KR920019107A - 시그마-델타 변조기 - Google Patents

시그마-델타 변조기 Download PDF

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Publication number
KR920019107A
KR920019107A KR1019920003050A KR920003050A KR920019107A KR 920019107 A KR920019107 A KR 920019107A KR 1019920003050 A KR1019920003050 A KR 1019920003050A KR 920003050 A KR920003050 A KR 920003050A KR 920019107 A KR920019107 A KR 920019107A
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section
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signal
input
gain
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KR1019920003050A
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요한네스 안나 나우스 페터
카렐 디예크만스 에이제
안토니우스 코르넬리우스 마리아 누이예텐 페트루스
Original Assignee
프레데릭 얀 스미트
엔. 브이. 필립스 글로아이람펜파브리켄
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Publication of KR920019107A publication Critical patent/KR920019107A/ko

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/3035—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with provisions for rendering the modulator inherently stable, e.g. by restricting the swing within the loop, by removing part of the zeroes using local feedback loops, by positioning zeroes outside the unit circle causing the modulator to operate in a chaotic regime
    • 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
    • H03M3/44—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 provisions for rendering the modulator inherently stable
    • H03M3/442—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 provisions for rendering the modulator inherently stable by restricting the swing within the loop, e.g. gain scaling
    • H03M3/444—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 provisions for rendering the modulator inherently stable by restricting the swing within the loop, e.g. gain scaling using non-linear elements, e.g. limiters
    • 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
    • H03M3/452—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 weighted feedforward summation, i.e. with feedforward paths from more than one filter stage to the quantiser input
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3028—Structural details of digital 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
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/3037—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with weighted feedforward summation, i.e. with feedforward paths from more than one filter stage to the quantiser input

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

내용 없음

Description

시그마-델타 변조기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 아날로그 입력 신호에 대한 시그마-델타 변조기의 회로선도,
제2도는 본 발명에 따른 디지탈 입력 신호에 대한 시그마-델타 변조기의 회로선도.

Claims (2)

  1. 입력신호를 디지탈 출력 신호로 변환하며, (a)입력 신호와 피드백 신호의 차에 응답하여 차신호를 발생시키는 차 스테이지와, (b)범위가 1 내지 N에 이르는 랭크 K의 다수 N의 제1서열적분섹션-이들 섹션은 랭크의 상승 순으로 순차적으로 연결되고 K 및 N은 1보다 크거나 같은 정수이며, 각각의 개별 섹션은 섹션신호를 생성시키는 입출력 및 랭크 K의 섹션이득 GK를 갖는 입력에서 출력으로의 제1서열 전달 함수를 갖고, 랭크 1섹션의 입력은 차 신호 수단을 위해 연결되고, 나머지 섹션으로부터, 랭크 K섹션의 입력은 랭크 K-1의 선행섹션의 출력에 연결된다을 포함하는 필터 수단과, (c)범위가 1 내지 N에 이르는 랭크 K의 동등하게 많은 다수의 N의 가중 증폭기-이 증폭기 각각은 입력이 상기 랭크 섹션의 출력에 결합되고 N의 가중 신호를 발생시키는 랭크 K의 가중인자 WK를 갖는다와, (d)N의 가중 신호의 합에 응답하여 필터 신호를 발생시키는 가산기 스테이지와, (e)필터 신호를 디지탈 출력 신호로 변환하는 양자화기와, 그리고 (f)디지탈 출력신호에 응답하여 피드백 신호를 발생시키는 피드백 수단을 구비하는 시그마-델타 변조기에 있어서, 상기 섹션 각각이 관련 섹션 신호의 진폭을 랭크 K의 섹션 제한 값 LK로 제한시키는 제한기를 구비하고 2를 초과하는 랭크 K의 각 값에 있어서, 랭크 K의 섹션 제한값 LK의 몫을 나타내는 QK와 그리고 랭크 K의 섹션 이득 GK와 K보다 1작은 랭크 섹션 이득 GK-1등의 곱으로부터 산출되며 랭크 1의 섹션 이득 G1을 포함하는 값이 랭크 K-1의 섹션 제한값 LK-1의 몫을 나타내는 몫값 QK-1와 그리고 랭크 K-1의 섹션 이득 GK-1와 K-1보다 1작은 랭크의 섹션 이득 GK-2등의 곱으로 부터 산출되며 랭크 1의 섹션 이득 G1을 포함하는 값보다 작은 것을 특징으로 하는 시그마 델타 변조기.
  2. 제1항에 있어서, 관련 섹션 제한값 처럼 거의 동등하게 큰 관련 섹션신호의 신호 이동 범위를 결정하는 공급 전압을 섹션에 공급하는 전압 공급 수단을 구비하는 것을 특징으로 하는 시그마 델타 변조기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920003050A 1991-03-01 1992-02-27 시그마-델타 변조기 KR920019107A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9100379 1991-03-01
NL9100379A NL9100379A (nl) 1991-03-01 1991-03-01 Sigma-deltamodulator.

Publications (1)

Publication Number Publication Date
KR920019107A true KR920019107A (ko) 1992-10-22

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US (1) US5243345A (ko)
EP (1) EP0501580A1 (ko)
JP (1) JPH04320111A (ko)
KR (1) KR920019107A (ko)
NL (1) NL9100379A (ko)

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US5055846A (en) * 1988-10-13 1991-10-08 Crystal Semiconductor Corporation Method for tone avoidance in delta-sigma converters
US5012244A (en) * 1989-10-27 1991-04-30 Crystal Semiconductor Corporation Delta-sigma modulator with oscillation detect and reset circuit

Also Published As

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US5243345A (en) 1993-09-07
JPH04320111A (ja) 1992-11-10
NL9100379A (nl) 1992-10-01
EP0501580A1 (en) 1992-09-02

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