Design of transverse slot arrays fed by boxed stripline

A design procedure is described whereby the lengths and offsets of an array of transverse slots can be determined, in the presence of mutual coupling, when the slots are excited by a boxed stripline and when pattern and input impedance are specified. The design is based on two sets of simultaneous equations. One set relates the TEM scattering off each slot to the field distribution in the slot, in the manner of Stevenson. The other set relates the stripline-fed slot array to an equivalent, properly loaded slot array, center-fed by two-wire lines, whose mutual impedance terms are easily calculated. The procedure is illustrated by the design of an eight element linear array. Experimental data in support of the theory will be presented.