Method and apparatus for broadband data conversion

Patent metadata

Field	Value
Publication number	US-10256773-B2
Application number	US-201815964615-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	Dec 23, 2010
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

A receiver may receive a signal and process each of a plurality of sub-bands of the received signal via a respective one of a plurality of first-type receive chains. The receiver may utilize a signal output by a first one of the plurality of the first-type receive chains to remove undesired signals from a signal output by a second one of the plurality of the first-type receive chains. The undesired signals may comprise aliases and/or harmonics of one or more signals that fall within a sub-band of the first one of the plurality of the first-type receive chains. The receiver may downconvert, filter, and digitize each of the plurality of sub-bands via a corresponding one of the plurality of the first type receive chains. The received signal may encompass the cable television band, and each of the plurality of sub-bands may comprise a plurality of cable television channels.

First claim

What is claimed is:

1. A system comprising:
one or more circuits of a receiver comprising a plurality of receive chains, wherein each receive chain of the plurality of receive chains is operable to process a respective one of a plurality of sub-bands of a received signal; and
a digital signal processor operable to utilize a signal output by a first receive chain of the plurality of receive chains to remove an undesired component from a signal output by a second receive chain of the plurality of receive chains.

2. The system of claim 1 , wherein the undesired component comprises an alias of one or more signals within a sub-band of the plurality of sub-bands processed by the first receive chain of the plurality of receive chains.

3. The system of claim 1 , wherein the undesired component comprises a harmonic of one or more signals within a sub-band of the plurality of sub-bands processed by the first receive chain of the plurality of receive chains.

4. The system of claim 1 , wherein each of the plurality of receive chains is operable to downconvert, filter, and digitize the respective one of the plurality of sub-bands of the received signal.

5. The system of claim 1 , wherein each of the plurality of receive chains is operable to downconvert the respective one of the plurality of sub-bands of the received signal utilizing a respective one of a plurality of fixed-frequency local oscillator signals.

6. The system of claim 5 , wherein a frequency of each one of the plurality of fixed-frequency local oscillator signals is different than a frequency of each other one of the plurality of fixed-frequency local oscillator signals.

7. The system of claim 1 , wherein the one or more circuits are operable to enable and disable one or more of the plurality of receive chains based on whether a channel to be output by the receiver is located in one of the plurality of sub-bands of the received signal that is processed by the one or more of the plurality of receive chains.

8. The system of claim 1 , wherein:
the received signal encompasses a cable television band; and
each of the plurality of sub-bands of the received signal comprises a plurality of cable television channels.

9. The system of claim 1 , wherein the one or more circuits is operable to concurrently process all of the plurality of sub-bands of the received signal.

10. The system of claim 1 , wherein each one of the plurality of sub-bands of the received signal is substantially non-overlapping with each other one of the plurality of sub-bands of the received signal.

11. A method comprising:
receiving a first signal;
processing each of a plurality of sub-bands of the received first signal via a respective one of a plurality of receive chains of a receiver;
utilizing a signal output by a first receive chain of the plurality of receive chains to remove an undesired component from a signal output by a second receive chain of the plurality of receive chains.

12. The method of claim 11 , wherein the undesired component comprises an alias of one or more signals within one of the plurality of sub-bands processed by the first receive chain of the plurality of receive chains.

13. The method of claim 11 , wherein the undesired component comprises a harmonic of one or more signals within one of the plurality of sub-bands processed by the first receive chain of the plurality of receive chains.

14. The method of claim 11 , comprising downconverting, filtering, and digitizing each of the plurality of sub-bands of the received first signal via a corresponding one of the plurality of the first type receive chains.

15. The method of claim 11 , wherein each of the plurality of receive chains downconverts a respective one of the plurality of sub-bands of the received first signal utilizing a respective one of a plurality of fixed-frequency local oscillator signals.

16. The method of claim 15 , wherein a frequency of each one of the plurality of fixed-frequency local oscillator signals is different than a frequency of each other one of the plurality of fixed-frequency local oscillator signals.

17. The method of claim 11 , comprising controlling whether one or more of the plurality of receive chains is enabled or disabled based on whether a channel to be output by the receiver is located in a sub-band of the received first signal that is processed by the one or more of the plurality of receive chains.

18. The method of claim 11 , wherein:
the received first signal encompasses a cable television band; and
each of the plurality of sub-bands of the received signal comprises a plurality of cable television channels.

19. The method of claim 11 , comprising concurrently processing all of the plurality of sub-bands of the received first signal.

20. The method of claim 11 , wherein each one of the plurality of sub-bands of the received first signal is substantially non-overlapping with each other one of the plurality of sub-bands of the received first signal.

Assignees

• Maxliner Inc
• Maxlinear Inc

Inventors

• Reddy Madhukar
• Fogleman Eric
• Ling Curtis

Classifications

• H03D2200/005

  Analog to digital conversion · CPC title

• H04B2215/068

  by avoiding a reception frequency range · CPC title

• H04B1/1027

  assessing signal quality or detecting noise/interference for the received signal · CPC title

• H04B15/04

  the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder · CPC title

• H04B2215/065

  by changing the frequency of clock or reference frequency · CPC title