High linearity low noise amplifier

摘要

A two-stage RF amplifier comprising first and second transistors arranged in cascode. An input stage includes a common source transistor having a gate terminal responsive to an input signal and an output stage includes a common gate transistor having a source terminal operatively connected to the drain terminal of the common source transistor. A shunt feedback network is arranged between a drain terminal of the common gate transistor and the gate terminal of the common source transistor. A source feedback network is arranged between the source terminal of the common source transistor and a reference potential. A common gate feedback network is arranged between the drain terminal of the common gate transistor and a gate terminal of the common gate transistor. And a termination feedback network is arranged in series between the reference potential and the gate terminal of the common gate transistor.

主权项

1. A cascode amplifier comprising:
an input stage including a common source transistor having a gate terminal responsive to an input signal; an output stage including a common gate transistor having a source terminal operatively connected to the drain terminal of the common source transistor; a shunt feedback network arranged between a drain terminal of the common gate transistor and the gate terminal of the common source transistor; a source feedback network arranged between the source terminal of the common source transistor and a reference potential; a common gate feedback network comprising at least one capacitor and at least one resistor arranged in series between the drain terminal of the common gate transistor and a gate terminal of the common gate transistor; and a termination feedback network arranged in series between the reference potential and the gate terminal of the common gate transistor.