RADIO RECEIVER

• US 20090093227A1
• Filed: 03/08/2007
• Published: 04/09/2009
• Est. Priority Date: 03/09/2006
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: De Graaff, Ralph H. A. F., Van Kalsbeek, Dirk N., Egelmeers, Engelbertus C. J.
• Granted Patent: US 8,238,859 B2
• Time in Patent Office: Days
• US Class Current: 455/226.1
• CPC Class Codes: H03H 11/1291 Current or voltage controlled filters
• CPC Class Codes: H03H 11/30 Automatic matching of source impedance to load impedance
• CPC Class Codes: H03H 7/0153 Electrical filters; Controlling thereof
• CPC Class Codes: H03H 7/40 Automatic matching of load impedance to source impedance

Abstract

There is provided a method of configuring a radio receiver, the radio receiver comprising signal receiving means, and at least one adjustable component coupled to the signal receiving means; the method comprising setting the at least one component to a first value selected from a plurality of values; measuring the quality of a signal received via the signal receiving means and the at least one adjustable component; repeating the steps of setting and measuring for at least a second value selected from the plurality of values; and determining the value of the at least one adjustable component that provides the highest measured signal quality.

Claims

1. A method of configuring a radio receiver, the radio receiver comprising signal receiving means, and at least one adjustable component coupled to the signal receiving means;

the method comprising;

setting the at least one component to a first value selected from a plurality of values;

measuring the quality of a signal received via the signal receiving means and the at least one adjustable component;

repeating the steps of setting and measuring for at least a second value selected from the plurality of values; and

determining the value of the at least one adjustable component that provides the highest measured signal quality.

2. A method of configuring a radio receiver as claimed in claim 1, wherein values subsequent to the second value are selected from the plurality of values on the basis of the signal qualities measured for at least two of the preceding values.

3. A method of configuring a radio receiver claimed in claim 1, wherein the step of measuring the quality of a signal comprises measuring a strength of the signal.

4. A method of configuring a radio receiver as claimed in claim 1, wherein the signal received via the signal receiving means and the at least one adjustable component has a known frequency.

5. A method of configuring a radio receiver as claimed in claim 1, wherein the signal received via the signal receiving means and the at least one adjustable component has a known power level.

6. A method of configuring a radio receiver as claimed in claim 4, wherein the first value selected from the plurality of values is determined from the known frequency.

7. A method of configuring a radio receiver as claimed in claim 1, wherein the at least one adjustable component comprises a switchable bank of capacitors.

8. A method of configuring a radio receiver as claimed in claim 1, wherein the at least one adjustable component comprises a switchable bank of varactors.

9. A method of configuring a radio receiver as claimed in claim 1, wherein the at least one adjustable component comprises a controllable combination of a DAC and a varactor.

10. A method of configuring a radio receiver as claimed in claim 1, wherein the steps of setting, measuring, repeating and determining are repeated in order to verify the result of the determining step.

11. A method of configuring a radio receiver as claimed in claim 1, wherein the steps of setting, measuring, repeating and determining are repeated for one or more signals having different frequencies.

12. A radio receiver, comprising:

signal receiving means;

at least one adjustable component coupled to the signal receiving means; and

processing means adapted to;

set the at least one component to a first value selected from a plurality of values;

measure the quality of a signal received via the signal receiving means and the at least one adjustable component;

repeat the steps of setting and measuring for at least a second value selected from the plurality of values; and

determine the value of the at least one adjustable component that provides the highest measured signal quality.

13. A radio receiver as claimed in claim 12, wherein the processing means is further adapted to select values subsequent to the second value from the plurality of values on the basis of the signal quality measured for at least two of the preceding values.

14. A radio receiver as claimed in claim 12, wherein the processing means is adapted to measure the quality of a signal by measuring the strength of the signal.

15. A radio receiver as claimed in claim 12, wherein the signal received via the signal receiving means and the at least one adjustable component has a known frequency.

16. A radio receiver as claimed in claim 15, wherein the signal received via the signal receiving means and the at least one adjustable component has a known power level.

17. A radio receiver as claimed in claim 15, wherein the processing means is adapted to determine the first value from the plurality of values using the known frequency.

18. A radio receiver as claimed in claim 12, wherein the at least one adjustable component comprises a switchable bank of capacitors.

19. A radio receiver as claimed in claim 12, wherein the at least one adjustable component comprises a switchable bank of varactors.

20. A radio receiver as claimed in claim 12, wherein the at least one adjustable component comprises a controllable combination of a DAC and a varactor.

21. A radio receiver as claimed in claim 12, wherein the processing means is adapted to repeat the steps of setting, measuring, repeating and determining in order to verify the result of the determining step.

22. A radio receiver as claimed in claim 12, wherein the processing means is adapted to repeat the steps of setting, measuring, repeating and determining for one or more signals having different frequencies.