FOURIER-TRANSFORM ANALYSIS OF DIELECTRIC-FILLED EDGE-SLOT ANTENNA

We revisit the radiation characteristics of a dielectric-filled edge-s lot (DFES) antenna, which is made by circumferentially removing the ou ter conductor of a coaxial line. The Fourier transform and the mode-ma tching technique are utilized to obtain a new solution in a fast conve rging series. A dominant-mode solution for the reflected power and the radiation field is given in a simple form. The numerical investigatio n is performed to show the behavior of the antenna input impedance and the radiation pattern.