(Nov 20 2012)
ATF33143. There is an RC link 10 pF/100
ohms from drain to the source ground plane.
The output is routed from the drain through a
small ferrite tube that adds a resistive
loss of 3 ohms on 144 MHz and 11 ohms on 1296 MHz.
This amplifier is not neutralized.
The drain voltage is set with a potentiometer followed by an
emitter follower to 1.51 V.
The source resistance is set to 13.4 ohms with another potentiometer
which gives a current of 35 mA through the transistor.
ATF33143. Input impedance and forward gain.
ATF33143. Output impedance and reverse isolation.