CTL has demonstrated a state-of-the-art amplifier breaking records in terms of small-signal gain and bandwidth. Amplifiers play a key role in enabling new mmWave and terahertz instrumentation. The development of novel broadband sources and synthesizers grandlyrelies on our ability to amplify signals over enormous bandwidths.  High-gain amplifiers will enable a large amplitude control of the source at the system level while ultra-wideband performance will facilitate the integration of the circuit, relax the system complexity, and allow the transfer of complex signals.  A minimum gain of 19 dB was achieved from 325 GHz to 477 GHz. This performance was achieved with a 130 nm indium-phosphide technology from Teledyne’s foundry.  The paper entitled “Collector Series-Resistor to Stabilize a Broadband 400 GHz Common-Base Amplifier”, depicting the circuit design methodology and the measurement results, was published on October 14th, 2021 in the IEEE Transactions on Terahertz Science and Technology journal. 

This work was presented on December 8th, 2021 in the BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS).