Idss RF amplifier

Abstract

A single-power-supply Idss-bias RF amplifier is disclosed, which is composed by the first and second stages Amplifier. The two stages have the same circuit topology except the matching circuits. The source terminal of amplifier is grounded directly to reduce the parasitic effect from the bias circuit. It will increase the stability of the RF amplifier and avoid the oscillation. The lossy matching circuits and eliminating resonator circuit are designed to make the RF amplifier unconditional stable. A variable resister is put into to adjust the D.C. voltage on drain terminal. The current of amplifier could be controlled in reasonable range. High gain and quit low noise have been obtained.

Dependencies are inferred from the claim text.