Slot radiators and arrays at X-band

Experimental verification of the validity of Stevenson´s expression for a longitudinal shunt slot has been obtained. The theoretical expression has been found to be valid throughout X-band. Substantiating curves are shown, Resonant slot lengths as functions of slot dimensions and position on the waveguide are given. Correlation. between the phase angle of the admittance and the phase angle of the radiated field of a slot has been established. The behavior of the radiation pattern as a function of the position of the slot on the waveguide is shown. The characteristics of linear arrays of these slots are given, and some of the applications are indicated.