Multiple frequency band multiple standard transceiver

• US 8,233,870 B2
• Filed: 12/04/2008
• Issued: 07/31/2012
• Est. Priority Date: 12/04/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Walley, John, Karaoguz, Jeyhan, Ibrahim, Brima B., Behzad, Arya Reza, Erceg, Vinko, Rosmann, David
• Primary Examiner(s): Tra, Quan
• Application Number:
  US12/328,560
• Publication Number:
  US 20100144288A1
• Time in Patent Office: 1,335 Days
• Field of Search: 455/266
• US Class Current: 455/266
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 1/1638 Special circuits to enhance selectivity of receivers not otherwise provided for resonant circuits H03H

Abstract

A transceiver includes a receiver section and a transmitter section. The receiver section converts an inbound Multiple Frequency Bands Multiple Standards (MFBMS) signal into a down converted signal, wherein the inbound MFBMS signal includes a desired signal component and an undesired signal component. In addition, the receiver section determines spectral positioning of the undesired signal component with respect to the desired signal component and adjusts at least one of the MFBMS signal and the down converted signal based on the spectral positioning to substantially reduce adverse affects of the undesired signal component on the desired signal component to produce an adjusted signal. The transmitter section converts an outbound symbol stream into an outbound MFBMS signal.

Claims

1. A receiver comprises:

a signal adjust module having a programmable duplexer module coupled to receive a Multiple Frequency Bands Multiple Standards (MFBMS) signal, wherein the MFBMS signal includes a desired signal component, a second desired signal component and an undesired signal component, the programmable duplexer module including;

a plurality of duplexers, each selectively coupled, based on a programming signal, to adjust the MFBMS signal to substantially reduce adverse effects of the undesired signal component on the desired signal component and the second desired signal component to produce an adjusted MFBMS signal; and

a selection module that functions to;

determine spectral positioning of the undesired signal component with respect to the desired signal component and the second desired signal component; and

generate the programming signal based on the spectral position of the undesired signal component, wherein the programming signal selects one or more of the plurality of duplexers; and

a down conversion module coupled to convert the adjusted MFBMS signal into a down converted symbol stream.

2. The receiver of claim 1 wherein

the down conversion module is coupled to convert the adjusted MFBMS signal into the down converted symbol stream including a first symbol stream corresponding to the desired signal component and a second symbol stream corresponding to the second desired signal component.

3. The receiver of claim 2 further comprises:

a baseband processing module coupled to convert the first symbol stream into a first inbound signal in accordance with a first standard of the multiple standards and to convert the second symbol stream into a second inbound signal in accordance with a second standard of the multiple standards.

4. The receiver of claim 1, wherein the programmable duplexer module is coupled to attenuate the undesired signal component with respect to the MFBMS signal based on the programming signal to produce an attenuated MFBMS signal and wherein the signal adjust module further includes:

a low noise amplifier (LNA) module coupled to amplify the attenuated MFBMS signal to produce the adjusted MFBMS signal.

5. The receiver of claim 4, wherein the programmable duplexer module further comprises:

a multiplexer for coupling respective outputs of selected ones of the plurality of duplexers to the LNA module based on the programming signal.

6. The receiver of claim 5, wherein the low noise amplifier module includes a plurality of low noise amplifiers, and wherein the multiplexer couples the respective outputs of the selected ones of the plurality of duplexers to one or more of the plurality of low noise amplifiers based on the programming signal.

7. The receiver of claim 1 wherein the signal adjust module further functions to:

determine the spectral positioning of the undesired signal component with respect to the desired signal component;

determine whether the spectral positioning of the undesired signal component is outside a frequency band that includes the desired signal component; and

when the spectral positioning of the undesired signal component is outside the frequency band that includes the desired signal component, adjust bandwidth of the signal adjust module such that the undesired signal component is outside the bandwidth of the signal adjust module to produce the adjusted MFBMS signal.

20. The receiver of claim 1 wherein each of the plurality of duplexers has a different frequency response for attenuating a corresponding undesired frequency, the undesired signal including at least one undesired frequency.

21. The receiver of claim 1 wherein the selection module includes:

a duplexer control module coupled to receive the down converted signal during a calibration phase and to generate the programming signal based on the spectral position of the undesired signal component in the down converted signal.

8. A transceiver comprises:

a receiver section that converts an inbound Multiple Frequency Bands Multiple Standards (MFBMS) signal into a down converted signal, wherein the inbound MFBMS signal includes a desired signal component, a second desired signal component and an undesired signal component, wherein the receiver section includes a signal adjust module having a programmable duplexer module, the programmable duplexer module including;

a plurality of duplexers, each selectively coupled, based on a programming signal, to adjust the MFBMS signal to substantially reduce adverse effects of the undesired signal component on the desired signal component and the second desired signal component to produce an adjusted MFBMS signal; and

a selection module that is operable to;

determine spectral positioning of the undesired signal component with respect to the desired signal component and the second desired signal component; and

generate the programming signal based on the spectral position of the undesired signal component, wherein the programming signal selects one or more of the plurality of duplexers; and

a transmitter section coupled to convert an outbound symbol stream into an outbound MFBMS signal.

9. The transceiver of claim 8 further comprises:

the transmitter section generating the outbound MFBMS signal based on an orthogonal relationship with the inbound MFBMS signal.

10. The transceiver of claim 8, wherein the receiver section further comprises:

a down conversion module coupled to convert the adjusted MFBMS signal into the down converted signal.

11. The transceiver of claim 10 wherein

the down conversion module is coupled to convert the adjusted MFBMS signal into the down converted symbol stream including a first symbol stream corresponding to the desired signal component and a second symbol stream corresponding to the second desired signal component.

12. The transceiver of claim 11 further comprises:

a baseband processing module coupled to convert the first symbol stream into a first inbound signal in accordance with a first standard of the multiple standards and to convert the second symbol stream into a second inbound signal in accordance with a second standard of the multiple standards.

13. The transceiver of claim 8 wherein the programmable duplexer module is coupled to attenuate the undesired signal component with respect to the MFBMS signal based on the programming signal to produce an attenuated MFBMS signal.

14. The transceiver of claim 13 wherein the signal adjust module further includes:

a low noise amplifier (LNA) module coupled to amplify the attenuated MFBMS signal to produce the adjusted MFBMS signal.

15. The transceiver of claim 14 wherein the programmable duplexer module further comprises:

a multiplexer for coupling respective outputs of selected ones of the plurality of duplexers to the LNA module based on the programming signal.

16. The transceiver of claim 15 wherein the low noise amplifier module includes a plurality of low noise amplifiers, and wherein the multiplexer couples the respective outputs of the selected ones of the plurality of duplexers to one or more of the plurality of low noise amplifiers based on the programming signal.

17. The transceiver of claim 8 wherein the selection module includes:

a duplexer control module coupled to receive the down converted signal during a calibration phase of the receiver section and to generate the programming signal based on the spectral position of the undesired signal component in the down converted signal.

18. The transceiver of claim 8 wherein each of the plurality of duplexers has a different frequency response for attenuating a corresponding undesired frequency, the undesired signal including at least one undesired frequency.

19. The transceiver of claim 8 wherein the signal adjust module further functions to:

determine the spectral positioning of the undesired signal component with respect to the desired signal component;

determine whether the spectral positioning of the undesired signal component is outside a frequency band that includes the desired signal component; and

when the spectral positioning of the undesired signal component is outside the frequency band that includes the desired signal component, adjust bandwidth of the signal adjust module such that the undesired signal component is outside the bandwidth of the signal adjust module to produce the adjusted MFBMS signal.