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Compact wideband circularly polarized rectangular dielectric resonator antenna with dual underlaid hybrid couplers
Author(s) -
Pan Yongmei,
Leung Kwok Wa,
Lim Eng Hock
Publication year - 2010
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.25591
Subject(s) - optics , wideband , dielectric resonator antenna , physics , hybrid coupler , coaxial antenna , turnstile antenna , dielectric resonator , microwave , microstrip antenna , antenna (radio) , resonator , electrical engineering , power dividers and directional couplers , engineering , quantum mechanics
A compact wideband circularly polarized rectangular dielectric resonator antenna (DRA) with dual underlaid hybrid couplers is investigated for the first time.As no extra footprint is needed for the couplers, the proposed antenna is very compact. The dual hybrid couplers are connected to generate four quadrature signals that are fed to four sequentially rotated excitation strips stuck on the four side walls of the DRA. It is found that the 3‐dB axial‐ratio bandwidth of the proposed antenna can be as wide as 27.7%. The reflection coefficient, radiation pattern, and antenna gain of the proposed antenna are studied, and reasonable agreement between the measured and simulated results is observed. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2789–2791, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25591