The longitudinal slot charakteristics in waveguide with dielectric layer, situated parallel to its broad walls

Abstract

Waveguide slot arrays (WSA) are widely used in ground and onboard radar-tracking, radiorelay, radionavigating systems [1–4]. There is a danger of occurrence interference maxima of the higher orders in WSA on a hollow waveguides. To avoid occurrence of these maxima, distances between radiators are reduced using different ways. One of them is the use of waveguides of the Π-shaped form [2, 3], another one consists in reduction of a waveguide width [4]. To pull together radiators within the limits of one linear array and to reduce distances between radiators in the neighboring linear arrays it is possible to use slowing down a wave in a waveguide by insertion a dielectric layer.