A 315–340 GHz Frequency Amplifier/Multiplier Chain with 8.5 dBm Peak Output Power

In this paper, a 315–340 GHz frequency ampli-fier/multiplier chain (FAMC) based on MMICs and Schottky diodes with high output power is presented. To implement the proposed FAMC, the V-band MMIC tripler with 8-way power amplifier array is introduced in the first stage, which can multiply and drive the input signal to the next stage. Then, a D-band balanced doubler with Y-band tripler based on Schottky diodes is utilized for the second and third stages, respectively. Besides, to improve the stability of the proposed FAMC, each stage, implemented in different modules, is integrated with power supply and heat-dissipation system into a chassis. To verify the mentioned mechanisms, a x18 FAMC is fabricated and measured, which exhibits a maximum 8.5 dBm output power with a peak 8.1% conversion efficiency over 315–340 GHz under a 0 dBm input power.