WO2002091581A3 - Method and apparatus for analog-to-digital conversion - Google Patents

Method and apparatus for analog-to-digital conversion Download PDF

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Publication number
WO2002091581A3
WO2002091581A3 PCT/US2002/010351 US0210351W WO02091581A3 WO 2002091581 A3 WO2002091581 A3 WO 2002091581A3 US 0210351 W US0210351 W US 0210351W WO 02091581 A3 WO02091581 A3 WO 02091581A3
Authority
WO
WIPO (PCT)
Prior art keywords
samplers
analog
noise
optoelectronic receiver
digital conversion
Prior art date
Application number
PCT/US2002/010351
Other languages
French (fr)
Other versions
WO2002091581A2 (en
Inventor
Daniel Yap
Robert H Walden
Original Assignee
Hrl Lab Llc
Daniel Yap
Robert H Walden
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/848,499 external-priority patent/US6525682B2/en
Priority claimed from US09/848,498 external-priority patent/US6628849B2/en
Application filed by Hrl Lab Llc, Daniel Yap, Robert H Walden filed Critical Hrl Lab Llc
Priority to EP02769254A priority Critical patent/EP1393448A2/en
Priority to AU2002307075A priority patent/AU2002307075A1/en
Priority to JP2002587928A priority patent/JP2004533161A/en
Publication of WO2002091581A2 publication Critical patent/WO2002091581A2/en
Publication of WO2002091581A3 publication Critical patent/WO2002091581A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/494—Sampling or signal conditioning arrangements specially adapted for delta-sigma type analogue/digital conversion systems
    • H03M3/496—Details of sampling arrangements or methods
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/466—Multiplexed conversion systems
    • H03M3/468—Interleaved, i.e. using multiple converters or converter parts for one channel, e.g. using Hadamard codes, pi-delta-sigma converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

A photonically sampled analog-to-digital converter using parallel channels of sampling and quantizing. The parallel combination achieves cancellation of the spurs that result from the nonlinear transfer function of the samplers. The samplers feed a dual-detector optoelectronic receiver that has differential inputs for suppression of laser intensity noise. The outputs of the multiple photonic samplers are averaged to reduce the effects of shot or thermal noise from the optoelectronic receiver of a sampler. The errors produced by the quantization process can be reduced by using a delta-sigma modulater-based analog-to-digital convertor as the quantizer which provides noise-spectrum shaping and filtering.
PCT/US2002/010351 2001-05-03 2002-04-02 Method and apparatus for analog-to-digital conversion WO2002091581A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02769254A EP1393448A2 (en) 2001-05-03 2002-04-02 Method and apparatus for analog-to-digital conversion
AU2002307075A AU2002307075A1 (en) 2001-05-03 2002-04-02 Method and apparatus for analog-to-digital conversion
JP2002587928A JP2004533161A (en) 2001-05-03 2002-04-02 Method and apparatus for analog-to-digital conversion

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/848,499 2001-05-03
US09/848,499 US6525682B2 (en) 2001-05-03 2001-05-03 Photonic parallel analog-to-digital converter
US09/848,498 2001-05-03
US09/848,498 US6628849B2 (en) 2001-05-03 2001-05-03 Photonic encoding sampler

Publications (2)

Publication Number Publication Date
WO2002091581A2 WO2002091581A2 (en) 2002-11-14
WO2002091581A3 true WO2002091581A3 (en) 2003-11-13

Family

ID=29407019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/010351 WO2002091581A2 (en) 2001-05-03 2002-04-02 Method and apparatus for analog-to-digital conversion

Country Status (4)

Country Link
EP (1) EP1393448A2 (en)
JP (1) JP2004533161A (en)
AU (1) AU2002307075A1 (en)
WO (1) WO2002091581A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6842129B1 (en) 2003-10-22 2005-01-11 Northrop Grumman Corporation Delta-sigma analog-to-digital converter
CN102365832B (en) * 2009-01-30 2016-01-20 英特赛尔美国有限公司 Mixed format medium transmission system and method
DE102013201253A1 (en) 2013-01-26 2014-07-31 Lenze Automation Gmbh Method and device for generating a digital signal
DE102018222415A1 (en) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Multichannel analog-digital converter device for an optoelectronic sensor, method for signal modulation in an optoelectronic sensor and laser-based distance and / or speed sensor
JP7003336B1 (en) * 2021-02-03 2022-02-10 三菱電機株式会社 Frequency separator, optical quantization circuit, optical AD conversion system, and optical signal processing system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5196852A (en) * 1992-02-21 1993-03-23 California Institute Of Technology Analog-to-digital converter using parallel ΔΣ modulators
US6028424A (en) * 1997-01-31 2000-02-22 Massachuetts Institute Of Technology Linearized optical sampler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5196852A (en) * 1992-02-21 1993-03-23 California Institute Of Technology Analog-to-digital converter using parallel ΔΣ modulators
US6028424A (en) * 1997-01-31 2000-02-22 Massachuetts Institute Of Technology Linearized optical sampler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MASON R ET AL: "High-speed electro-optic analogue to digital converters", PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS. (ISCS). CHICAGO, MAY 3 - 6, 1993, NEW YORK, IEEE, US, vol. 2, 3 May 1993 (1993-05-03), pages 1081 - 1084, XP010115299, ISBN: 0-7803-1281-3 *

Also Published As

Publication number Publication date
WO2002091581A2 (en) 2002-11-14
JP2004533161A (en) 2004-10-28
EP1393448A2 (en) 2004-03-03
AU2002307075A1 (en) 2002-11-18

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