Efficient generation of guided millimeter-wave power by photomixing

P.G. Huggard, B.N. Ellison, P. Shen, N.J. Gomes, P.A. Davies, W.P. Shillue, A. Vaccari, J.M. Payne
2002 IEEE Photonics Technology Letters  
A 70-GHz bandwidth commercial photodiode has been coupled to W-band waveguide and used as a photomixing source from 75 to 170 GHz. Maximum power conversion efficiency of 1.8% was obtained at 75 GHz, where an optical input of +10 dBm yielded a nonsaturated millimeter-wave (mm-wave) power of 7.5 dBm. Optimizing the photomixer backshort tuning at individual frequencies showed that the mm-wave power decreased with frequency to a level of 30 dBm at 170 GHz. Fixed tuning allowed the generation of
more » ... e generation of power across the full waveguide band from 75 to 110 GHz, with a variation within 5 dB across the majority of the band.
doi:10.1109/68.980513 fatcat:zpsjcqlog5bvlmpq7tg4gu4drq