A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonatoropen access
- Authors
- Trinh-Van, S.[Trinh-Van, S.]; Yang, Y.[Yang, Y.]; Lee, K.-Y.[Lee, K.-Y.]; Hwang, K.C.[Hwang, K.C.]
- Issue Date
- Nov-2016
- Publisher
- MDPI AG
- Keywords
- Aperture-coupled feeding; Circular polarization; Dielectric resonator antenna; Multiple-circular-sector structure; Wide bandwidth
- Citation
- SENSORS, v.16, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS
- Volume
- 16
- Number
- 11
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/34489
- DOI
- 10.3390/s16111849
- ISSN
- 1424-8220
- Abstract
- 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 degrees 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.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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