ADAPTIVE LINEARITY COMMUNICATION DEVICE

• US 20090239496A1
• Filed: 03/18/2009
• Published: 09/24/2009
• Est. Priority Date: 03/21/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Soliman, Samir S., Rajkotia, Amol, Toncich, Stanley S.
• Granted Patent: US 8,588,727 B2
• Time in Patent Office: Days
• US Class Current: 455/343.100
• CPC Class Codes: H04B 1/16 Circuits

Abstract

An adaptive linearity communication device and its operation are disclosed. The adaptive linearity communication device may include a component having a linearity dependent upon a bias and a processor configured to change the bias in response to the detection of a connection between the wireless communication device and a high-capacity power source. A method of operating an adaptive linearity communication device having a bias dependent component where the device is configured to operate in a high efficiency mode in the absence of a connection between the device and a high-capacity power source, may include determining whether a high-capacity power source is connected to the wireless communication device, and varying the operation of the bias dependent component based on whether a high-capacity power source is connected to the wireless communication device.

Claims

1. A wireless communication device, comprising:

a component having a linearity dependent upon a bias; and

a processor configured to change the bias in response to detection of a connection between the wireless communication device and a high-capacity power source.

2. The wireless communication device of claim 1, wherein the component is selected from a group consisting of a mixer, a filter, an amplifier, an analog-to-digital converter (ADC), and any suitable combination of the foregoing components.

3. The wireless communication device of claim 1, wherein the bias is a current bias.

4. The wireless communication device of claim 1, wherein the bias is a voltage bias.

5. The wireless communication device of claim 1, wherein the processor is further configured to change the bias in response to the detection of the connection and detection of an interfering signal.

6. The wireless communication device of claim 1, wherein the processor is further configured to change the bias in response to the detection of the connection and detection of an interfering signal associated with the receipt of a UWB incoming signal.

7. The wireless communication device of claim 1, wherein the processor is further configured to change the bias in response to the detection of the connection and detection of an interfering signal associated with cross-modulation.

8. The wireless communication device of claim 1, wherein the processor is further configured to change the bias in response to the detection of the connection, and detection of an interfering signal associated with cross-modulation, and based upon the jurisdiction within which the device is operating.

9. The wireless communication device of claim 1, wherein the device is configured to process incoming signals based on a plurality of signal protocols, wherein the change of bias varies depending upon the protocol of the incoming signal.

10. The wireless communication device of claim 1, wherein the component is a receiver component.

11. The wireless communication device of claim 1, wherein the component is a receiver front end component.

12. The wireless communication device of claim 1, further comprising means for disabling the ability of the processor to change the bias in response to the detection of a connection between the wireless communication device and the high-capacity power source.

13. The wireless communication device of claim 1, wherein the processor changes the bias only when the charge of a portable power source exceeds a threshold.

14. The wireless communication device of claim 1, wherein the processor determines whether the connection exists at a preprogrammed interval.

15. The wireless communication device of claim 1, wherein the processor determines whether the connection exists at a user selectable interval.

16. A wireless communication device, comprising:

a component having a linearity dependent upon a bias; and

means for changing the bias in response to the detection of a connection between the wireless communication device and a high-capacity power source.

17. A method for operating a wireless communication device having a bias dependent component, comprising:

determining whether a high-capacity power source is connected to the wireless communication device; and

varying bias to the bias dependent component based on whether a high-capacity power source is connected to the wireless communication device.

18. The method of claim 17, wherein the bias dependent component is operated in a high linearity mode when a high-capacity power source is connected.

19. The method of claim 17, wherein the component is selected from a group consisting of a mixer, a filter, an amplifier, an analog to digital converter (ADC) and any suitable combination of the foregoing components.

20. The method of claim 17, wherein the bias is a current bias.

21. The method of claim 17, wherein the bias is a voltage bias.

22. The method of claim 17, further comprising determining whether an incoming signal includes an interfering signal, and changing the bias in response to the detection of the connection and the detection of the interfering signal.

23. The method of claim 17, further comprising determining whether an UWB incoming signal includes an interfering signal, and changing the bias in response to the detection of the connection and the detection of the interfering signal.

24. The method of claim 17, further comprising determining whether an incoming signal includes an interfering signal caused by cross-modulation, and changing the bias in response to the detection of the connection and the detection of the interfering signal.

25. The method of claim 17, wherein the device is configured to process incoming signals based on a plurality of signal protocols, wherein the bias varies depending upon the protocol of the incoming signal.

26. The method of claim 17, wherein the component is a receiver component.

27. The method of claim 17, wherein the component is a receiver front end component.

28. The method of claim 17, further comprising:

operating the device in a high-efficiency mode in the absence of a connection between the device and a high-capacity power source.

29. A computer-readable medium embodying a set of instructions executable by one or more processors, comprising:

code for determining whether a high-capacity power source is connected to a wireless communication device; and

code for varying bias to a bias dependent component based on whether a high-capacity power source is connected to the wireless communication device.

30. The computer-readable medium of claim 29, further comprising:

code for operating in a high efficiency mode in the absence of a connection between the device and a high-capacity power source.