A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonator.

Sensors (Basel)

School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon 440-746, Korea.

Published: November 2016

This paper presents the design of a wideband circularly polarized antenna using a multiple-circular-sector dielectric resonator (DR). The DR is composed of twelve circular-sector DRs with identical central angles of 30 ∘ but with different radii. A genetic algorithm is utilized to optimize the radii of the twelve circular-sector DRs to realize wideband circular polarization. The proposed antenna is excited using an aperture-coupled feeding technique through a narrow rectangular slot etched onto the ground plane. An antenna prototype is experimentally verified. The measured -10 dB reflection and 3 dB axial ratio (AR) bandwidths are 31.39% (1.88-2.58 GHz) and 19.30% (2.06-2.50 GHz), respectively, covering the operating bands of the following systems: UMTS-2100 (2.145 GHz), WiMAX (2.3 GHz), and Wi-Fi (2.445 GHz). A measured peak gain of 7.65 dBic at 2.225 GHz and gain variation of less than 2.70 dBic within the measured 3 dB AR bandwidth are achieved. In addition, the radiation patterns of the proposed antenna are presented and discussed.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5134508PMC
http://dx.doi.org/10.3390/s16111849DOI Listing

Publication Analysis

Top Keywords

wideband circularly
8
circularly polarized
8
polarized antenna
8
antenna multiple-circular-sector
8
multiple-circular-sector dielectric
8
dielectric resonator
8
twelve circular-sector
8
circular-sector drs
8
proposed antenna
8
ghz
6

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!