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US 7,064,607 B2Granted
Bias system and method
AssigneeTexas Instruments Incorporated
InventorsKenneth George Maclean, Suribhotla Venkata Rajasekhar, David John Baldwin, Marco Corsi, Tobin Hagan
Life of this patent
Estimating the term…
Abstract
A bias device that modifies the bias of a device based on an input signal to the device. The device may have a fixed bias, and the bias device can be connected in parallel with the fixed bias. The device can be an amplifier, such as a linear amplifier or a class AB amplifier. The bias device can be configured to provide maximum bias during the device's crossover time period.
Claims17
A system, comprising:
- a device that provides an output signal based on an input signal, the device having an associated bias;
- and
- a bias device that provides a boost to the bias of the device based on the input signal;
- wherein the bias device is further configured to provide maximum bias during the device's crossover time period.
1 more element
A system, comprising:
- a device that provides an output signal based on an input signal, the device having an associated bias;
- and
- a bias device that provides a boost to the bias of the device based on the input signal;
- the bias device is further configured to provide maximum bias during the device's crossover time period;
- wherein, the bias device further comprising a phase shifter that phase shifts the bias based on the input signal.
2 more elements
A system comprising:
- means for providing a boost to a bias signal to a biased circuit;
- and
- means for controlling the means for providing a boost, based on an input signal;
- further comprising means for phase shifting the bias signal based on the input signal, the means for phase shifting configured to produce a maximum bias at a zero amplitude region.
1 more element
A method, comprising:
- monitoring an input signal;
- and
- modifying an amplifier bias based on the monitored input signal to provide a boost at a predetermined time;
- further comprising phase shifting the amplifier bias based on the signal being amplified.
1 more element
Dependencies are inferred from the claim text.