FI922857A0 - FOER FARER OCH ANORDNING FOER BEHANDLING AV BANDPASSIGNALER. - Google Patents

FOER FARER OCH ANORDNING FOER BEHANDLING AV BANDPASSIGNALER.

Info

Publication number
FI922857A0
FI922857A0 FI922857A FI922857A FI922857A0 FI 922857 A0 FI922857 A0 FI 922857A0 FI 922857 A FI922857 A FI 922857A FI 922857 A FI922857 A FI 922857A FI 922857 A0 FI922857 A0 FI 922857A0
Authority
FI
Finland
Prior art keywords
foer
bandpassignaler
farer
behandling
och anordning
Prior art date
Application number
FI922857A
Other languages
Finnish (fi)
Other versions
FI922857A (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 FI922857A0 publication Critical patent/FI922857A0/en
Publication of FI922857A publication Critical patent/FI922857A/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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Filters And Equalizers (AREA)
  • Stereo-Broadcasting Methods (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>
FI922857A 1991-06-19 1992-06-18 FOER FARER OCH ANORDNING FOER BEHANDLING AV BANDPASSIGNALER FI922857A (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 (2)

Publication Number Publication Date
FI922857A0 true FI922857A0 (en) 1992-06-18
FI922857A FI922857A (en) 1992-12-20

Family

ID=6434249

Family Applications (1)

Application Number Title Priority Date Filing Date
FI922857A FI922857A (en) 1991-06-19 1992-06-18 FOER FARER OCH ANORDNING FOER BEHANDLING AV BANDPASSIGNALER

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
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal 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
EP0521315B1 (en) 1997-05-07
EP0521315A3 (en) 1994-03-23
DE59208444D1 (en) 1997-06-12
NO922267L (en) 1992-12-21
ATE152869T1 (en) 1997-05-15
NO922267D0 (en) 1992-06-10
NO304169B1 (en) 1998-11-02
DE4120160A1 (en) 1992-12-24
FI922857A (en) 1992-12-20
EP0521315A2 (en) 1993-01-07

Similar Documents

Publication Publication Date Title
DE69021500D1 (en) Conditional motion-compensated interpolation of digital moving picture signals.
DE69322762D1 (en) AD converter with modulated dither signal
DE69320853D1 (en) Circuit for analog / digital conversion
EP0601201A4 (en) Waveform a/d converter and d/a converter.
RU94006025A (en) MODULATED FOOTABLE PUSH-MUSIC SIGNAL
EP0264727A3 (en) Intra-field recursive interpolator
DE69326208D1 (en) Solid state imaging device with data rate conversion of the digital output signal
HK1013374A1 (en) Analog-to-digital converter for converting a multitude of analog input signals into digital output signals by means of one sigma-delta modulator
EP0361965A3 (en) Pulse width modulation type digital-to-analog converter
EP0525969A3 (en) A frequency translating coherent analog to digital conversion system for modulated signals
DE69015946D1 (en) Analog to digital converter with high conversion frequency.
DE69125674D1 (en) Automatic analog to digital conversion with selectable format results
DE69124016D1 (en) Digital to analog converter
FI922857A0 (en) FOER FARER OCH ANORDNING FOER BEHANDLING AV BANDPASSIGNALER.
DE69218742D1 (en) Switching a digital video signal with conversion of the data rate
DK0541878T3 (en) Delta-sigma analog / digital converter
DE69122175D1 (en) Digital to analog converter
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.
DE69032260D1 (en) Device containing modular interpolation architecture
DE69216818D1 (en) Analog to digital converter
GB2249909B (en) Format conversion of digital video signals
GB9226608D0 (en) Analogue to digital converters
DE69021567D1 (en) Interpolation calculator to increase the output word rate of a digital signal.
JPS6437181A (en) Digital video camera
GB2249904B (en) Format conversion of digital video signals