NO922267D0 - PROCEDURE AND CIRCUITS FOR BAANDPASS SIGNAL TREATMENT - Google Patents

PROCEDURE AND CIRCUITS FOR BAANDPASS SIGNAL TREATMENT

Info

Publication number
NO922267D0
NO922267D0 NO922267A NO922267A NO922267D0 NO 922267 D0 NO922267 D0 NO 922267D0 NO 922267 A NO922267 A NO 922267A NO 922267 A NO922267 A NO 922267A NO 922267 D0 NO922267 D0 NO 922267D0
Authority
NO
Norway
Prior art keywords
baandpass
circuits
procedure
signal treatment
interpolation
Prior art date
Application number
NO922267A
Other languages
Norwegian (no)
Other versions
NO922267L (en
NO304169B1 (en
Inventor
Hans-Joachim Dressler
Ingo Lipp
Original Assignee
Aeg Mobile Communication
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
Application filed by Aeg Mobile Communication filed Critical Aeg Mobile Communication
Publication of NO922267D0 publication Critical patent/NO922267D0/en
Publication of NO922267L publication Critical patent/NO922267L/en
Publication of NO304169B1 publication Critical patent/NO304169B1/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
    • H03M3/464—Details of the digital/analogue conversion in the feedback path
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/402—Arrangements specific to bandpass modulators
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/45—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedforward inputs, i.e. with forward paths from the modulator input to more than one filter stage
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/454—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Networks Using Active Elements (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Filters And Equalizers (AREA)

Abstract

The invention relates to a method and an arrangement for digital/analog conversion in the return branch of an analog/digital modulator loop of an interpolative bandpass A/D converter. The D/A conversion is effected by a biphase interpolation. As a result, delay times up to 1.5 times the loop clock period are tolerated. The overall signal/noise ratio is better than in the case of rectangular interpolation. <IMAGE>
NO922267A 1991-06-19 1992-06-10 Method and circuit for digital / analog conversion NO304169B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4120160A DE4120160A1 (en) 1991-06-19 1991-06-19 METHOD AND ARRANGEMENT FOR PROCESSING BAND PASS SIGNALS

Publications (3)

Publication Number Publication Date
NO922267D0 true NO922267D0 (en) 1992-06-10
NO922267L NO922267L (en) 1992-12-21
NO304169B1 NO304169B1 (en) 1998-11-02

Family

ID=6434249

Family Applications (1)

Application Number Title Priority Date Filing Date
NO922267A NO304169B1 (en) 1991-06-19 1992-06-10 Method and circuit for digital / analog conversion

Country Status (5)

Country Link
EP (1) EP0521315B1 (en)
AT (1) ATE152869T1 (en)
DE (2) DE4120160A1 (en)
FI (1) FI922857A (en)
NO (1) NO304169B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1184660A (en) * 1981-06-12 1985-03-26 Robert W. Harris Enhanced delta modulation encoder
DE3924505A1 (en) * 1989-07-25 1991-01-31 Ant Nachrichtentech High solution A=D converter with analog loop filter - has inner A=D converter operated with increased scanning frequency
DE3943072A1 (en) * 1989-12-27 1991-07-11 Licentia Gmbh AN INTERPOLATIVE A / D CONVERTER FOR BAND PASS SIGNALS

Also Published As

Publication number Publication date
FI922857A (en) 1992-12-20
NO922267L (en) 1992-12-21
FI922857A0 (en) 1992-06-18
EP0521315B1 (en) 1997-05-07
EP0521315A3 (en) 1994-03-23
ATE152869T1 (en) 1997-05-15
NO304169B1 (en) 1998-11-02
EP0521315A2 (en) 1993-01-07
DE4120160A1 (en) 1992-12-24
DE59208444D1 (en) 1997-06-12

Similar Documents

Publication Publication Date Title
DK0613256T3 (en) Analog-to-digital converter with modulated shake signal
DE69320853T2 (en) Circuit for analog / digital conversion
DE69021500D1 (en) Conditional motion-compensated interpolation of digital moving picture signals.
JPS5441061A (en) Analogue/digital converter
FI830182L (en) MED KOPPLINGSKONDENSATORARRANGEMANG FOERSEDD DELTA-SIGMA-MODULATOR
EP0601201A4 (en) Waveform a/d converter and d/a converter.
RU94006025A (en) MODULATED FOOTABLE PUSH-MUSIC SIGNAL
EP0361965A3 (en) Pulse width modulation type digital-to-analog converter
ATE103435T1 (en) DIGITAL CIRCUIT ARRANGEMENT FOR QUANTIZATION NOISE REDUCTION.
DE69124016D1 (en) Digital to analog converter
NO922267L (en) PROCEDURE AND CIRCUITS FOR BAANDPASS SIGNAL TREATMENT
DK0541878T3 (en) Delta-sigma analog / digital converter
DE69121828D1 (en) Digital to analog converter
DE69122175D1 (en) Digital to analog converter
DE69032260D1 (en) Device containing modular interpolation architecture
EP0602718A3 (en) Analog-to-digital converter for converting a multitude of analog input signals into digital output signals by means of one sigma-delta modulator.
JPS5337365A (en) Correcting method of d/a converting error for d/a converter
JPS54150013A (en) Digital signal transmission system
DE69333849D1 (en) Digital to analog converter circuit
DE68914627D1 (en) Subtractor amplifier circuit for cascade analog to digital converters.
FR2450533A1 (en) CIRCUIT FOR CONVERTING SIGNALS WITH PULSE MODULATED SIGNALS AND SIGNALS WITH AMPLITUDE PULSE MODULATION FOR DIGITAL TELEPHONE SWITCHING EQUIPMENT
GB9109103D0 (en) Digital to analogue &amp; analogue to digital converters for audio applications
JPS6437770A (en) Target-speed signal generating circuit
FR2704374B1 (en) Analog to digital converter.
KR910019103U (en) Field signal input circuit of analog / digital converter

Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN DECEMBER 2000