Design of transverse slot arrays fed by a boxed stripline

An analytical design method applicable to linear transverse slot arrays fed by a boxed stripline is developed. An integral equation involving the unknown electric field distribution in the slot is formulated. The method of moments is utilized to obtain a numerical solution for the field distribution. The insight gleaned from such a computation is used to approximate the field in the slot by a perturbed half-cosinusoid, equiphase distribution. An array design technique which accounts for the external mutual coupling is presented. The design is based on a pair of equations which determine the offsets and lengths of the slots in the array. Experimental data are offered to validate the theoretical approach.