide impedance and axial ratio (AR) bandwidths of 34.6% and 30%, respectively. In addition, due to the surrounding SIW cavity, the directivity of the antenna is greatly improved as compared with that of the isolated counterpart, with the maximum gain given by 8.15 dBic.

Research Area(s)

  • Circularly polarized (CP) antenna, dielectric resonator antenna (DRA), millimeter-wave (mm-wave) antenna, substrate-integrated antenna, wideband antenna

Citation Format(s)

Wideband Circularly Polarized Substrate-Integrated Embedded Dielectric Resonator Antenna for Millimeter-Wave Applications. / Yang, Mei-Di; Pan, Yong-Mei; Sun, Yu-Xiang; Leung, Kwok-Wa.

In: IEEE Transactions on Antennas and Propagation, Vol. 68, No. 2, 8826597, 02.2020, p. 1145-1150.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal