Differential amplifier with variable neutralization
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United States of America Patent
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Dec 5, 2023
Grant Date -
Apr 1, 2021
app pub date -
Dec 10, 2020
filing date -
Mar 20, 2017
priority date (Note) -
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Abstract
Disclosed examples include differential amplifier circuits and variable neutralization circuits for providing an adjustable neutralization impedance between an amplifier input node and an amplifier output node, including neutralization impedance T circuits with first and second impedance elements in series between the amplifier input and output, and a third impedance element, including a first terminal connected to a node between the first and second impedance elements, and a second terminal connected to a transistor. The transistor operates according to a control signal to control the neutralization impedance between the amplifier input node and the amplifier output node.
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