Millimeter-wave Gaussian-beam antenna and integration with planar circuits

A quasi-planar antenna, which uses a dielectric loaded Gaussian-beam resonator is developed for 60 GHz. The resonator antenna with a Gaussian distribution of the aperture electric field is formed with a spherical and a plane mirror surfaces, which were fabricated on both sides of a piano-convex fused quartz lens with 20 mm diameter and 1.3 mm thickness. This new antenna features a very low sidelobe level (<-30 dB) and a high radiation efficiency (>90%). Antenna characteristics and integration with a mixer circuit are described.