Heterostructure Barrier Varactor Quintuplers for Terahertz Applications

We present progress and status of heterostructure barrier varactor quintupler sources for 170 GHz and 210 GHz (G-band). The source modules feature an ultra-compact waveguide block design, and a microstrip matching circuit on high-thermal-conductivity AlN to improve the power handling capability. Furthermore, we present progress on design and fabrication of integrated HBV circuits for terahertz applications.