Transceiver and method for combining RFID amplitude-modulated data with wireless phase-modulated data

• US 7,532,908 B2
• Filed: 03/16/2006
• Issued: 05/12/2009
• Est. Priority Date: 03/02/2006
• Status: Expired due to Fees

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza), Shoarinejad, Kambiz
• Primary Examiner(s): Pérez-Gutiérrez; Rafael
• Assistant Examiner(s): Batista; Marcos
• Application Number:
  US11/377,813
• Publication Number:
  US 20070207743A1
• Time in Patent Office: 1,153 Days
• Field of Search: 455/552.1, 455/11.1, 455/41.1
• US Class Current: 455/552.1
• 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 transceiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module operably 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 operably 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 operably coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.

Claims

1. A transceiver, comprising:

a processing module operably 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 operably coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal;

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

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

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

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

3. The transceiver of claim 2, further comprising:

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

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

4. The transceiver 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 transceiver 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 transceiver of claim 3, wherein said RFID RF front end includes at least a portion of said splitter, said RFID RF front end being further operably coupled to convert the amplified combined inbound RF signal into an inbound amplitude modulated near baseband signal.

7. The transceiver of claim 3, wherein said transceiver RF front end includes at least a portion of said splitter, said transceiver RF front end being further operably coupled to convert the amplified combined inbound RF signal into an inbound non-amplitude modulated near baseband signal.

8. The transceiver of claim 3, wherein said splitter is operably coupled to split the combined inbound RF signal into an inbound amplitude modulated RF signal and an inbound non-amplitude modulated RF signal.

9. The transceiver of claim 8, 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.

10. The transceiver of claim 9, wherein said transceiver 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 transceiver baseband processing module.

11. The transceiver of claim 10, wherein said RFID baseband processing module and said transceiver baseband processing module are integrated.

12. The transceiver 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 transceiver baseband processing module is operable to generate an outbound non-amplitude modulated digital signal carrying the outbound non-amplitude modulated symbols.

13. The transceiver of claim 12, 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.

14. The transceiver of claim 13, further comprising:

a digital-to-analog converter operably coupled to convert the combined outbound digital signal into a combined outbound near baseband signal.

15. The transceiver of claim 12, further comprising:

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

a second digital-to-analog converter operably coupled to convert the outbound non-amplitude modulated digital signal into an outbound non-amplitude modulated near baseband signal, and wherein said combiner is operable to combine the outbound non-amplitude modulated near baseband signal with the outbound amplitude modulated near baseband signal to produce a combined outbound near baseband signal.

16. The transceiver of claim 12, further comprising:

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

17. The transceiver of claim 16, further comprising:

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

18. The transceiver 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 transceiver of claim 18, further comprising:

a first digitization module operably 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 transceiver baseband processing module; and

a second digitization module operably 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 transceiver of claim 18, further comprising:

a digitization module operably coupled to convert the combined inbound near baseband signal into a combined inbound digital signal, and wherein said combiner is operably 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.

21. A method for simultaneously operating a wireless communication device in a transceiver mode and a radio frequency identification (RFID) mode, comprising the steps of:

generating outbound non-amplitude modulated symbols from first outbound data;

generating outbound amplitude modulated symbols from second outbound data;

modulating the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal;

receiving a combined inbound RF signal; and

converting the combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.