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This work presents shape reconstruction results using TE experimental scattering data of a perfect electric conducting (PEC) cylinder. The level set method combined with the method of moments is used for the reconstruction. The experimental data are collected using two ultrawideband strip-fed dielectric resonator antennas rotating around the target. The removal of the drift noise is achieved through...
A linear dielectric resonator antenna array fed by dielectric image line is presented. The effective dielectric constant method is used to approximate the coupling between the DIL and the DRAs. A Dolph-Chebyshev amplitude distribution was used to control the sidelobe level of the array radiation pattern. The cross polarization is suppressed by inserting a metal sheet at the center of the DRA or by...
The aperture coupled dielectric resonator antenna array fed by dielectric image line backed with a reflector was simulated using HFSS. A good return loss was obtained for an array of 7 DRA elements by adding cancelling slots with the radiating slots. Adding a reflector in the DIL side decreases the back radiation and increases the gain for the array.
Dielectric resonator antennas have been developed for the use in microwave and millimeter frequency bands; they have several advantages over the microstrip patch antennas such as smaller size, higher radiation efficiency, wider bandwidth, and no excitation of surface waves. Recently, the aperture coupled rectangular DRA fed by a microstrip line was analyzed. This paper presents an aperture coupled...
Dielectric resonator antennas (DRAs) have several advantages compared to microstrip patch antennas, such as smaller size, higher radiation efficiency, wider bandwidth, and no excitation of surface waves. This paper presents an aperture coupled dielectric resonator antenna fed by a dielectric image line. The modal expansion method is used to describe the field on the DRA side and the change in the...
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