Theoretical and experimental studies of a cavity-backed slot antenna excited internally by a suspended narrow strip are undertaken. Coupled integral equations are developed to compute the electric field distribution in the slot and the surface current distribution on the strip. The input impedance of the cavity at the feeding point on the strip has been computed theoretically and measured experimentally. The impedance data, being a function of cavity dimension, slot length, strip length, and frequency, can be polyfitted and used to implement a systematic design procedure to construct a planar array of these slots.>
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Hashemi-Yeganeh et al. (1993) studied this question.
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