20-40GHz High Gain Buffer Amplifier

CHA2098b

Ref. : DSCHA20981233-21 Aug 01

7/8

Specifications subject to change without notice

Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE

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Typical Bias Tuning

The circuit schematic is given below:

27

IN

OUT

Vd 2,3

Vg 3

Vg1

Vd1

Vg 2

For typical operation, the three drain biases are connected altogether. In a same way, all the gate

biases are connected together at the same power supply, tuned to drive a small signal operating

current of 130mA. A separate access to the gate voltages of each stage (Vg1,2 & 3) is provided for the

fine tuning of the stages regarding the application.