Optical control of MMIC oscillators and model parameter analysis of an illuminated FET at the Ka- and V-band

This paper reports experimental results of optical control of millimeter-wave HJFET MMIC oscillators and FET model parameter analysis with illumination. Using a noncoherent optical source, the maximum optical tuning ranges of 32 MHz around 30 GHz and 260 MHz around 51 GHz were obtained. By means of parameter extraction, a 46.6% increase in Cgd and a 19.1% decrease in Cds due to the illumination and their frequency dependence were appreciated.<
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