GaN Field Effect Transistors with Integrated Antennas for THz Heterodyne Detectors

We realized GaN based Field Effect Transistors to be used both for direct and heterodyne detection of mm wave / THz signals. Polarization-sensitive, planar antennas were designed and integrated on chip. Device were fabricated relying on an industrial III-V platform. Spectral response in the 0.22-0.38 THz range was acquired. An efficient mixing between gate voltage and drain current was shown.