Amplifier bias control device

Details Amplifier bias control device Amplifier bias control device

1995-02-10

1997-04-29

Mottola, Steven

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330149, H03G 320, H03F 126

Patent

active

056253222

ABSTRACT:
A device for controlling the biasing of an amplifier receives an input signal to be amplified and a bias signal and supplies an amplified output signal. The amplifier has at least two separate possible power output values and the amplified output signal is principally in a predetermined frequency band. The device includes a circuit for controlling the biasing of the amplifier which receives linearity control information and generates the bias signal in accordance with the linearity control information so that an actual out-band send level is substantially equal to the required out-band send level. The actual out-band send level is defined as a send level of the amplified output signal outside the predetermined frequency band. The required out-band send level is defined as a predetermined maximal out-band send threshold level for any of the separate possible output power values.

REFERENCES:
patent: 5081713 (1992-01-01), Miyazaki
patent: 5119040 (1992-06-01), Long et al.

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