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Radiation characteristics of a cylindrical dielectric resonator antenna operating at HE 21δ
Author(s) -
Drossos George,
Wu Zhipeng,
Davis Lionel E.
Publication year - 1996
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/(sici)1098-2760(19961205)13:5<248::aid-mop2>3.0.co;2-g
Subject(s) - dielectric resonator antenna , directivity , optics , physics , radiation pattern , antenna gain , monopole antenna , antenna efficiency , bandwidth (computing) , dipole antenna , radiation , acoustics , excited state , resonator , antenna (radio) , electrical engineering , engineering , telecommunications , atomic physics
The radiation from a cylindrical dielectric resonator antenna (DRA) excited at the HE 21δ mode by a coaxial probe is theoretically formulated and experimentally investigated. Assuming magnetic‐wall boundary conditions, equations for the electric field components in the far‐field region are derived for the first time. The dependence of the radiation pattern and directivity on the dimensions of the cylinder are discussed. The gain of the DRA operating at the HE 21δ mode is 30% greater than that of an ideal monopole, and the bandwidth is about four times greater than bandwidth of a patch antenna. © 1996 John Wiley & Sons, Inc.