A 305–330+ GHz 2:1 Dynamic Frequency Divider Using InP HBTs

This letter presents an inductor-loaded 2:1 regenerative frequency divider operating up to 331.2 GHz in an InP HBT process, which, to the best of authors' knowledge, is the fastest frequency divider reported thus far. On-wafer measurement shows that the divider is operating from 304.8 GHz to 331.2 GHz, with output power from -27 dBm to -12.3 dBm (no probe loss correction), while dissipating 85.5 mW from -4.1 V and -3.3 V supplies.