A 5 mW-290 GHz heterostructure barrier tripler in a waveguide configuration

An output power of 5 mW has been demonstrated at 290 GHz by tripling a primary signal in the W band. The nonlinear devices are high performance InP-based heterostructure barrier varactors mounted in mechanically tuned waveguide harmonic multiplier. The flange-to-flange maximum efficiency was 5% whereas the bandwidth is around 30 GHz. These results are the highest to date for an HBV multiplier operating at these frequencies.