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On the TM 101 mode of a hemispherical dielectric resonator antenna
Author(s) -
Leung K. W.,
Luk K. M.,
Lai K. Y. A.,
Lin D.
Publication year - 1993
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.4650061104
Subject(s) - dielectric resonator antenna , resonator , antenna (radio) , dielectric , dielectric resonator , optics , electrical impedance , wavelength , coaxial , physics , input impedance , materials science , optoelectronics , electrical engineering , engineering , quantum mechanics
A hemispherical dielectric resonator antenna axisymmetrically fed by a coaxial probe is investigated both theoretically and experimentally. The input impedance of the lowest‐order TM mode (the TM 101 mode) is evaluated by using the variational formula and the result agrees well with measured data. The effects of the probe length and dielectric constant on the input impedance are studied. Finally, the theoretical radiation pattern is compared with that of a bare mono‐pole of a quarter‐wavelength in height. © 1993 John Wiley & Sons, Inc.