The noisehyphen;equivalent power of heavily doped infrared silicon Schottkyhyphen;barrier diodes is calculated for the case in which the substrate has been eliminated. Assuming an antenna radiation resistanceRa=100 OHgr; and minimizingPeqat lgr;=10 mgr;m for an impurity concentration of 1019/cm3yieldsPeq=10minus;12W/Hz1/2for the detector andPeq=4.8times;10minus;17W/Hz for the mixer.
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