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Investigation of microstrip‐fed low‐profile broadband circularly polarized rectangular dielectric resonator antennas
Author(s) -
Zhang Bohan,
Zhang Jingwei,
Liu Chengguo,
Wu Zhi
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30827
Subject(s) - dielectric resonator antenna , broadband , axial ratio , circular polarization , microstrip antenna , materials science , optics , microstrip , resonator , dielectric , bandwidth (computing) , dielectric resonator , offset (computer science) , optoelectronics , acoustics , physics , telecommunications , antenna (radio) , engineering , computer science , programming language
A microstrip‐fed low‐profile broadband circularly polarized rectangular dielectric resonator antenna (RDRA) suitable for WLAN applications based on IEEE 802.11.a standards was designed and tested. In addition, a new iterative method for the estimation of resonance frequency with the consideration of the effect of the substrate was investigated in this article. The RDRA exhibits broadband and circular polarization (CP) by utilizing the asymmetrical offset feeding mechanism to excite two orthogonal degenerate modes (TE δ 11 xandTE 1 δ 1 y). The RDRA provides the impedance bandwidths (| S 11 | < −10 dB) of 10.2% and the axial ratio (AR) bandwidth (AR < 3 dB) of 1.8%. Good agreements between the simulated and measured results have been obtained.