A Ka-band Monolithic Doubly-Balanced Mixer

A 26-38 GHz monolithic doubly balanced mixer is presented. In this design, a novel configuration was employed to have wide band performance while keeping compact size and simple IF extraction. The MMIC was implemented with WIN 0.15 mum PHEMT process and the chip size is 1 times 2.5 mm 2 . This mixer has a conversion loss of better than 6 dB with good port-to-port isolation and a DC-10 GHz IF bandwidth