Zero-bias, 50 dB dynamic range, V-band power detector based on CVD graphene-on-glass

In this paper we report a compact, zero-biased Graphene-based power detector circuit based on our in-house metal-insulator-Graphene (MIG) diode fabricated on glass substrate. The designed circuit is optimized for the frequency band 40–75 GHz. Measurements show dynamic range of more than 50 dB with down to −50 dBm sensitivity. The measured responsivity for the fabricated circuit on glass is 168 V/W at 2.5 GHz and it reaches 15 V/W at 60 GHz without calibration for substrate losses. Measurement results together with the introduced CVD Graphene process promote the proposed circuit and device for repeatable, statistically stable millimeter-wave and sub-millimeter wave circuits applications.