Title :
Admittance characteristics of narrow radiating slots in nonradiating dielectric waveguide
Author :
Reddy, C.J. ; Ittipiboon, A. ; Cuhaci, M.
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
fDate :
10/1/1993 12:00:00 AM
Abstract :
A study of an inclined slot cut in the metal wall of nonradiative dielectric (NRD) waveguide is presented. The modal expansion method is applied to the development of an equivalent network of a slot discontinuity in NRD waveguide, using the reciprocity and Poynting theorems. The effect of the metal wall thickness is taken into consideration by applying microwave network analysis. Numerical data for the normalised slot admittance is obtained and compared with experimental results. Good agreement is observed. Numerical data for the slot admittance for various dielectric materials is also presented and the radiation patterns of a single slot are included
Keywords :
antenna radiation patterns; antenna theory; dielectric waveguides; electric admittance; slot antennas; waveguide theory; NRD waveguide; Poynting theorem; equivalent network; inclined slot; metal wall thickness; microwave network analysis; modal expansion method; narrow radiating slots; nonradiating dielectric waveguide; numerical data; radiation patterns; reciprocity theorem; slot admittance; slot antenna; slot discontinuity;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
