TWO-CASCADE HF-AMPLIFIER Russian patent published in 2011 - IPC H03F3/189 H03F1/22 

FIELD: electricity.

SUBSTANCE: two-cascade HF-amplifier includes input transistor (1) as per the diagram with common emitter the base of which is connected as to alternating current to signal source (2) and the first output of setup circuit of static mode of the first cascade (3), the output transistor (4) the emitter of which is connected to collector of input transistor (1); base is connected to the second output of setup circuit of static mode of the first cascade (3), and collector is connected through correction inductance (5) to bus (6) of power source, the second amplification cascade (7) the input of which is connected through separating capacitor (8) to collector of output transistor (4) and to the first output of resistor of setup circuit of static mode of the second cascade (9). The second output of resistor of setup circuit of static mode of the second cascade (9) is connected to emitter of output transistor (4).

EFFECT: reducing the influence of setup circuit of static mode of the second amplification cascade on the main parameters of the device.

4 cl, 13 dwg