Modal analysis of dielectric loaded coaxial probe fed circular waveguide radiator

S. Safavi-Naini (1) , Hossein Ameri Mahabadi (1)

1 Department of Electrical Engineering

An almost rigorous procedure for analyzing dielectric resonator antennas in cylindrical enclosures is presented. The resonant frequency and radiation pattern of a circular waveguide radiator have been analyzed by the method presented. The primary consideration in this special design has been the bandwidth. Experimental results and theoretical predictions for two cases (∈=4,12) are shown. As is evident from this comparison, the method has a reasonable accuracy. In both cases, a piecewise sinusoidal distribution for the probe current has been assumed. In general a limited number of modes in both inhomogeneous and homogeneous regions provides sufficiently accurate results for many practical cases

Mots clés: antenna feeders; antenna radiation patterns; circular waveguides; dielectric resonators; dielectric-loaded; antennas probes; waveguide antennas; bandwidth; circular waveguide radiator; coaxial probe fed radiator; cylindrical enclosures; dielectric loaded antenna; dielectric resonator antennas; homogeneous regions; inhomogeneous region; modal analysis; piecewise sinusoidal distribution; probe current; radiation pattern; resonant frequency

Domaines: Electronique

S. Safavi-Naini, Hossein Ameri Mahabadi. Modal analysis of dielectric loaded coaxial probe fed circular waveguide radiator. Antennas and Propagation Society International Symposium, 1991. AP-S. Digest, Jun 1991, United States. pp.1856-1859 vol.3. ⟨hal-00722719⟩