Amplifier Control Device
AssigneeFujitsu Limited
InventorsHiroyoshi ISHIKAWA, Nobukazu FUDABA, Hajime HAMADA, Kazuo NAGATANI, Yasuhito FUNYU, Norio TOZAWA, Tokuro KUBO
Life of this patent
Estimating the term…
Abstract
A bias control signal generation unit detects ON and OFF of a transmission signal input to an amplifier and having a property of a burst according to burst information. The bias control signal generation unit controls a bias voltage to be applied to an amplifier such that an idle current flowing through the amplifier can be flowing in a larger amount in a transmission OFF period, and can return to a normal level in a transmission ON period.
Claims5
An amplifier control device which receives and amplifies a transmission signal having a property of a burst, comprising:
- an attenuation device attenuating an output signal of the amplifier to a level before amplification and outputting the signal;
- an error signal accumulation value calculation device calculating a difference between the transmission signal and a signal output from the attenuation device as an error signal accumulation value when a transmission signal input to the amplifier is boosted from OFF to ON;
- and
- a bias control device controlling a bias voltage to be applied to the amplifier based on the error signal accumulation value calculated by the error signal accumulation value calculation device.
An amplifier control device which receives and amplifies a transmission signal having a property of a burst, comprising:
- an attenuation device attenuating an output signal of the amplifier to a level before amplification and outputting the signal;
- an error signal accumulation value calculation device calculating a difference between the transmission signal and a signal output from the attenuation device as an error signal accumulation value when a transmission signal input to the amplifier is attenuated from ON to OFF;
- and
- a bias control device controlling a bias voltage to be applied to the amplifier based on the error signal accumulation value calculated by the error signal accumulation value calculation device.
Dependencies are inferred from the claim text.