Abstract

A method for designing TM leaky-wave antennas with prescribed far-field patterns using impedance surfaces is presented. The impedance surface amounts to a grounded, anisotropic substrate topped by a reactance sheet. The transverse resonance technique is employed to analytically solve for the propagation and leakage constants along the structure. Two design examples are reported: a constant amplitude aperture field with increased directivity, and a modified Hamming window aperture field with reduced sidelobe levels.

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