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Circularly polarized ceramics dielectric resonator antenna excited by Y‐shaped microstrip
Author(s) -
Li LiXian,
Zhong ShunShi,
Xu SaiQing,
Chen MinHua
Publication year - 2009
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.24653
Subject(s) - dielectric resonator antenna , microstrip antenna , beamwidth , optics , turnstile antenna , dielectric resonator , materials science , coaxial antenna , axial ratio , microstrip , circular polarization , physics , optoelectronics , resonator , antenna (radio) , electrical engineering , engineering
A circularly polarized ceramics dielectric resonator antenna fed by a Y‐shaped microstrip is proposed and analyzed. The CP design is achieved by simply adjusting the lengths and widths of two quadrate shorted stubs. The antenna is compact in structure, whose radius is only 4.5 mm. The reflection, polarization, and radiation characteristics of the antenna are studied. For the proposed antenna, with relative dielectric constant of resonator ε r 1 = 38, a measured impedance bandwidth of 6.8%, a measured minimum axial ration of 0.8 dB, and a wide beamwidth of 164°are achieved. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2416–2418, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24653