Showing papers on "FET amplifier published in 2019"

Differential transimpedance amplifier

Abstract: Disclosed is a differential transimpedance amplifier The differential transimpedance amplifier includes a common gate amplifier configured to receive an electrical signal from an input node, and a common source amplifier configured to have a feedback resistor and receive the electrical signal form the input node, wherein an output signal of the common gate amplifier and an output signal of the common source amplifier form a differential signal pair

S wave band broadband MMIC low -noise amplifier

Abstract: The utility model provides a S wave band broadband MMIC low -noise amplifier, including the dual -stage amplifier: first order fet amplifier, first order grid biasing network, first order drain electrode biasing network, the first network of transmission lines with the series connection of first order fet amplifier, second level fet amplifier, second level grid biasing network and second level drain electrode biasing network, tertiary matching network: input stage matching network, interstage matching network and output stage matching network. The utility model discloses leak level parallel negative -feedback network in second level field effect transistor source, the feedback resistance of feedback network has adjusted the gain of amplifier, and the range and the phase place of signal have been adjusted simultaneously to the electric capacity of feedback network, has still played the effect that the direct current is kept apart. Make to keep good gain flattening degree in the frequency band of broad, showing the linearity that has improved low -noise amplifier, reduced noise coefficient.