THz mixtenna chips and quasi-optical mixers for focal plane imaging applications

THz mixtenna chips and quasi-optical mixers for focal plane imaging applications are presented. Firstly, the THz Schottky diodes with the cutoff frequency of 3.2 THz are designed and fabricated. Then, the mixtenna chips are designed, by extending the two pads of the diode to a differentially-fed antenna. Finally, the 325 GHz quasi-optical mixer and mixer array, which consist of the mixtenna chip integrated with the silicon lens, are studied and measured.