Zero-bias Schottky Diode Power Detector for D-band

The D-band (110 - 170 GHz) waveguide-based zero-bias Schottky diode (ZBD) power detector is reported. The design aims to get high responsivity across the band. The circuit is fabricated on a 50 μm thick quartz substrate. A 3D model and spice model of a commercially available zero-bias Schottky diode are used in the design. The detector achieves the average responsivities of nearly 5000 V/W and a minimum of 1900 V/W at higher frequencies. The detector circuit is housed in a gold-plated metallic block for measurements.