Device to control the output power of a class C amplifier

Details Device to control the output power of a class C amplifier Device to control the output power of a class C amplifier

1988-08-30

1989-12-26

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330300, 330302, H03F 3191

Patent

active

048900702

ABSTRACT:
Disclosed is a device to control the output power of an amplifier working in class C mode and comprising at least one bipolar transistor. The bias resistance of the bipolar transistor is made variable through the presence of a field effect transistor, to the gate of which is applied a voltage Vgs, chosen from a set of values that are determined experimentally as a function of the output power to be obtained, the power and frequency of the input signal and the temperature of the bipolar transistor.

REFERENCES:
patent: 4420724 (1983-12-01), Owen

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