Detection and compensation of dielectric resonator oscillator frequency drift

Patent metadata

Field	Value
Publication number	US-9461651-B2
Application number	US-201514607789-A
Country	US
Kind code	B2
Filing date	Jan 28, 2015
Priority date	Jan 30, 2014
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

Systems and methods are provided for detection and compensation of dielectric resonator oscillator frequency drift. DRO frequency drift detection and compensation may be applied in a system (e.g., outdoor unit) during handling of received signals. The DRO frequency drift detection and compensation may comprise, for each input signal, obtaining DRO frequency drift related information, related to the input signal; determining, based on the obtained DRO frequency drift related information, one or more adjustments applicable to processing of the input signal and/or the generation of the output signal using the at least portion of the input signal; and applying the one or more adjustments. The DRO frequency drift detection and compensation may be applied continually, occasionally, and/or periodically.

First claim

What is claimed is:

1. A system comprising:
one or more circuits for use in handling received signals, said one or more circuits being operable to:
receive an input signal;
process said input signal;
generate an output signal comprising at least a portion of said input signal and one or more other portions from one or more other input signals; and
apply dielectric resonator oscillator (DRO) frequency drift detection and compensation, wherein said DRO frequency drift detection and compensation comprises:
determining DRO frequency drift for said input signal by:
detecting one or more channels in said input signal;
determining frequency offset for each channel of said one or more detected channels; and
determining said DRO frequency drift based on combining frequency offsets of said one or more detected channels;

determining, based on said obtained DRO frequency drift, one or more adjustments applicable to-said generation of said output signal using said at least portion of said input signal; and
apply said one or more adjustments.

2. The system of claim 1 , wherein said one or more circuits are operable to determine said DRO frequency drift based on analysis of an intermediate signal generated during said processing of said input signal.

3. The system of claim 2 , wherein said one or more circuits are operable to process said intermediate signal to make it suitable for said analysis.

4. The system of claim 3 , wherein said processing of said intermediate signal comprises applying signal spectrum estimation and conversion to frequency domain.

5. The system of claim 2 , wherein said one or more circuits are operable to, during said analysis, determine for each detected channel, an upper edge frequency and a lower edge frequency.

6. The system of claim 5 , wherein said one or more adjustments comprise at least one adjustment relating to optimizing capturing at least one of said one or more detected channels, for inclusion in said output signal.

7. The system of claim 5 , wherein said one or more circuits are operable to determine, during said analysis, a center frequency for each detected channel, based on said upper edge frequency and said lower edge frequency.

8. The system of claim 7 , wherein said one or more circuits are operable to determine, during said analysis, a frequency offset for each detected channel, based on said determined center frequency.

9. The system of claim 8 , wherein said one or more circuits are operable to determine, during said analysis, an overall frequency offset for said input signal based on determined frequency offsets for all detected channels.

10. The system of claim 1 , wherein said one or more circuits are operable to apply said DRO frequency drift detection and compensation continually, occasionally, and/or periodically.

11. The system of claim 1 , wherein said one or more circuits are operable to synchronize applying of said one or more adjustments to different circuits used during one or more of said receiving of said input signal, said processing of said input signal, and said receiving of said output signal.

12. A method for handling reception of one or more signals in an electronic system, the method comprising:
receiving an input signal;
processing said input signal;
generating an output signal comprising at least a portion of said input signal and one or more other portions from one or more other input signals; and
applying dielectric resonator oscillator (DRO) frequency drift detection and compensation, wherein said DRO frequency drift detection and compensation comprises:
determining DRO frequency drift for said input signal by:
detecting one or more channels in said input signal;
determining frequency offset for each channel of said one or more detected channels; and
determining said DRO frequency drift based on combining frequency offsets of said one or more detected channels;

determining, based on said obtained DRO frequency drift, one or more adjustments applicable to said generation of said output signal using said at least portion of said input signal; and
applying said one or more adjustments.

13. The method of claim 12 , comprising determining said DRO frequency drift based on analysis of an intermediate signal generated during said processing of said input signal.

14. The method of claim 13 , comprising processing said intermediate signal to make it suitable for said analysis.

15. The method of claim 14 , comprising applying, during said processing of said intermediate signal, signal spectrum estimation and conversion to frequency domain.

16. The method of claim 13 , comprising, during said analysis,
determining for each detected channel, an upper edge frequency and a lower edge frequency.

17. The method of claim 16 , wherein said one or more adjustments comprise at least one adjustment relating to optimizing capturing at least one of said one or more detected channels, for inclusion in said output signal.

18. The method of claim 16 , comprising determining, during said analysis, a center frequency for each detected channel, based on said upper edge frequency and said lower edge frequency.

19. The method of claim 18 , comprising determining, during said analysis, a frequency offset for each detected channel, based on said determined center frequency.

20. The method of claim 19 , comprising determining, during said analysis, an overall frequency offset for said input signal based on determined frequency offsets for all detected channels.

21. The method of claim 12 , comprising applying said DRO frequency drift detection and compensation continually, occasionally, and/or periodically.

22. The method of claim 12 , comprising synchronizing applying said one or more adjustments to one or more of said receiving of said input signal, said processing of said input signal, and said receiving of said output signal.

Assignees

• Maxlinear Inc

Inventors

• Ramesh Sridhar
• Anantharaman Subramanian
• Maller Harish

Classifications

• H03B5/1864

  the frequency-determining element being a dielectric resonator · CPC title

• H03L1/00 Primary

  Stabilisation of generator output against variations of physical values, e.g. power supply · CPC title

• H03L7/00 Primary

  Automatic control of frequency or phase; Synchronisation · CPC title