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# A Single-Waveguide In-Phase Power-Combined Frequency Doubler at 190 GHz

• ##### C. Goldstein
LERMA, Obs. de Paris, Paris, France
IEEE Microwave and Wireless Components Letters (Impact Factor: 1.78). 07/2011; DOI: 10.1109/LMWC.2011.2134080
Source: IEEE Xplore

ABSTRACT 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.

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