METHOD AND SYSTEM FOR UTILIZING DIPLEXER/DUPLEXER FOR WCDMA OPERATION AS A FILTER FOR SUPPORTING GSM-BASED OPERATION

• US 20080081577A1
• Filed: 09/29/2006
• Published: 04/03/2008
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza
• Granted Patent: US 8,340,712 B2
• Time in Patent Office: Days
• US Class Current: 455/187.1
• CPC Class Codes: H04B 1/006 using switches for selecting the desired band H04B1/0057 takes precedence

Abstract

Aspects of a method and system for utilizing a diplexer/duplexer for WCDMA operation as a filter for supporting GSM-based operation are provided. A receiver portion of a wireless device may receive WCDMA signals and GSM signals via at least one duplexer or diplexer. The duplexers may enable bandpass filtering of received GSM signals. The wireless device may enable receiving the WCDMA signals and the GSM signals via a single antenna coupled to the duplexers. The receiver portion may also enable selecting a processing path for received WCDMA signals or a processing path for received GSM signals. The receiver portion may enable amplification and filtering of the WCDMA signals. Filtering of the WCDMA signals may be performed via surface acoustic wave (SAW) filters. The receiver portion may also enable filtering of the GSM signals via the duplexers and amplification of the filtered GSM signals.

Claims

1. A method for handling wireless signals, the method comprising:

receiving a first wireless protocol signals and a second wireless protocol signals via at least one duplexer coupled to a receiver in a wireless device, wherein said at least one duplexer enables bandpass filtering of said received second wireless protocol signals; and

selecting within said receiver one of;

a processing path for said received first wireless protocol signals and a processing path for said received second wireless protocol signals.

2. The method according to claim 1, wherein said first wireless protocol signals is one of:

HSDPA, HSUDPA, and WCDMA wireless protocol signals.

3. The method according to claim 1, wherein said second wireless protocol signals in one of:

GPRS, EDGE, and GSM wireless protocol signals.

4. The method according to claim 1, comprising amplifying said received first wireless protocol signals.

5. The method according to claim 4, comprising filtering said amplified received first wireless protocol signals.

6. The method according to claim 5, wherein said filtering is performed via a surface acoustic wave (SAW) filter.

7. The method according to claim 1, comprising filtering said received second wireless protocol signals via said at least one duplexer.

8. The method according to claim 7, comprising amplifying said filtered received second wireless protocol signals.

9. The method according to claim 1, comprising receiving said first wireless protocol signals and said second wireless protocol signals via a single antenna coupled to said at least one duplexer.

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

receiving a first wireless protocol signals and a second wireless protocol signals via at least one duplexer coupled to a receiver in a wireless device, wherein said at least one duplexer enables bandpass filtering of said received second wireless protocol signals; and

selecting within said receiver one of;

a processing path for said received first wireless protocol signals and a processing path for said received second wireless protocol signals.

11. The machine-readable storage according to claim 10, wherein said first wireless protocol signals is one of:

HSDPA, HSUDPA, and WCDMA wireless protocol signals.

12. The machine-readable storage according to claim 10, wherein said second wireless protocol signals in one of:

GPRS, EDGE, and GSM wireless protocol signals.

13. The machine-readable storage according to claim 10, wherein said at least one code section comprises for controlling amplification of said received first wireless protocol signals.

14. The machine-readable storage according to claim 13, wherein said at least one code section comprises for controlling filtering of said amplified received first wireless protocol signals.

15. The machine-readable storage according to claim 14, wherein said filtering is performed via a surface acoustic wave (SAW) filter.

16. The machine-readable storage according to claim 10, wherein said at least one code section comprises for controlling filtering of said received second wireless protocol signals via said at least one duplexer.

17. The machine-readable storage according to claim 16, wherein said at least one code section comprises for controlling amplification of said filtered received second wireless protocol signals.

18. A system for handling wireless signals, the system comprising:

a receiver in a wireless device that enables receiving a first wireless protocol signals and a second wireless protocol signals via at least one duplexer coupled to said receiver in said wireless device, wherein said at least one duplexer enables bandpass filtering of said received second wireless protocol signals; and

said receiver enables selecting one of;

a processing path for said received first wireless protocol signals and a processing path for said received second wireless protocol signals.

19. The system according to claim 18, wherein said first wireless protocol signals is one of:

HSDPA, HSUDPA, and WCDMA wireless protocol signals.

20. The system according to claim 18, wherein said second wireless protocol signals in one of:

GPRS, EDGE, and GSM wireless protocol signals.

21. The system according to claim 20, wherein said receiver enables amplification of said received first wireless protocol signals.

22. The system according to claim 21, wherein said receiver enables filtering of said amplified received first wireless protocol signals.

23. The system according to claim 22, wherein said receiver enables said filtering via a surface acoustic wave (SAW) filter.

24. The system according to claim 18, wherein said receiver enables filtering of said received second wireless protocol signals via said at least one duplexer.

25. The system according to claim 24, wherein said receiver enables amplification of said filtered received second wireless protocol signals.

26. The system according to claim 25, wherein said wireless device enables receiving said first wireless protocol signals and said second wireless protocol signals via a single antenna coupled to said at least one duplexer.