Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna
Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, Korea
Author to whom correspondence should be addressed.
Received: 24 October 2018 / Revised: 9 November 2018 / Accepted: 9 November 2018 / Published: 12 November 2018
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In this paper, a triple-band dual-sense circularly polarized (CP) hybrid dielectric resonator antenna is proposed. A modified hexagonal dielectric resonator (DR) is top-loaded with a square microstrip ring (SMR). A vertical-tapered-strip connected to a 50-
microstrip line is used to excite the proposed antenna. It is found that the lower and central CP bands correspond to left-handed circular polarization and are produced by the TM
modes of the SMR and modified hexagonal DR, respectively. The upper CP band is formed by the combination of the quasi-TM
mode of the SMR and quasi-TE
mode of the DR that exhibits right-handed circular polarization. The measurement results of the fabricated prototype show triple-band response for |S
−10 dB with impedance bandwidths (IBWs) of 17.4% (1.75–2.03 GHz), 28.13% (2.23–2.96 GHz), and 2.97% (3.65–3.76 GHz) in the lower, central, and upper bands, respectively. The measured 3 dB axial ratio bandwidths lying within −10 dB IBWs are 3.69% (1.86–1.93 GHz), 5.46% (2.67–2.82 GHz), and 2.15% (3.68–3.76 GHz) along with the peak gains of 5 dBic, 5.28 dBic, and 2.36 dBic in the lower, central, and upper bands, respectively.
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MDPI and ACS Style
Altaf, A.; Seo, M. Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna. Sensors 2018, 18, 3899.
Altaf A, Seo M. Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna. Sensors. 2018; 18(11):3899.
Altaf, Amir; Seo, Munkyo. 2018. "Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna." Sensors 18, no. 11: 3899.
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