Abstract: A high-performance SiGe heterojunction phototransistor (HPT) with peak responsivity of $12.5 \mathrm{~A} / \mathrm{W}$ at 850 nm and an optical transition frequency of 150 GHz is developed ...
Abstract: A quadrature generation circuit designed to convert local oscillator signals into quadrature signals is described. An RC polyphase filter construction produces precise I/Q quadrature signals ...
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