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US 6,646,511 B2Granted
Power amplifier with provisions for varying operating voltage based upon power amplifier output power
AssigneeSkyworks Solutions, Inc.
InventorsJames C. Canyon, Klaus D. Buehring
Life of this patent
Estimating the term…
Abstract
A power amplifier system is disclosed in which a power amplifier unit and a power amendment unit are provided. An operating voltage is applied to the power amplifier unit. The power management unit monitors the current drawn by the power amplifier unit and generates a control signal based upon the measured current. The operating voltage applied to the power amplifier unit is adjusted based upon the control signal.
Claims47
A personal communications device comprising:
- a supply input for receiving a power supply voltage;
- a power amplifier unit;
- a controller;
- a voltage regulator for receiving a power supply voltage input via the supply input and outputting a operating voltage supply to the power amplifier;
- a current monitor for measuring the current flow of the operating voltage supply output to the power amplifier unit and outputting a current indicator signal;
- the controller receives the current indicator signal and generates a control signal in accordance with the current indicator signal;
- and
- the voltage regulator adjusts the operating voltage supply in accordance with the control signal.
5 more elements
A personal communications device comprising:
- a supply input for receiving a power supply voltage;
- a power amplifier unit;
- a regulator for receiving a power supply voltage input via the supply input and outputting a operating voltage supply to the power amplifier unit;
- the power amplifier unit further comprises a current monitor for measuring the current flow of the operating voltage supply output to the power amplifier unit and outputting a current indicator signal in accordance therewith;
- the power amplifier unit further comprises a controller for receiving the current indicator signal and generating a control signal in accordance with the current indicator signal;
- and
- the voltage regulator adjusts the operating voltage supply in accordance with the control signal.
4 more elements
A power amplifier unit comprising:
- a power amplifier;
- an input for receiving an operating supply voltage to power the power amplifier;
- a current monitor for monitoring the current flow of the operating supply voltage and outputting a current flow signal based upon the measured current flow;
- a look-up table (LUT) for correlating the measured current flow with the current flow signal;
- and
- a controller for outputting a control signal in accordance with the LUT and the current flow signal.
3 more elements
A power amplifier unit comprising:
- a power amplifier;
- an input for receiving a supply voltage;
- a current monitor for monitoring the current flow of the operating supply voltage and outputting a current flow signal based upon the measured current flow;
- controller for outputting a control signal based upon the current flow signal;
- and
- regulator for outputting an operating voltage to the power amplifier based upon the current flow signal.
3 more elements
A personal communications device comprising:
- a power amplifier unit;
- a power management unit;
- the power management unit comprises an input for receiving a supply voltage;
- a current monitor for monitoring the current flow of an operating supply voltage applied to the power amplifier unit and outputting a current flow signal based upon the measured current flow;
- controller for outputting a control signal based upon the current flow signal;
- and
- regulator for outputting an operating voltage to the power amplifier unit based upon the current flow signal.
4 more elements
A method of applying a power supply voltage to a power amplifier unit comprising the steps of:
- applying a operating voltage to a power amplifier unit;
- measuring the current drawn by the power amplifier unit;
- generating a current flow signal indicative of the current drawn by the power amplifier unit;
- generating a control signal based upon the current flow signal;
- and
- adjusting the operating voltage based upon the control signal.
3 more elements
A method of applying a power supply voltage to a power amplifier unit comprising the steps of:
- applying a operating voltage to a power amplifier unit;
- measuring the current drawn by the power amplifier unit;
- generating a current flow signal indicative of the current drawn by the power amplifier unit;
- looking up a value corresponding to the current flow signal;
- generating a control signal based upon the corresponding value;
- and
- adjusting the operating voltage based upon the control signal.
4 more elements
A personal communications device comprising:
- a power amplifier means;
- a power management means;
- the power management means comprises an input for receiving a supply voltage;
- a means for monitoring the current flow of an operating supply voltage applied to the power amplifier unit and outputting a current flow signal based upon the measured current flow;
- means for outputting a control signal based upon the current flow signal;
- and
- means for outputting an operating voltage to the power amplifier unit based upon the current flow signal.
4 more elements
Dependencies are inferred from the claim text.