Amplifier
Negative resistance amplifier

Negative Resistance Amplifier is a type of Regenerative Amplifier that can use the feedback between the transistor's source and gate to transform a capacitive impedance on the transistor's source to a negative resistance on its gate. Compared to other types of amplifiers, this "negative resistance amplifier" will require only a tiny amount of power to achieve very high gain, maintaining a good noise figure at the same time.
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