Analysis of untilted edge slots excited by tilted wires

An untilted narrow wall slot, cut between a pair of tilted strips inside a rectangular waveguide, has been analyzed. The combination is excited internally by a TE/sub 10/ mode and the slot radiates externally. This slot/tilted-strips element behaves like a shunt admittance on an equivalent transmission line. This feature can be utilized to design arrays of such slots. Coupled integral equations are derived and solved, using the method of moments, to obtain the slot aperture E-field and the internal forward and backward scattering. Numerical and experimental results are presented to validate the method and to discover the range of useful dimensions for this composite element.<
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