Design of A 110-GHz On-Chip Antenna-Coupled Power-Adjustable Tripler based on Schottky Diodes

In this paper, we present the design of a 110-GHz on-chip antenna-coupled power-adjustable tripler based on the Schottky diodes. The design integrates two frequency triplers, on-chip antenna, and power synthesizing circuit on one single substrate. The input Ka-band signal is evenly divided via a power splitter into two signals, whose phase difference is adjusted with a phase shifter. Those two Schottky-diodes-tripled signals are synthesized by a 3-dB 90° coupler, and the output power is controllable by adjusting the phase difference between two signals after the power splitter. The simulation results show that the output power can be adjusted from -5 dBm to 17.67 dBm across - 25° to 85° phase difference range.