MULTIPLE FREQUENCY BAND MULTIPLE STANDARD TRANSCEIVER

• US 20130237169A1
• Filed: 04/10/2013
• Published: 09/12/2013
• 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 Babatunde, Behzad, Arya Reza, Erceg, Vinko, Rosmann, David
• Granted Patent: US 8,626,100 B2
• Time in Patent Office: Days
• US Class Current: 455/234.1
• 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, comprising:

a low noise amplifier module coupled to receive and amplify a Multiple Frequency Bands Multiple Standards (MFBMS) signal to produce an amplified MFBMS signal;

a down conversion module for converting the amplified MFBMS signal into a down converted signal, wherein the down converted signal includes a desired signal component and an undesired signal component; and

a signal adjust module for determining spectral positioning of the undesired signal component with respect to the desired signal component and adjusting 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 down converted signal.

2. The receiver of claim 1, wherein the signal adjust module includes:

an isolation module for isolating the undesired signal component from the down converted signal to produce an isolated signal component; and

a subtraction module for subtracting the isolated signal component from the down converted signal to produce the adjusted down converted signal.

3. The receiver of claim 2, wherein the isolation module further includes:

a plurality of filters for filtering the down converted signal to produce a plurality of filtered signal components;

a plurality of analog to digital converters coupled to convert the plurality of filtered signal components into a plurality of digital filtered signals, wherein one of the plurality of digital filtered signals corresponds to the isolated signal component; and

a successive interference cancellation module for processing the one of the plurality of digital filtered signals to produce a digital version of the isolated signal component.

4. The receiver of claim 3, wherein the subtraction module further includes:

a phase shift module for phase shifting the digital version of the isolated signal component to produce a phase shifted digital isolated signal component;

a digital to analog converter for converting the phase shifted digital isolated signal component into a phase shifted analog isolated signal component; and

a subtracter for subtracting the phase shifted analog isolated signal component from the down converted signal to produce the adjusted down converted signal.

5. The receiver of claim 4, wherein the phase shifter phase shifts the digital version of the isolated signal component to adjust for timing differences in a feedback path from the plurality of analog to digital converters to the subtracter.

6. The receiver of claim 4, further comprising:

a baseband processing module for converting the adjusted down converted signal into an inbound signal in accordance with one of the multiple standards;

wherein the subtracter is coupled to one of the plurality of filters having an output coupled to one of the analog to digital converters that is coupled to the baseband processing module.

7. The receiver of claim 1, wherein the isolation module further includes:

a plurality of filters for filtering the down converted signal to produce a plurality of filtered signal components;

a plurality of analog to digital converters for converting the plurality of filtered signal components into a plurality of digital filtered signals, wherein one of the plurality of digital filtered signals corresponds to the isolated signal component;

a multiplexer for outputting the one of the plurality of digital filtered signals corresponding to the isolated signal component; and

a cancellation module for processing the one of the plurality of digital filtered signals corresponding to the isolated signal component to produce a digital version of the isolated signal component.

8. The receiver of claim 7, wherein the subtraction module further includes:

a phase shift module for phase shifting the digital version of the isolated signal component to produce a phase shifted digital isolated signal component;

a digital to analog converter for converting the phase shifted digital isolated signal component into a phase shifted analog isolated signal component; and

a subtracter for subtracting the phase shifted analog isolated signal component from the down converted signal to produce the adjusted down converted signal.

9. The receiver of claim 7, wherein the isolation module further includes:

an additional multiplexer coupled to the plurality of analog to digital converters and configured to output the adjusted down converted signal.

10. The receiver of claim 9, further comprising:

a baseband processing module for converting the adjusted down converted signal into an inbound signal in accordance with one of the multiple standards.

11. A transceiver comprising:

a receiver that receives an inbound Multiple Frequency Bands Multiple Standards (MFBMS) signal including a desired signal component and an undesired signal component, the receiver including;

a low noise amplifier module coupled to receive and amplify the inbound MFBMS signal to produce an amplified MFBMS signal;

a down conversion module for converting the amplified MFBMS signal into a down converted signal; and

a signal adjust module for determining spectral positioning of the undesired signal component with respect to the desired signal component and adjusting 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 down converted signal; and

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

12. The transceiver of claim 11, wherein the transmitter generates the outbound MFBMS signal based on an orthogonal relationship with the inbound MFBMS signal.

13. The transceiver of claim 11, wherein the signal adjust module includes:

an isolation module for isolating the undesired signal component from the down converted signal to produce an isolated signal component; and

a subtraction module for subtracting the isolated signal component from the down converted signal to produce the adjusted down converted signal.

14. The transceiver of claim 13, wherein the isolation module further includes:

a plurality of filters for filtering the down converted signal to produce a plurality of filtered signal components;

a plurality of analog to digital converters coupled to convert the plurality of filtered signal components into a plurality of digital filtered signals, wherein one of the plurality of digital filtered signals corresponds to the isolated signal component; and

a successive interference cancellation module for processing the one of the plurality of digital filtered signals to produce a digital version of the isolated signal component.

15. The transceiver of claim 14, wherein the subtraction module further includes:

a phase shift module for phase shifting the digital version of the isolated signal component to produce a phase shifted digital isolated signal component;

a digital to analog converter for converting the phase shifted digital isolated signal component into a phase shifted analog isolated signal component; and

a subtracter for subtracting the phase shifted analog isolated signal component from the down converted signal to produce the adjusted down converted signal.

16. The transceiver of claim 15, further comprising:

a baseband processing module for converting the adjusted down converted signal into an inbound signal in accordance with one of the multiple standards;

wherein the subtracter is coupled to one of the plurality of filters having an output coupled to one of the analog to digital converters that is coupled to the baseband processing module.

17. The transceiver of claim 11, wherein the isolation module further includes:

a plurality of filters for filtering the down converted signal to produce a plurality of filtered signal components;

a plurality of analog to digital converters for converting the plurality of filtered signal components into a plurality of digital filtered signals, wherein one of the plurality of digital filtered signals corresponds to the isolated signal component;

a multiplexer for outputting the one of the plurality of digital filtered signals corresponding to the isolated signal component; and

a cancellation module for processing the one of the plurality of digital filtered signals corresponding to the isolated signal component to produce a digital version of the isolated signal component.

18. The transceiver of claim 17, wherein the subtraction module further includes:

a phase shift module for phase shifting the digital version of the isolated signal component to produce a phase shifted digital isolated signal component;

a digital to analog converter for converting the phase shifted digital isolated signal component into a phase shifted analog isolated signal component; and

a subtracter for subtracting the phase shifted analog isolated signal component from the down converted signal to produce the adjusted down converted signal.

19. The transceiver of claim 17, wherein the isolation module further includes:

an additional multiplexer coupled to the plurality of analog to digital converters and configured to output the adjusted down converted signal.

20. A signal adjust module for use within a receiver, the signal adjust module comprising:

an isolation module for receiving a down converted Multiple Frequency Bands Multiple Standards (MFBMS) signal including a desired signal component and an undesired signal component, the isolation module further for determining spectral positioning of the undesired signal component with respect to the desired signal component and isolating the undesired signal component from the down converted MFBMS signal to produce an isolated signal component; and

a subtraction module for substantially reducing adverse affects of the undesired signal component on the desired signal component by subtracting the isolated signal component from the down converted MFBMS signal to produce an adjusted down converted signal.