Adaptive radio transceiver with calibration

• US 7,139,540 B2
• Filed: 04/15/2005
• Issued: 11/21/2006
• Est. Priority Date: 10/21/1999
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Pan, Meng-An, Rofougaran, Ahmadreza, Wu, Stephen, Ibrahim, Brima, Chien (Ed Chien), Hung-Ming
• Primary Examiner(s): Milord, Marceau
• Application Number:
  US11/107,080
• Publication Number:
  US 20050181754A1
• Time in Patent Office: 585 Days
• Field of Search: 455/251.1, 455/76, 455/86, 455/78
• US Class Current: 455/251.1
• CPC Class Codes: H03H 11/1291 Current or voltage controlled filters
• CPC Class Codes: H03H 2011/0494 Complex filters
• CPC Class Codes: H03H 21/0001 Analogue adaptive filters
• CPC Class Codes: H03H 21/0012 Digital adaptive filters
• CPC Class Codes: H03J 2200/10 Tuning of a resonator by means of digitally controlled capacitor bank

Abstract

An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Claims

1. A single integrated chip in a wireless transceiver, comprising:

a calibration circuit that comprises

a first component,

a digitally tunable second component,

a current source operatively coupled to the first component to generate a first parameter of the first component and operatively coupled to the second component to generate a second parameter of the second component, and

a logic control block that digitally tunes the second component as a function of the first parameter and the second parameter.

2. The single integrated chip according to claim 1, wherein the current source provides a first current to the first component and a second current to the second component.

3. The single integrated chip according to claim 2, wherein the first current is substantially equal to the second current.

4. The single integrated chip according to claim 1, wherein the current source comprises a current mirror having a first output and a second output, the first output being operatively coupled to the first component, the second output being operatively coupled to the second component.

5. The single integrated chip according to claim 1,

wherein the first parameter comprises a first voltage, and

wherein the second parameter comprises a second voltage.

6. The single integrated chip according to claim 5, wherein the logic control block comprises a comparator and control logic, the comparator being adapted to compare the first voltage and the second voltage, the control logic being adapted to digitally tune the second component as a function of the comparing of the first voltage and the second voltage.

7. The single integrated chip according to claim 1, wherein the first component comprises a resistor.

8. The single integrated chip according to claim 7, wherein the second component comprises a second resistor.

9. The single integrated chip according to claim 8, wherein the second resistor comprises a tunable resistor array.

10. The single integrated chip according to claim 9, wherein the tunable resistor array comprises a plurality of resistors and a plurality of switches, at least two resistors being operatively coupled in series, at least one switch being operatively coupled across at least one resistor.

11. The single integrated chip according to claim 10, wherein the logic control block generates a plurality of digital bits as a function of the first parameter and the second parameter.

12. The singe integrated chip according to claim 11, wherein each digital bit controls a different one of the switches.

13. The single integrated chip according to claim 7, wherein the second component comprises a capacitor.

14. The single integrated chip according to claim 13, wherein the capacitor comprises a tunable capacitor array.

15. The single integrated chip according to claim 14, wherein the tunable capacitor array comprises a plurality of capacitors and a plurality of switches, at least two capacitors being operatively coupled in parallel, at least one switch being operatively coupled in series with one of the capacitors.

16. The single integrated chip accenting to claim 15, wherein the logic control block generates a plurality of digital bits as a function of the first parameter and the second parameter.

17. The single integrated chip according to claim 16, wherein each digital bit controls a different one of the switches.

18. The single integrated chip according to claim 13, wherein the calibration circuit comprises a first switch and a second switch, the first switch being operatively coupled between the current source and the capacitor, the second switch shunting the capacitor.

19. The single integrated chip according to claim 18, wherein the logic control block controls the first switch and the second switch.

20. The single integrated chip according to claim 1, wherein the wireless transceiver is pan of a wireless communications device that performs orthogonal frequency division multiplexing.

21. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that performs spread spectrum modulation.

22. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that performs frequency hopping.

23. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that performs direct sequence spread spectrum modulation.

24. The single integrated chip according to claim 1, wherein the calibration circuit comprises CMOS circuitry.

25. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that can be programmed to support a plurality of different wireless spread spectrum modulation techniques.

26. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that supports a plurality of different wireless spread spectrum modulation techniques.

27. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using spread spectrum modulation.

28. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using direct sequence spread spectrum modulation.

29. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using frequency hopping.

30. The single integrated chip according to claim 1, wherein the wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing, wireless communications using frequency hopping and wireless communications using direct sequence spread spectrum modulation.

31. The adaptive wireless transceiver according to claim 1, wherein the calibration circuit comprises CMOS circuitry.

32. An adaptive wireless transceiver, comprising:

an off-chip first component; and

an integrated circuit chip that comprises

a calibration circuit that comprises

a digitally tunable second component.

a current source operatively coupled to the first component to generate a first parameter of the first component and operatively coupled to the second component to generate a second parameter of the second component, and

a logic control block that digitally tunes the second component as a function of the first parameter and the second parameter.

33. The adaptive wireless transceiver according to claim 32, wherein the first component or the second component comprises a resistor.

34. The adaptive wireless transceiver according to claim 33, wherein the resistor comprises a tunable resistor array.

35. The adaptive wireless transceiver according to claim 32, wherein the second component comprises a capacitor.

36. The single integrated chip according to claim 35, wherein the capacitor comprises a tunable capacitor array.

37. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that performs orthogonal frequency division multiplexing.

38. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that performs spread spectrum modulation.

39. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that performs frequency hopping.

40. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that performs direct sequence spread spectrum modulation.

41. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that can be programmed to support a plurality of different wireless spread spectrum modulation techniques.

42. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is pan of a wireless communications device that supports a plurality of different wireless spread spectrum modulation techniques.

43. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using spread spectrum modulation.

44. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using direct sequence spread spectrum modulation.

45. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing and wireless communications using frequency hopping.

46. The adaptive wireless transceiver according to claim 32, wherein the adaptive wireless transceiver is part of a wireless communications device that supports wireless communications using orthogonal frequency division multiplexing, wireless communications using frequency hopping and wireless communications using direct sequence spread spectrum modulation.