140 GHz broadband crossbar stripline mixers with over 20 GHz instantaneous RF bandwidth

Abstract

The letter presents the design and performance of a 140 GHz broadband crossbar stripline mixer using beam-lead diodes. With the LO fixed at 140 GHz, a conversion loss of 7–11 dB has been achieved with the RF swept from 140 to 160 GHz, and 6 to 8 dB with the RF swept from 133 to 147 GHz.