Dual-Band Huygens Source Antennas With Partially Reflective Surfaces
Journal
Radio Science
Journal Volume
57
Journal Issue
11
Date Issued
2022-11-01
Author(s)
Abstract
This paper presents an antenna architecture from Huygens sources placed in a middle cavity formed by a metal reflector and a partially reflective surface (PRS) of dielectric superstrates. The proposed antenna is excited by a pair of cross-feedings to produce two frequency resonances in reflection coefficients and radiate unidirectional patterns. In contrast to conventional designs, the proposed PRS-supported Huygens source antenna may effectively broaden the bandwidth and increase radiation gains with a low profile, including low cost. Simulation results show broadband radiation characteristics at 2.45 and 5 GHz bands, where the impedance bandwidths are in the ranges of 2.4–2.5 GHz and 4.8–5.8 GHz, respectively. In addition, the measurement results of the antenna prototype validate the simulation results in terms of reflection coefficients and radiation patterns. It is found that the gains are 5.0 dBi (2.45 GHz) and 3.0 dBi (5 GHz), where simulation and measurement results are agreed well for practical applications of wireless communications.
Subjects
dual-band | gain enhancement | Huygens source antennas | partially reflective surfaces
SDGs
Type
journal article