Heterodyne Mixing of Sub-Terahertz Output Power from Two Resonant Tunneling Diodes Using InP Schottky Barrier Diode

摘要

We report on the heterodyne of output powers from GalnAs/AIAs resonant tunneling diodes (RTDs) oscillating at around 430 GHz using a Ni-lnP Schottky barrier diode (SBD) integrated with a bow-tie antenna. The RTDs have approximately the same frequencies and total output powers of 430/435GHz and 145/148uW, respectively. The full width at half maximum of the linewidth of the detected signal was 5MHz. From this result, the linewidth of each RTD was estimated to be 2.5 MHz. The obtained linewidth was theoretically discussed.