Dynamically varying linearity system for an RF front-end of a communication device
AssigneeSkyworks Solutions, Inc.
InventorBalasubramanian Ramachandran
Life of this patent
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Abstract
A dynamically varying linearity system “DVLS” capable of varying the linearity of a radio frequency (RF) front-end of a communication device responsive to receiving a condition signal indicating a desired mode of operation of a transmitter. The DVLS may include a condition signal indicative of the desired mode of operation and a controller that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface. The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.
Claims38
A communication device having a system for dynamically varying the operating current of at least part of a multi-mode transmitter comprising:
- a mode selector for selecting a mode of operation of the multi-mode transmitter, wherein the mode selector is configured to select a mode responsive to a command received over a user interface;
- and
- a controller that adjusts the operating current of at least part of the multi-mode transmitter responsive to the mode selector, the controller further including first, second, and third sub-modules, wherein
- the first sub-module is configured to determine a base linearity responsive to the selected mode, where the base linearity is responsive to a crest factor associated with the selected mode,
- the second sub-module is configured to adjust the base linearity responsive to a desired transmit power, and
- the third sub-module is configured to determine the operating current responsive to the adjusted base linearity.
A system comprising:
- a mode selector for selecting a mode of operation of a transmitter, wherein the mode selector is configured to select a mode responsive to a command received over a user interface from the following group of modes:
- voice transmission, low data rate transmission, medium data rate transmission, and high data rate transmission;
- and
- a controller that adjusts the operating current of at least part of the transmitter responsive to the mode selector,
- wherein the controller includes first, second, and third sub-modules, wherein the first sub-module is configured to determine a base linearity responsive to the selected mode, the second sub-module is configured to adjust the base linearity responsive to a desired transmit power, and the third sub-module is configured to determine the operating current responsive to the adjusted base linearity.
A communication device having a system for dynamically varying the operating current of at least part of a multi-mode transmitter comprising:
- means for selecting a mode of operation of the multi-mode transmitter, wherein the selector means is configured to select a mode responsive to a command received over a user interface;
- and
- means for adjusting the operating current of at least part of the multi-mode transmitter responsive to the selector means, wherein the adjusting means further includes:
- means for determining a base linearity responsive to the selected mode, here the base linearity is responsive to a crest factor associated with the elected mode;
- means for adjusting the base linearity responsive to a desired transmit power;
- and
- means for determining the operating current responsive to the adjusted base linearity.
A system comprising:
- means for selecting a mode of operation of a transmitter;
- and
- means for adjusting the operating current of at least part of the transmitter responsive to the selector means
- wherein the adjusting means further includes
- means for determining a base linearity responsive to the selected mode;
- means for adjusting the base linearity responsive to a desired transmit power;
- and
- means for determining the operating current responsive to the adjusted base linearity.
A method for dynamically varying the operating current of at least part of a transmitter, the method comprising:
- selecting a mode of operation for the transmitter;
- and
- adjusting the operating current of at least part of the transmitter in response to selecting the mode of operation, wherein the adjusting step further includes:
- determining a base linearity responsive to the selected mode of operation;
- adjusting the base linearity responsive to a desired transmit power;
- and
- setting the operating current responsive to the adjusted base linearity.
A signal-bearing medium having software for dynamically varying the operating current of at least part of a transmitter, the signal-bearing medium comprising:
- logic configured to select a mode of operation for the transmitter;
- and
- logic configured to adjust the operating current of at least part of the transmitter in response to selecting the mode of operation, wherein the adjusting logic further includes:
- logic configured to determine a base linearity responsive to the selected mode of operation;
- logic configured to adjust the base linearity responsive to a desired transmit power;
- and
- logic configured to set the operating current responsive to the adjusted base linearity.
A computer data signal embodied in a carrier wave comprising:
- a mode selection source code segment comprising means for selecting a mode of operation for the transmitter;
- and
- an adjustment source code segment comprising means for adjusting the operating current of at least part of the transmitter in response to selecting the mode of operation;
- wherein the adjustment source code segment further includes:
- determining source code segment comprising means for determining a base linearity responsive to the selected mode of operation;
- adjustment source code segment comprising means for adjusting the base linearity responsive to a desired transmit power;
- and
- setting source code segment comprising means for setting the operating current responsive to the adjusted base linearity.
A computer-readable medium having software for dynamically varying the operating current of at least part of a transmitter, the computer-readable medium comprising:
- logic configured to select a mode of operation for the transmitter and logic configured to adjust the operating current of at least part of the transmitter in response to selecting the mode of operation, wherein the adjusting logic further includes:
- logic configured to determine a base linearity responsive to the selected mode of operation;
- logic configured to adjust the base linearity responsive to a desired transmit power;
- and
- logic configured to set the operating current responsive to the adjusted base linearity.
A signal-bearing medium having software for dynamically varying the operating current of at least part of a multi-mode transmitter, the signal bearing medium comprising:
- logic configured to select a mode of operation of the multi-mode transmitter, wherein the selector logic is configured to select a mode responsive to a command received over a user interface;
- logic configured to adjust the operating current of at least part of the multi-mode transmitter responsive to the selector means, wherein the adjusting logic further includes logic configured to determine a base linearity responsive to the selected mode, where the base linearity is responsive to a crest factor associated with the selected mode,
- logic configured to adjust the base linearity responsive to a desired transmit power, and
- logic configured to determine the operating current responsive to the adjusted base linearity.
Dependencies are inferred from the claim text.