Apparatus for controlling consumption power for gaas fet

Details Apparatus for controlling consumption power for gaas fet Apparatus for controlling consumption power for gaas fet

H - Electricity

03

G

H03G 1/00 (2006.01) G05F 1/575 (2006.01) H03F 1/02 (2006.01)

Patent

CA 2077155

In a consumption power controlling apparatus for a GaAs FET amplifier, even when a consumption power is controlled, the changes respectively in the gain, the phase, and the deviation of gain within a band can be minimized in a satisfactory manner. There are disposed resistor means arranged between first power source means and a drain region of a GaAs FET and variable resistor means having an adjusting member and being arranged between output terminals respectively of the first power source means and variable voltage means. The adjusting member is connected to a gate region of the GaAs FET. There is also disposed control means having two input terminals between which the resistor means to supply a control signal to the variable voltage means so as to control a voltage developed across the resistor means to be substantially equal to a predetermined reference value, thereby obtaining a fixed drain current of the FET.

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