Abstract-A mathematical model of a spherical antenna excited by a slot cut in an impedance end-wall of a semi-infinite rectangular waveguide was built using a rigorous solution of the problem. Control of energy characteristics is accomplished by changing impedance distributed on the end-wall of the waveguide section. If the waveguide is excited by the wave H 10 , the wavelength tuning reaches (30-35)%, i.e., about a half of the wavelength range of single mode waveguide regime.
Presented in this paper are the results of ring hybrid metal-dielectric structure experimental investigation. Peculiarities of radiating slot and ring resonator interaction have been investigated. Constructs influence on energy characteristics has been shown.
The results of the experimental investigations of the single u K -band radiator based on inverted strip dielectric waveguide are presented. The basic waveguide structure has a few advantages in comparing with other structures in u K -band. The main of them is an ability of auxiliary elements arrangement. The investigating structure uses exactly this property. The radiator is a combination of two strip resonators, which are placed on both sides of a dielectric substrate. The essential advantage of this construction is the ability of frequency scanning of the main lobe in 26-35 GHz band.
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