Method and System for Shared High-Power Transmit Path for a Multi-Protocol Transceiver

• US 20080137566A1
• Filed: 12/31/2006
• Published: 06/12/2008
• Est. Priority Date: 12/06/2006
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Anand, Seema, Pan, Meng-An, Behzad, Arya, Marholev, Bojko
• Application Number:
  US11/618,848
• Publication Number:
  US 20080137566A1
• Time in Patent Office: Days
• US Class Current: 370/310
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04B 2001/0416 having gain or transmission power control
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Aspects of a method and system for a shared high-power transmit path for a multi-protocol transceiver are disclosed. Aspects of one method may include sharing a first power amplifier with a WLAN signal and a Bluetooth signal. The first power amplifier may amplify the WLAN signal and/or the Bluetooth signal simultaneously, or individually. A second power amplifier may be used to amplify the Bluetooth signal, where the first power amplifier may have a higher gain than the second power amplifier. Power may be reduced to the second power amplifier in instances where the first power amplifier is used to amplify the Bluetooth signal. The Bluetooth signal may be communicated to the first power amplifier via a switching circuit, which may comprise one or more switching stages.

Claims

1. A method for processing signals, the method comprising:

sharing a first amplifier by a first wireless signal modulated for a first wireless protocol and a second wireless signal modulated for a second wireless protocol.

2. The method according to claim 1, wherein said first wireless protocol is IEEE 802.11x protocol.

3. The method according to claim 1, wherein said second wireless protocol is Bluetooth protocol.

4. The method according to claim 1, comprising amplifying by said first amplifier, one or both of said first wireless signal and said second wireless signal.

5. The method according to claim 1, comprising simultaneously amplifying by said first amplifier, both of said first wireless signal and said second wireless signal.

6. The method according to claim 1, comprising amplifying said second wireless signal with a second amplifier.

7. The method according to claim 6, wherein said first amplifier provides higher gain than said second amplifier.

8. The method according to claim 6, comprising reducing power to said second amplifier when said first amplifier is amplifying said second wireless signal.

9. The method according to claim 1, comprising communicating said second wireless signal to said first amplifier via a switching circuit.

10. The method according to claim 9, wherein said switching circuit comprise a two-stage switching circuit.

42. The system according to claim 1, wherein a first of said plurality of wireless protocols comprises an IEEE 802.11x protocol.

43. The system according to claim 1, wherein a second of said plurality of wireless protocol comprises Bluetooth protocol.

44. The system according to claim 1, wherein said at least one power amplifier amplifies one or more of said plurality of transmit signals.

45. The system according to claim 1, wherein said at least one power amplifier, simultaneously amplifies two or more of said plurality of transmit signals.

11. A machine-readable storage having stored thereon, a computer program having at least one code section for processing signals, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

sharing a first amplifier by a first wireless signal modulated for a first wireless protocol and a second wireless signal modulated for a second wireless protocol.

12. The machine-readable storage according to claim 11, wherein said first wireless protocol is IEEE 802.11x protocol.

13. The machine-readable storage according to claim 11, wherein said second wireless protocol is Bluetooth protocol.

14. The machine-readable storage according to claim 11, wherein the at least one code section comprises code for enabling amplification of said first wireless signal and said second wireless signal by said first amplifier.

15. The machine-readable storage according to claim 11, wherein the at least one code section comprises code for enabling simultaneous amplification of said first wireless signal and said second wireless signal with said first amplifier.

16. The machine-readable storage according to claim 11, wherein the at least one code section comprises code that enables amplification of said second wireless signal with a second amplifier.

17. The machine-readable storage according to claim 16, wherein said first amplifier provides higher gain than said second amplifier.

18. The machine-readable storage according to claim 16, wherein the at least one code section comprises code for enabling reduction of power to said second amplifier when said first amplifier is amplifying said second wireless signal.

19. The machine-readable storage according to claim 11, wherein the at least one code section comprises code for enabling communication of said second wireless signal to said first amplifier via a switching circuit.

20. The machine-readable storage according to claim 19, wherein said switching circuit comprises a two-stage switching circuit.

21. A system for processing signals, the system comprising:

a first amplifier that enables amplification of a first wireless signal modulated for a first wireless protocol and a second wireless signal modulated for a second wireless protocol.

22. The system according to claim 21, wherein said first wireless protocol is IEEE 802.11x protocol.

23. The system according to claim 21, wherein said second wireless protocol is Bluetooth protocol.

24. The system according to claim 21, wherein said first amplifier enables amplification of one or both of said first wireless signal and said second wireless signal.

25. The method according to claim 21, wherein said first amplifier enables simultaneous amplification of both of said first wireless signal and said second wireless signal.

26. The system according to claim 21, comprising a second amplifier enables amplification of said second wireless signal.

27. The system according to claim 26, wherein said first amplifier provides a higher gain than said second amplifier.

28. The system according to claim 26, comprising one or more circuits that enables reduction of power to said second amplifier when said first amplifier is amplifying said second wireless signal.

29. The system according to claim 21, comprising a switching circuit that enables communication of said second wireless signal to said first amplifier.

30. The system according to claim 29, wherein said switching circuit comprises a two stage switching circuit.

31. A method for processing signals, the method comprising:

sharing at least one power amplifier in a transmit chain of a transmitter by a plurality of transmit signals for a corresponding plurality of wireless protocols.

32. The method according to claim 31, wherein a first of said plurality of wireless protocols comprises an IEEE 802.11x protocol.

33. The method according to claim 31, wherein a second of said plurality of wireless protocol comprises Bluetooth protocol.

34. The method according to claim 31, comprising amplifying by said at least one power amplifier, one or more of said plurality of transmit signals.

35. The method according to claim 31, comprising simultaneously amplifying by said at least one power amplifier, two or more of said plurality of transmit signals.

36. The method according to claim 31, comprising controlling said at least one power amplifier in said transmit chain to operate at optimal efficiency.

37. The method according to claim 36, comprising controlling said at least one power amplifier in said transmit chain to operate at maximum power efficiency.

38. The method according to claim 36, comprising controlling a bias current of said at least one power amplifier in said transmit chain for said optimal operation.

39. The method according to claim 36, comprising controlling a gain of said at least one power amplifier in said transmit for said optimal operation.

40. The method according to claim 36, comprising controlling a linearity of said at least one power amplifier in said transmit for said optimal operation.

41. A system for processing signals, the method comprising:

sharing at least one power amplifier in a transmit chain of a transmitter by a plurality of transmit signals for a corresponding plurality of wireless protocols.

46. The system according to claim 41, wherein said at least one power amplifier in said transmit chain is controlled so as to operate at optimal efficiency.

47. The system according to claim 41, wherein said at least one power amplifier in said transmit chain is controlled so as to operate at maximum power efficiency.

48. The system according to claim 46, wherein a bias current of said at least one power amplifier in said transmit chain is controlled so that said at least one power amplifier provides said optimal operation.

49. The system according to claim 46, wherein a gain of said at least one power amplifier in said transmit chain is controlled so that said at least one power amplifier provides said optimal operation.

50. The system according to claim 46, wherein a linearity of said at least one power amplifier in said transmit chain is controlled so that said at least one power amplifier provides said optimal operation.