A new waveguide integrated microstrip HBV frequency tripler

Paper in proceeding, 2001

We discuss a new Heterostructure Barrier Varactor (HBV) frequency tripler design, where HBV diodes are embedded in a microstrip environment together with the matching network for the fundamental and the third harmonic. The circuit is mounted in the E-plane of a reduced height Q-band waveguide with an F-band waveguide at the output. Antipodal finline tapers are used for the transitions between the waveguides and the microstrip circuit. Circuits for six-barrier InP HBV diodes have been designed and simulated with an output frequency at the F-band 90-140 GHz.