Amplifier with Automatic Gain Profile Control and Calibration
AssigneeBroadcom Corporation
InventorsRamon GOMEZ, Jianhong XIAO, Takayuki HAYASHI
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Abstract
Embodiments of the present invention provide systems and methods for automatic amplifier gain profile control, including a method for automatically configuring a variable gain profile amplifier according to received input and a variable gain profile amplification system. Further, embodiments of the present invention provide systems and methods for increased gain profile accuracy, including methods and systems to reduce the effects of temperature and/or process variations on the gain profile of an amplifier.
Claims20
A method for automatic amplifier gain profile configuration, comprising:
- (a) receiving an input signal by an amplifier;
- (b) configuring said amplifier according to a first gain profile;
- (c) measuring a first output power level of said amplifier based on said input signal;
- (d) configuring said amplifier according to a second gain profile;
- (e) measuring a second output power level of said amplifier based on said input signal;
- and
- (f) selecting between said first gain profile and said second gain profile based on a comparison of said first output power level and said second output power level.
A variable gain amplification system, comprising:
- an amplifier that receives an input signal and outputs an amplified output signal;
- and
- a gain profile controller that controls said amplifier to select between a first gain profile and a second gain profile of said amplifier;
- wherein said gain profile controller comprises:
- a power detector, coupled to an output of said amplifier, that measures a first output power level and a second output power level at said output of said amplifier based on said input signal;
- wherein said first output power level corresponds to said amplifier being configured according to said first gain profile;
- and
- wherein said second output power level corresponds to said amplifier being configured according to second gain profile.
Dependencies are inferred from the claim text.