MULTIPLE FREQUENCY BAND MULTIPLE STANDARD TRANSCEIVER

• US 20120276858A1
• Filed: 06/29/2012
• Published: 11/01/2012
• 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
• Granted Patent: US 8,437,722 B2
• Time in Patent Office: Days
• US Class Current: 455/73
• 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 signal adjust module coupled to receive a Multiple Frequency Bands Multiple Standards (MFBMS) signal including a desired signal component and an undesired signal component, the signal adjust module for substantially reducing adverse affects of the undesired signal component on the desired signal component, the signal adjust module including;

a low noise amplifier module for amplifying the MFBMS signal to produce an amplified MFBMS signal;

a programmable filter module for band pass filtering the amplified MFBMS signal based on a programming signal to produce a band pass filtered MFBMS signal; and

a subtraction module for subtracting the band pass filtered MFBMS signal from the amplified MFBMS signal to produce an adjusted MFBMS signal; and

a down conversion module for converting the adjusted MFBMS signal into a down converted symbol stream.

2. The receiver of claim 1, wherein the MFBMS signal includes the desired signal component and a second desired signal component;

and wherein;

the signal adjust module further functions to substantially reduce adverse affects of the undesired signal component on the desired signal component and the second desired signal component; and

the down conversion module converts 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 comprising:

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 filter module includes:

a filter control module for determining a spectral position of the undesired signal component and generating the programming signal based on the spectral position of the undesired signal component.

5. The receiver of claim 4, wherein the programmable filter module further includes:

a programmable band pass filter for band pass filtering the amplified MFBMS signal based on the programming signal such that the undesired signal component passes substantially unattenuated.

6. The receiver of claim 5, wherein the programmable band pass filter adjusts a band pass filter range of the programmable band pass filter based on the programming signal such that the desired signal component is substantially outside the band pass filter range of the programmable band pass filter.

7. The receiver of claim 6, wherein the programmable band pass filter further adjusts an attenuation property of the programmable band pass filter to substantially attenuate the desired signal component.

8. The receiver of claim 1, wherein the programmable filter module further includes:

a plurality of band pass filters; and

a selection module for determining a spectral position of the undesired signal component and generating 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 band pass filters.

9. The receiver of claim 8, wherein the programmable filter module further includes:

a multiplexer for coupling respective outputs of selected ones of the plurality of band pass filters to the subtraction module as the band pass filtered MFBMS signal based on the programming signal.

10. The receiver of claim 1, further comprising:

a programmable duplexer module for attenuating the undesired signal component with respect to the MFBMS signal based on a duplexer programming signal to produce an attenuated MFBMS signal, the low noise amplifier amplifying the attenuated MFBMS signal to produce the amplified MFBMS signal.

11. 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.

12. The receiver 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.

13. The receiver of claim 12, 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.

14. The receiver of claim 13, 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.

15. The receiver of claim 12, 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; and

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

16. The receiver of claim 15, 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.

17. The receiver of claim 12, 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.

18. A transceiver comprises:

a receiver section that receives a Multiple Frequency Bands Multiple Standards (MFBMS) signal including a desired signal component and an undesired signal component, wherein the receiver section includes a the signal adjust module for substantially reducing adverse affects of the undesired signal component on the desired signal component, the signal adjust module including;

a low noise amplifier module for amplifying the MFBMS signal to produce an amplified MFBMS signal;

a programmable filter module for band pass filtering the amplified MFBMS signal based on a programming signal to produce a band pass filtered MFBMS signal; and

a subtraction module for subtracting the band pass filtered MFBMS signal from the amplified MFBMS signal to produce an adjusted MFBMS signal; and

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

19. The transceiver of claim 18, wherein the transmitter section generates the outbound MFBMS signal based on an orthogonal relationship with the inbound MFBMS signal.

20. The transceiver of claim 18, wherein the receiver section further comprises:

a down conversion module for converting the adjusted MFBMS signal into a down converted signal.