Title :
Dielectric resonator antenna excited by waveguide slot for radar applications
Author :
Eshrah, I.A. ; Kishk, A.A. ; Yakovlev, A.B. ; Glisson, A.W.
Author_Institution :
Dept. of Electr. Eng., Univ. of Mississippi, University, MS, USA
Abstract :
Dielectric resonator antennas excited by waveguide slots are analyzed numerically using the method of moments. The dielectric resonator is modeled as a body of revolution based on the integral equation formulation for the equivalent electric and magnetic surface current densities. The analysis of the slotted waveguide uses the dyadic Green´s functions of an infinite rectangular waveguide. The scattering parameters for a slotted waveguide loaded with a dielectric resonator antenna disk are calculated and compared with special cases of interest.
Keywords :
Green´s function methods; S-parameters; antenna feeds; antenna radiation patterns; antenna theory; dielectric resonator antennas; electric field integral equations; magnetic field integral equations; method of moments; radar antennas; slot antennas; body of revolution; dielectric resonator antenna; dyadic Green´s functions; electric surface current densities; equivalent current densities; infinite rectangular waveguide; integral equation formulation; magnetic surface current densities; method of moments; radar applications; radiation patterns; scattering parameters; waveguide slots; Current density; Dielectric resonator antennas; Green´s function methods; Integral equations; Magnetic analysis; Moment methods; Radar antennas; Radar applications; Rectangular waveguides; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219893
