Method and system for a wideband polar transmitter

• US 8,036,308 B2
• Filed: 02/28/2007
• Issued: 10/11/2011
• Est. Priority Date: 02/28/2007
• Status: Expired due to Fees

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza
• Primary Examiner(s): Fan; Chieh M
• Assistant Examiner(s): Garcia; Santiago
• Application Number:
  US11/680,165
• Publication Number:
  US 20080205549A1
• Time in Patent Office: 1,686 Days
• Field of Search: 375/300, 375/299, 370/201, 330/149
• US Class Current: 375/300
• CPC Class Codes: H04L 27/3405 Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
• CPC Class Codes: H04L 27/361 Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
• CPC Class Codes: H04L 27/367 using predistortion

Abstract

Certain aspects of a method and system for a wideband polar transmitter may be disclosed. Aspects of the method may include polar modulating a plurality of signals by generating a plurality of modulated intermediate frequency (IF) signals corresponding to each of a plurality of wireless communication protocols within a transmitter that handles the plurality of wireless communication protocols. The generated plurality of modulated IF signals may be upconverted to a plurality of radio frequency (RF) signals. The plurality of RF signals may be combined and the combined plurality of RF signals may be amplitude modulated.

Claims

1. A method for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the method comprising:

polar modulating, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication protocols and to generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

up-converting said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals;

combining said plurality of RF signals; and

amplitude modulating said combined plurality of RF signals and said generated plurality of amplitude signals.

2. The method according to claim 1, wherein said plurality of wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

3. The method according to claim 1, comprising phase modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers.

4. The method according to claim 1, comprising frequency modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers.

5. The method according to claim 1, comprising selecting a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

6. The method according to claim 1, comprising amplitude modulating said generated plurality of modulated IF signals.

7. A system for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the system comprising:

one or more circuits that are operable to polar modulate, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication protocols and to generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

said one or more circuits are operable to up-convert said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals;

said one or more circuits are operable to combine said plurality of RF signals; and

said one or more circuits are operable to amplitude modulate said combined plurality of RF signals and said generated plurality of amplitude signals.

8. The system according to claim 7, wherein said plurality of different wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

9. The system according to claim 7, wherein said one or more circuits are operable to phase modulate said generated plurality of modulated IF signals.

10. The system according to claim 7, wherein said one or more circuits are operable to frequency modulate said generated plurality of modulated IF signals.

11. The system according to claim 7, wherein said one or more circuits are operable to select a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

12. The system according to claim 7, wherein said one or more circuits are operable to amplitude modulate said generated plurality of modulated IF signals.

13. A non-transitory machine-readable storage having stored thereon,

a computer program having at least one code section for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

polar modulating, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication protocols and to generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

up-converting said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals;

combining said plurality of RF signals; and

amplitude modulating said combined plurality of RF signals and said generated plurality of amplitude signals.

14. The non-transitory machine-readable storage according to claim 13, wherein said plurality of different wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

15. The non-transitory machine-readable storage according to claim 13, wherein said at least one code section comprises code for phase modulating said generated plurality of modulated IF signals.

16. The non-transitory machine-readable storage according to claim 13, wherein said at least one code section comprises code for frequency modulating said generated plurality of modulated IF signals.

17. The non-transitory machine-readable storage according to claim 13, wherein said at least one code section comprises code for selecting a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

18. The non-transitory machine-readable storage according to claim 13, wherein said at least one code section comprises code for amplitude modulating said generated plurality of modulated IF signals.

19. A method for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the method comprising:

polar modulating, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication protocols and to, generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

frequency modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers;

up-converting said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals; and

combining said plurality of RF signals; and

amplitude modulating said combined RF signals and said generated plurality of amplitude signals.

20. The method according to claim 19, wherein said different plurality of wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

21. The method according to claim 19, comprising phase modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers.

22. The method according to claim 19, comprising selecting a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

23. The method according to claim 19, comprising amplitude modulating said generated plurality of modulated IF signals.

24. A system for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the system comprising:

one or more circuits that are operable to polar modulate, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication and to generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

said one or more circuits are operable to frequency modulate said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers;

said one or more circuits are operable to up-convert said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals; and

combining said plurality of RF signals; and

said one or more circuits are operable to amplitude modulate said combined RF signals and said generated plurality of amplitude signals.

25. The system according to claim 24, wherein said plurality of different wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

26. The system according to claim 24, wherein said one or more circuits are operable to phase modulate said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers.

27. The system according to claim 24, wherein said one or more circuits are operable to select a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

28. The system according to claim 24, wherein said one or more circuits are operable to amplitude modulate said generated plurality of modulated IF signals.

29. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for processing communication signals in a transmitter that handles a plurality of different wireless communication protocols, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

polar modulating, utilizing one or more direct digital frequency synthesizers, a plurality of signals to generate a plurality of modulated intermediate frequency (IF) signals corresponding to each of said plurality of different wireless communication protocols and to generate a plurality of amplitude signals corresponding to each of said plurality of different wireless communication protocols;

frequency modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers;

up-converting said generated plurality of modulated IF signals to a plurality of radio frequency (RF) signals; and

combining said plurality of RF signals; and

amplitude modulating said combined RF signals and said generated plurality of amplitude signals.

30. The non-transitory machine-readable storage according to claim 29, wherein said plurality of different wireless communication protocols comprises of:

a Bluetooth communication protocol, a wireless local area network (WLAN) communication protocol and/or a ZigBee communication protocol.

31. The non-transitory machine-readable storage according to claim 29, wherein said at least one code section comprises code for phase modulating said generated plurality of modulated IF signals utilizing said one or more direct digital frequency synthesizers.

32. The non-transitory machine-readable storage according to claim 29, wherein said at least one code section comprises code for selecting a particular frequency channel corresponding to each of said plurality of wireless communication protocols.

33. The non-transitory machine-readable storage according to claim 29, wherein said at least one code section comprises code for amplitude modulating said generated plurality of modulated IF signals.