BIAS CONTROL FOR REDUCING AMPLIFIER POWER CONSUMPTION AND MAINTAINING LINEARITY

A method and apparatus for biasing an amplifying device whereby the bias current tracks the input power or the power level of a control signal to thereby efficiently match the bias current with needs of the amplifying device. This method and apparatus overcomes the drawbacks of the prior art by bias...

Full description

Saved in:
Bibliographic Details
Main Authors METZGER, ANDRE, BURGER, KERRY, SMALL, GRANT, HAGEMAN, MICHAEL, L, NELLIS, KEITH, SHIE, TERRY, J
Format Patent
LanguageEnglish
French
German
Published 22.05.2013
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:A method and apparatus for biasing an amplifying device whereby the bias current tracks the input power or the power level of a control signal to thereby efficiently match the bias current with needs of the amplifying device. This method and apparatus overcomes the drawbacks of the prior art by biasing, not for maximum output power, but for the power level of the input signal or the control signal, in one embodiment a current conditioner operates in connection with the self adjusting biasing circuit to scale or adjust, potentially on an exponential basis, the baising current for one or more amplifier stages. A cancellation current source may be configured within the bias circuit to cancel unneeded current to further minimise current consumption.
Bibliography:Application Number: EP20060737377