Detection and compensation of dielectric resonator oscillator frequency drift

Patent metadata

Field	Value
Publication number	US-2018102777-A1
Application number	US-201715707788-A
Country	US
Kind code	A1
Filing date	Sep 18, 2017
Priority date	Jan 30, 2014
Publication date	Apr 12, 2018
Grant date	—

Abstract

Systems and methods are provided for detection and compensation of frequency drifts. Frequency related information may be determined for each of one or more channels in an input signal, and a frequency drift may be determined based on the determined frequency related information of the one or more channels. Frequency related adjustments may be determined based on the frequency drift, and the frequency related adjustments may be applied to different circuits used during one or more of: receiving of the input signal, processing of the input signal, processing of an intermediate signal generated based on the processing of the input signal, and generating of an output signal corresponding to the input signal. Applying the frequency related adjustments may be configured to meet one or more criteria.

First claim

1 - 20 . (canceled)

21 . A system comprising:
a processing circuit operable to:
determine frequency related information for each of one or more channels in an input signal;
determine a frequency drift based on said determined frequency related information of said one or more channels in said input signal;
determine based on said frequency drift, one or more frequency related adjustments; and
apply said one or more frequency related adjustments to different circuits used during one or more of:
receiving of said input signal,
processing of said input signal,
processing of an intermediate signal generated based on said processing of said input signal, and
generating of an output signal corresponding to said input signal,

wherein said applying of said one or more frequency related adjustments is configured to meet one or more criteria.

22 . The system of claim 21 , wherein said processing circuit is operable to determine said frequency drift based on analysis of an intermediate signal generated during processing of said input signal.

23 . The system of claim 22 , wherein said processing circuit is operable to process said intermediate signal to make it suitable for said analysis.

24 . The system of claim 23 , wherein said processing of said intermediate signal comprises applying signal spectrum estimation and conversion to frequency domain.

25 . The system of claim 21 , wherein said processing circuit is operable to determine for each of said one or more channels in said input signal at least one of an upper edge frequency, a lower edge frequency, and a center frequency.

26 . The system of claim 25 , wherein said processing circuit is operable to determine said frequency related information for each of each of said one or more channels in said input signal based on at least one of said center frequency, said upper edge frequency, and said lower edge frequency.

27 . The system of claim 21 , wherein said frequency related information comprise a frequency offset.

28 . The system of claim 27 , wherein said processing circuit is operable to determine said frequency offset for each of said one or more channels in said input signal.

29 . The system of claim 28 , wherein said processing circuit is operable to determine an overall frequency offset for said input signal based on determined frequency offsets for all of said one or more channels in said input signal.

30 . The system of claim 21 , wherein said one or more criteria comprise synchronizing applying said one or more frequency related adjustments to said different circuits.

31 . A method comprising:
determining frequency related information for each of one or more channels in an input signal; determining a frequency drift based on said determined frequency related information of said one or more channels in said input signal; determining, based on said frequency drift, one or more frequency related adjustments; and applying of said one or more frequency related adjustments to one or more of:
receiving of said input signal,
processing of said input signal,
processing of an intermediate signal generated based on said processing of said input signal, and
generating of an output signal corresponding to said input signal;
wherein said applying of said one or more frequency related adjustments is configured to meet one or more criteria.

32 . The method of claim 31 , comprising determining said frequency drift based on analysis of an intermediate signal generated during said processing of said input signal.

33 . The method of claim 32 , comprising processing said intermediate signal to make it suitable for said analysis.

34 . The method of claim 33 , comprising applying, during said processing of said intermediate signal, signal spectrum estimation and conversion to frequency domain.

35 . The method of claim 31 , comprising determining for each of said one or more channels in said input signal at least one of an upper edge frequency, a lower edge frequency, and a center frequency.

36 . The method of claim 35 , comprising determining said frequency related information for each of each of said one or more channels in said input signal based on at least one of said center frequency, said upper edge frequency, and said lower edge frequency.

37 . The method of claim 31 , wherein said frequency related information comprise a frequency offset.

38 . The method of claim 36 , comprising determining said frequency offset for each of said one or more channels in said input signal.

39 . The method of claim 37 , comprising determining an overall frequency offset for said input signal based on said determined frequency offsets for all of said one or more channels in said input signal.

40 . The method of claim 31 , wherein said one or more frequency related adjustments comprise at least one adjustment relating to optimizing capturing at least one of said one or more channels, for inclusion in said output signal.

41 . The method of claim 31 , wherein said one or more criteria comprise synchronizing applying said one or more frequency related adjustments.

Assignees

• Maxlinear Inc

Inventors

• Ramesh Sridhar
• Anantharaman Subramanian
• Maller Harish

Classifications

• H03L7/00 Primary

  Automatic control of frequency or phase; Synchronisation · CPC title

• 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