Characteristics of Radiated Fields Formed by Patch Antenna with Complicated Aperture
Abstract
The paper considers issues related to simulating the electrodynamic characteristics of a patch antenna based on a microstrip disc resonator with a complex topology of the radiating aperture in the form of three slot log-periodic discontinuities, oriented at the angle of 1200 with the scaling factor τ=0.8 and the spacing factor σ= 0.15. Three concentric ring slot discontinuities are located in a grounded base at a certain distance from the dielectric substrate, the centers of which coincide with the center of the microstrip disc. The antenna was fed by a section of a coplanar line with a stepped profile of the central conductor. The calculations used a model based on two methods: the magnetic wall model (semi-open resonator model) and the finite element method. After optimization procedures were carried out for the selected parameters, it was established that compromise parameter sets were necessary to obtain the required characteristics
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