HIGH-SPEED MONOLITHIC MILLIMETER-WAVE SWITCH ARRAY

A quasi-optical planar grid switch array comprised of hundreds of Scho ttky varactor diodes embedded within an overmoded waveguide is capable of generating switching times of 100-500 ps in the millimeter-wave re gion with Watt-level power-handling capabilities. A proof-of-principle high-speed V band snitch array has been constructed with excellent ag reement between theory and experiment. Less than 1.6-dB insertion loss and >16-dB on/off contrast ratio are measured at 61.5 GHz. The switch rise/fall tine is <127 ps. An instantaneous bandwidth >7 GHz (contras t ratio >15 dB) has also been measured.