Circularly polarized millimeter-wave rectenna on silicon substrate

摘要

A circularly polarized (CP) silicon-integrated W-band rectenna (r_e_c_t_ifying ante_n_n_a_) for use in six-port polarimetric radar systems was designed, numerically optimized, and fabricated. A rigorous numerical optimization was performed by using the supergrid method (SGM). The rectenna applies a novel low-loss purely planar dual-patch antenna (DPA) layout, which allows the receiver to be manufactured using monolithic integration. The measurement results for the receiver demonstrate an excellent cross-polarization discrimination (XPD) <14 dB @ 76 GHz over a wide range of the scan angle (12 dB @ /spl plusmn/20/spl deg/).