TRANSMITTER AND RECEIVER FOR COMBINING RFID AMPLITUDE-MODULATED DATA WITH WIRELESS PHASE-MODULATED DATA

• US 20090207025A1
• Filed: 04/27/2009
• Published: 08/20/2009
• Est. Priority Date: 03/02/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: ROFOUGARAN, AHMADREZA (REZA), SHOARINEJAD, KAMBIZ
• Granted Patent: US 8,019,379 B2
• Time in Patent Office: Days
• US Class Current: 340/572.100
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: H04B 1/0053 with common antenna for more than one band
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04B 1/59 Responders; Transponders

Abstract

A transmitter and receiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module coupled to generate outbound non-amplitude modulated symbols from first outbound data, to generate outbound amplitude modulated symbols from second outbound data, to generate first inbound data from inbound non-amplitude modulated symbols, and to generate second inbound data from inbound amplitude modulated symbols, a combiner coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal and a splitter coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.

Claims

1. A transmitter, comprising:

a processing module operable to generate outbound non-amplitude modulated symbols from first outbound data and to generate outbound amplitude modulated symbols from second outbound data;

a combiner coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal; and

a power amplifier module coupled to amplify the combined outbound RF signal.

2. The transmitter of claim 1, wherein said processing module includes a radio frequency identification (RFID) baseband processing module operable to generate the outbound amplitude modulated symbols and a transmitter baseband processing module operable to generate the outbound non-amplitude modulated symbols.

3. The transmitter of claim 2, further comprising:

an RFID RF front end coupled to convert the outbound amplitude modulated symbols into an outbound amplitude modulated RF signal; and

a transmitter RF front end coupled to convert the outbound non-amplitude modulated symbols into an outbound non-amplitude modulated RF signal.

4. The transmitter of claim 3, wherein said combiner is operable to combine the outbound amplitude modulated RF signal with the outbound non-amplitude modulated RF to produce the combined outbound RF signal.

5. The transmitter of claim 3, wherein said power amplifier includes said combiner, said power amplifier being further operable to modulate the outbound amplitude modulated RF signal on the outbound non-amplitude modulated RF signal to produce the combined outbound RF signal.

6. The transmitter of claim 2, wherein said RFID baseband processing module is operable to generate an outbound amplitude-modulated digital signal carrying the outbound amplitude modulated symbols and said transmitter baseband processing module is operable to generate an outbound non-amplitude modulated digital signal carrying the outbound non-amplitude modulated symbols.

7. The transmitter of claim 6, wherein said combiner is operable to combine the outbound amplitude-modulated digital signal with the outbound non-amplitude modulated digital signal to produce a combined outbound digital signal.

8. The transmitter of claim 7, further comprising:

a digital-to-analog converter coupled to convert the combined outbound digital signal into a combined outbound analog signal; and

an up-conversion module operable to convert the combined outbound analog signal to the combined outbound RF signal.

9. The transmitter of claim 6, further comprising:

a first digital-to-analog converter coupled to convert the outbound amplitude modulated digital signal into an outbound amplitude modulated analog signal;

a second digital-to-analog converter coupled to convert the outbound non-amplitude modulated digital signal into an outbound non-amplitude modulated analog signal;

said combiner is operable to combine the outbound non-amplitude modulated analog signal with the outbound amplitude modulated analog signal to produce a combined outbound analog signal; and

an up-conversion module operable to convert the combined outbound analog signal to the combined outbound RF signal.

10. A receiver, comprising:

a low noise amplifier module coupled to amplify a combined inbound RF signal to produce an amplified combined inbound RF signal;

a splitter coupled to convert the amplified combined inbound RF signal into the inbound non-amplitude modulated symbols and into the inbound amplitude modulated symbols; and

a processing module operable to generate first inbound data from the inbound non-amplitude modulated symbols and to generate second inbound data from the inbound amplitude modulated symbols.

11. The receiver of claim 10, wherein said processing module includes a radio frequency identification (RFID) baseband processing module operable to generate the second inbound data and a receiver baseband processing module operable to generate the first inbound data.

12. The receiver of claim 11, further comprising:

an RFID RF front end coupled to convert the inbound amplitude modulated symbols into an inbound amplitude modulated near baseband signal for input to the RFID baseband processing module; and

a transmitter RF front end coupled to convert the inbound non-amplitude modulated symbols into an inbound non-amplitude modulated near baseband signal for input to the receiver baseband processing module.

13. The receiver of claim 12, wherein said RFID RF front end and said receiver RF front end each include at least a portion of said splitter.

14. The receiver of claim 13, wherein said splitter is coupled to split the amplified combined inbound RF signal into an inbound amplitude modulated RF signal and an inbound non-amplitude modulated RF signal.

15. The receiver of claim 14, wherein said RFID RF front end is further operable to convert the inbound amplitude modulated RF signal into an inbound amplitude modulated near baseband signal and to provide the inbound amplitude modulated near baseband signal to said RFID baseband processing module.

16. The receiver of claim 15, wherein said receiver RF front end is further operable to convert the inbound non-amplitude modulated RF signal into an inbound non-amplitude modulated near baseband signal and to provide the inbound non-amplitude modulated near baseband signal to said receiver baseband processing module.

17. The receiver of claim 11, further comprising:

a down-conversion module operable to convert the amplified combined inbound RF signal into a combined inbound near baseband signal.

18. The receiver of claim 17, wherein said splitter is operable to split the combined inbound near baseband signal into an inbound amplitude-modulated near baseband signal and an inbound non-amplitude modulated near baseband signal.

19. The receiver of claim 18, further comprising:

a first digitization module coupled to convert the inbound non-amplitude modulated near baseband signal into an inbound non-amplitude modulated digital signal and to provide the inbound non-amplitude modulated digital signal to said receiver baseband processing module; and

a second digitization module coupled to convert the inbound amplitude modulated near baseband signal into an inbound amplitude modulated digital signal and to provide the inbound amplitude modulated digital signal to said RFID baseband processing module.

20. The receiver of claim 17, further comprising:

a digitization module coupled to convert the combined inbound near baseband signal into a combined inbound digital signal, and wherein said combiner is coupled to split said combined inbound digital signal into an inbound amplitude modulated digital signal for providing to said RFID baseband processing module and an inbound non-amplitude modulated digital signal for providing to said transceiver baseband processing module.