Systems and methods for optimizing amplifier operations
Methods and systems for optimizing amplifier operations are described. The described methods and systems particularly describe a feed-forward control circuit that may also be used as a feed-back control circuit in certain applications. The feed-forward control circuit provides a control signal that may be used to configure an amplifier in a variety of ways.
1. A system for optimizing amplifier operations, including:
an amplifier configured to receive an input signal and generate an output signal therefrom having a desired characteristic that includes at least one of a power level, a voltage range, or a current level; and
a feed-forward control circuit configured to receive the input signal, analyze the input signal using a bandwidth detector, generate a control signal based on the analyzed input signal, and provide the control signal to the amplifier for impressing the desired characteristic upon the output signal.
2. A system for optimizing amplifier operations, including:
an amplifier configured to receive an input signal and generate an output signal therefrom having a desired characteristic that includes at least one of a power level, a voltage range, or a current level; and
a feed-forward control circuit configured to receive the input signal, analyze the input signal using a modulation detector for detecting the modulation characteristics of the input signal, generate a control signal based on the analyzed input signal, and provide the control signal to the amplifier for impressing the desired characteristic upon the output signal.
3. A system for optimizing amplifier operations, including:
an amplifier configured to receive an input signal and generate an output signal therefrom having a desired characteristic that includes at least one of a power level, a voltage range, or a current level; and
a feed-forward control circuit including a look-up table and configured to receive the input signal, analyze the input signal using a circuit element detector configured to measure component parameters of coupled circuit elements, apply the analyzed input signal to the look-up table to generate a control signal as a function of the analyzed input signal, and provide the control signal to the amplifier to modify at least one operating characteristic of the amplifier, thereby altering the desired characteristic of the output signal.
4. The system of claim 1 , 2 , or 3 , wherein the feed-forward control circuit is further configured to receive an additional input that is used in lieu of, or in addition to, the input signal to generate the control signal that is provided to the amplifier.
5. The system of claim 4 , wherein the additional input provides information including at least one of: (a) a temperature, (b) a voltage level, (c) a parameter related to a load mismatch, (d) an output power level from the amplifier, (e) power supply data, (f) battery data, (g) biasing data, (h) signal level, (i) logic level conditions, (j) switch position data, (k) a physical location of the amplifier, (l) a mode of operation of the amplifier, or (m) a modulation format of the output signal.
6. The system of claim 1 , 2 , or 3 , wherein the amplifier includes a signal modification block, and wherein the control signal configures the signal modification block.
7. The system of claim 6 , wherein the signal modification block includes one or more of: (a) a gain stage block, (b) attenuator block, (c) bias adjustment block, (d) power supply control block, (e) signal delay block, or (f) path modifier block, adapted to be configured by the control signal.
8. The system of claim 1 , 2 , or 3 , wherein the amplifier and the feed-forward control circuit, in entirety or in part, are monolithically integrated.
9. A method for optimizing amplifier operations, the method comprising:
generating a feed-forward control signal based upon at least one measured characteristic of an input signal without including feedback from an output signal;
providing the input signal and the feed-forward control signal to a scalable periphery amplifier including a tunable matching network;
amplifying the input signal using the scalable periphery amplifier;
providing the amplified input signal through the tunable matching network as the output signal; and
using the feed-forward control signal to modify an operating characteristic of the scalable periphery amplifier.
10. The method of claim 9 , wherein modifying the operating characteristic of the scalable periphery amplifier comprises modifying an output impedance of the scalable periphery amplifier to match a load impedance presented to the scalable periphery amplifier.
11. The method of claim 10 , wherein modifying the output impedance of the scalable periphery amplifier comprises modifying the tunable matching network.
12. The method of claim 9 , wherein modifying the operating characteristic of the scalable periphery amplifier comprises modifying an input impedance of the scalable periphery amplifier to affect an amplitude of the input signal presented to the scalable periphery amplifier.
13. The method of claim 9 , wherein modifying the operating characteristic of the scalable periphery amplifier comprises causing the scalable periphery amplifier to operate in a substantially constant efficiency over a range of input signal amplitudes.
14. The method of claim 9 , wherein modifying the operating characteristic of the scalable periphery amplifier includes modifying a size of an amplifying device inside an integrated circuit.
15. The method of claim 9 , wherein modifying the operating characteristic of the scalable periphery amplifier includes eliminating a current flow in an amplifying device contained inside an integrated circuit.