Low transmission loss, simple, and broadband waveguide-to-microstrip line transducer in V-, E- and W-band

A low transmission loss, simple mechanical structure, and broadband waveguide-to-microstrip line transducer has been developed with a polytetrafluoroethylene printed circuit board. This can fully cover the V-band, E-band, and W-band, and the transmission losses are typically 0.68 dB, 0.86 dB, and 0.78 dB, respectively, at the center frequency of each band. The transducer in the W-band was already implemented in a W-band 2nd-order harmonic mixer. In this letter, we report the development of the millimeter-wave waveguide-to-microstrip line transducer.