This work represents the first demonstration of in-phase power-combined frequency multipliers above 100 GHz based on a dual-chip single-waveguide topology, which consists of two integrated circuits symmetrically placed along the E-plane of a single transmission waveguide. This strategy increases by a factor of 2 the maximum sustainable input power with regard to traditional waveguide multipliers. A biasless 190 GHz Schottky doubler based on this novel concept has been designed and tested with a 6-10% conversion efficiency measured across a 177-202 GHz band when driven with a 50-100 mW input power at 300 K.
- local oscillator
- submillimeter wavelengths
- planar Schottky diode
- frequency multiplier
Siles, J. V., Maestrini, A., Alderman, B., Davies, S. R., Wang, H., Treuttel, J., Leclerc, E., Narhi, T., & Goldstein, C. (2011). A single-waveguide in-phase power-combined frequency doubler at 190 GHz. IEEE Microwave and Wireless Components Letters, 21(6), 332-334. https://doi.org/10.1109/lmwc.2011.2134080