DocumentCode :
1494225
Title :
Analysis of the rectangular waveguide slot coupled multilayer hemispherical dielectric resonator antenna
Author :
Kakade, A.B. ; Ghosh, Bablu
Author_Institution :
Dept. of Electron. & Telecommun. Eng., Rajarambapu Inst. of Technol., Sakharale, India
Volume :
6
Issue :
3
fYear :
2012
Firstpage :
338
Lastpage :
347
Abstract :
A rectangular waveguide feed to the dielectric resonator antenna (DRA) is proposed. A three-layer DRA structure is used to achieve enhanced and broadband coupling to the waveguide. The antenna topology is easy to realise and does not need additional coupling or matching elements to effectively excite the DRA. The configuration also affords ease in frequency tuning without sacrificing bandwidth or radiation performance. The full-wave Green´s function approach is presented for the analysis of such multilayer structures with an arbitrary number of layers with greatly reduced computational overhead. The modes of the multilayer DRA can be identified from the analysis, which can be used to explain the broadband nature of the coupling. The double-summation representation of the homogeneous Green´s function has been extended to the multilayer case, leading to a substantial reduction in computation time for the input impedance.
Keywords :
Green´s function methods; antenna feeds; dielectric resonators; microstrip antennas; multilayers; rectangular waveguides; slot antennas; antenna topology; double summation representation; frequency tuning; full wave Green function; hemispherical dielectric resonator antenna; homogeneous Green function; input impedance; rectangular waveguide feed; slot coupled multilayer;
fLanguage :
English
Journal_Title :
Microwaves, Antennas & Propagation, IET
Publisher :
iet
ISSN :
1751-8725
Type :
jour
DOI :
10.1049/iet-map.2011.0315
Filename :
6182931
Link To Document :
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