Signal receiver with multi-level sampling

Patent metadata

Field	Value
Publication number	US-9559835-B2
Application number	US-201414563476-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Jun 3, 2011
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A signal receiver may comprise circuitry for applying multi-level sampling to an input signal, using a plurality of sampling rates that comprises at least two different sampling rates, and circuitry for processing one or more outputs of the multi-level sampling. The processing may comprises sampling at a sampling rate that is different than each of the plurality of sampling rates used during the multi-level sampling and applying analog-to-digital conversion. At least one of the sampling rates used during the multi-level sampling and/or the sampling rate used during the processing may be set based on configuring of one or more clock signals used during the multi-level sampling and/or during the processing. At least one of the one or more clock signals may be configured based on reduction of frequency of a corresponding base clock signal.

First claim

What is claimed:

1. A method, comprising:
in an electronic device:
applying multi-level sampling to an input signal, using a plurality of sampling rates that comprises at least two different sampling rates; and
processing a plurality of outputs of said multi-level sampling, wherein the processing comprises:
sampling at a sampling rate that is different than each of the plurality of sampling rates used during said multi-level sampling; and
applying analog-to-digital conversion to each one of the plurality of outputs.

2. The method according to claim 1 , comprising applying low-noise amplification to said input signal.

3. The method according to claim 1 , comprising setting at least one of the plurality of sampling rates, used during said multi-level sampling, and/or said sampling rate used during said processing based on configuring of one or more clock signals used during said multi-level sampling and/or during said processing.

4. The method according to claim 3 , comprising configuring at least one of the one or more clock signals based on reduction of frequency of a corresponding base clock signal.

5. The method according to claim 3 , comprising configuring said one or more clock signals based on a base clock signal that is applied during one level of said multi-level sampling.

6. The method according to claim 1 , comprising holding output signals corresponding to each level of said multi-level sampling and to said processing during non-read periods as determined based on an applicable sampling rate.

7. The method according to claim 6 , comprising holding said output signals using grounding logic.

8. A system, comprising:
one or more circuits for use in an electronic device, the one or more circuits being operable to:
apply multi-level sampling to an input signal, using a plurality of sampling rates that comprises at least two different sampling rates; and
process a plurality of outputs of said multi-level sampling, wherein said processing comprises:
sampling at a sampling rate that is different than each of the plurality of sampling rates used during said multi-level sampling; and
applying analog-to-digital conversion to each one of the plurality of outputs.

9. The system according to claim 8 , wherein said one or more circuits are operable to apply low-noise amplification to said input signal.

10. The system according to claim 8 , wherein said one or more circuits are operable to set at least one of the plurality of sampling rates, used during said multi-level sampling, and/or said sampling rate used during said processing based on configuring of one or more clock signals used during said multi-level sampling and/or during said processing.

11. The system according to claim 10 , wherein said one or more circuits are operable to configure at least one of the one or more clock signals based on reduction of frequency of a corresponding base clock signal.

12. The system according to claim 10 , wherein said one or more circuits are operable to configure said one or more clock signals based on a base clock signal that is applied during one level of said multi-level sampling.

13. The system according to claim 8 , wherein said one or more circuits are operable to hold output signals corresponding to each level of said multi-level sampling and to said processing during non-read periods as determined based on an applicable sampling rate.

14. The system according to claim 13 , wherein said one or more circuits are operable to hold said output signals using grounding logic.

15. A system, comprising:
a signal receiver implemented on a single chip, the signal receiver comprising:
sampling circuitry that is operable to apply sampling to an input signal through a plurality of sampling levels, using a plurality of sampling rates that comprises at least three different sampling rates; and
an analog-to-digital conversion circuitry that is operable to apply analog-to-digital conversion to each one of a plurality of outputs of a last level of said plurality of sampling levels.

16. The system according to claim 15 , wherein said signal receiver comprises a low-noise amplifier for amplifying said input signal.

17. The system according to claim 15 , wherein said signal receiver comprises one or more buffering circuits for buffering intermediate outputs between consecutive levels of said plurality of sampling levels.

18. The system according to claim 15 , wherein said signal receiver comprises one or more circuits that are operable to set at least one of the plurality of sampling rates based on configuring of one or more clock signals used in said plurality of sampling levels.

19. The system according to claim 18 , wherein said signal receiver comprises one or more circuits that are operable to configure at least one of the one or more clock signals based on reduction of frequency of a corresponding base clock signal.

20. The system according to claim 15 , wherein said signal receiver comprises one or more circuits that are operable to perform at least some of digital processing of one or more outputs of said analog-to-digital conversion circuitry, said digital processing comprising filtering and decoding to extract desired signals or data.

Assignees

• Maxlinear Inc

Inventors

• Zhu Jianyu
• Peng Sheng-Yu
• Chandler Rodney
• Tiwari Pawan
• Bhatia Rahul
• Fogleman Eric

Classifications

• H03M1/1215 Primary

  using time-division multiplexing · CPC title

• H03M1/1245

  Details of sampling arrangements or methods · CPC title

• H04L7/0334 Primary

  Processing of samples having at least three levels, e.g. soft decisions · CPC title