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Double annular‐ring dielectric resonator antenna for ultra‐wideband application
Author(s) -
Ruan YuFeng,
Guo YongXin,
Shi XiangQuan
Publication year - 2007
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.22140
Subject(s) - dielectric resonator antenna , wideband , passband , microwave , resonator , optics , dielectric resonator , antenna (radio) , return loss , electrical engineering , radiation pattern , dielectric , physics , materials science , optoelectronics , engineering , telecommunications , band pass filter
A new dielectric resonator antenna (DRA) is proposed in this article for ultra‐wideband (UWB) application. A larger annular‐ring DRA is placed concentrically outside a smaller one to form a double annular‐ring DRA. The antenna is operating at the end‐fire mode. The effects of antenna parameters, such as the radiuses and heights of the dielectric resonators as well as the probe length are investigated. The proposed double annular‐ring DRA can offer an impedance bandwidth up to 3–11.2 GHz for a return loss less than −10 dB. The radiation patterns are stable in the passband. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 362–366, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22140