KR880009474A - 자동 튜닝 위상 동기 루우프 fm검파 시스템 - Google Patents

자동 튜닝 위상 동기 루우프 fm검파 시스템 Download PDF

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Publication number
KR880009474A
KR880009474A KR870000822A KR870000822A KR880009474A KR 880009474 A KR880009474 A KR 880009474A KR 870000822 A KR870000822 A KR 870000822A KR 870000822 A KR870000822 A KR 870000822A KR 880009474 A KR880009474 A KR 880009474A
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KR
South Korea
Prior art keywords
output
inputting
signal
comparator
current
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Application number
KR870000822A
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English (en)
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KR890004160B1 (ko
Inventor
민성기
명찬규
신기호
Original Assignee
강진구
삼성반도체통신 주식회사
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Application filed by 강진구, 삼성반도체통신 주식회사 filed Critical 강진구
Priority to KR1019870000822A priority Critical patent/KR890004160B1/ko
Priority to US07/147,433 priority patent/US4881042A/en
Priority to DE3802524A priority patent/DE3802524A1/de
Priority to GB8802172A priority patent/GB2202700B/en
Priority to JP63019713A priority patent/JPH01132206A/ja
Publication of KR880009474A publication Critical patent/KR880009474A/ko
Application granted granted Critical
Publication of KR890004160B1 publication Critical patent/KR890004160B1/ko

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • H03D3/245—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop using at least twophase detectors in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
    • H03B5/1215—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair the current source or degeneration circuit being in common to both transistors of the pair, e.g. a cross-coupled long-tailed pair
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1221—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising multiple amplification stages connected in cascade
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

내용 없음.

Description

자동 튜닝 위상 동기 루우프 FM검파 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 FM 검파 시스템,
제2도는 제1도의 전압제어 발전기의 회로도.
제4도는 본 발명에 따른 리플카운터의 입력단에 적용되는 일실시예의 회로도.

Claims (3)

  1. 위상 비교기(1)와 저역필터(2)와 증폭기(3) 및 전압제어 발전기(4)를 구비하는 위상 동기루우프(20) 음성증폭기(5) 및 디엠파시스회로(6)를 사용한 FM검파 시스템에 있어서, 상기 전압제어 발진기(4)에서 출력하여 상기 위상비교기(1)로 입력하는 제어신호(VOC1)와 90°의 위상차를 갖는 신호(VOC2)를 입력하여 구형파의 파형을 형성하는 파형 성형 비교기(7)와, 상기 성형된 구형파와 FM입력신호(VFM)를 입력하여 합차주파수를 발생하는 인록크 디텍터(8)와, 상기 합주파수에 대응하는 고주파 신호를 여과하며 상기 위상동기로우프(20)가 록크 되었을시 상기 인록크 디텍터(8)에서 출력하는 비트 신호를 여과하는 저역필터(9)와, 상기 저역필터(9)의 출력과 기준전압(VREF1)과의 비교에 의해 록크시에는 일정의 논리 레벨을 출력하여 록크가 되지 않았을 시에는 상기 차주파수에 대응하는 클럭펄스를 발생하여 출력하는 비교기(10)와, 상화 클럭펄스를 입력하여 카운팅을 하여 소정 비트의 2진 출력을 출력하는 리플카운터(11)와, 상기 2진 출력을 입력하여 아나로그 전류를 단계적으로 출력하는 디지털 아나로그 변환기(12)와, 상기 디지털 아나로그 변환기(12)의 출력 전류값과 상기 증폭기(3)의 출력전압에 따라 발진 주파수가 제어되는 전압 제어발진기(4)를 구비함을 특징으로 하는 FM검파 시스템.
  2. 제1항에 있어서 전압제어발전기(4)가 트랜지스터(Q6) 과 (Q7)로 구성된 에미터 플러워의 버퍼판과 상기 버퍼판에 크로스로 접속된 트랜지스터(Q8) 과 (Q9)로 구성된 이득단과 상기 트랜지스터(Q9) 과 (Q9)의 에미터에 접속된 캐패시터(C1)와, 상기 디지털 아나로그 변환기(12)의 출력 전류에 따라 상기 트랜지스터 (Q8) 또는 (Q9)의 에미터 전류를 변환시켜 발진 주파수를 변경시키는 제1전류원 수단(Q4, Q5)과, 상기 증폭기(3)의 에러 신호(AEV)를 입력하여 상기 트랜지스터 (Q8) 또는 (Q9)의 에미터 전류를 변화시켜 발진 주파수를 제어하는 제2전류원 수단(Q1-Q3, R1, I1, I2)으로 구성됨을 특징으로하는 회로.
  3. 제1항에 있어서 상기 비교기(10)와 리플카운터(11)의 사이에 FM검파 제어논리 신호와 상기 비교기의 출력을 입력하는 앤드 게이트가 접속됨을 특징으로 하는 회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870000822A 1987-01-31 1987-01-31 자동 튜닝 위상동기루우프 fm검파 시스템 KR890004160B1 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019870000822A KR890004160B1 (ko) 1987-01-31 1987-01-31 자동 튜닝 위상동기루우프 fm검파 시스템
US07/147,433 US4881042A (en) 1987-01-31 1988-01-25 Automatically tunable phase locked loop FM detection system
DE3802524A DE3802524A1 (de) 1987-01-31 1988-01-28 Automatisch abstimmbarer detektor fuer frequenzmodulierte signale
GB8802172A GB2202700B (en) 1987-01-31 1988-02-01 An automatic tunable phase locked loop fm detection system
JP63019713A JPH01132206A (ja) 1987-01-31 1988-02-01 自動チューニング位相同期ループｆｍ検波システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870000822A KR890004160B1 (ko) 1987-01-31 1987-01-31 자동 튜닝 위상동기루우프 fm검파 시스템

Publications (2)

Publication Number Publication Date
KR880009474A true KR880009474A (ko) 1988-09-15
KR890004160B1 KR890004160B1 (ko) 1989-10-21

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ID=19259240

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Application Number Title Priority Date Filing Date
KR1019870000822A KR890004160B1 (ko) 1987-01-31 1987-01-31 자동 튜닝 위상동기루우프 fm검파 시스템

Country Status (5)

Country Link
US (1) US4881042A (ko)
JP (1) JPH01132206A (ko)
KR (1) KR890004160B1 (ko)
DE (1) DE3802524A1 (ko)
GB (1) GB2202700B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990025540A (ko) * 1997-09-12 1999-04-06 윤종용 레벨 조정 기능을 갖는 주파수 변조 검파장치 및그의 레벨조정방법

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06112817A (ja) * 1992-09-25 1994-04-22 Fujitsu Ltd Ｐｌｌ 周波数シンセサイザ回路
JP2820069B2 (ja) * 1995-05-31 1998-11-05 日本電気株式会社 Ｆｍ復調器
JP2000315948A (ja) 1999-04-28 2000-11-14 Nec Corp Ｐｌｌ周波数シンセサイザ
TW498998U (en) * 2000-05-17 2002-08-11 Asustek Comp Inc Switching circuit for supplying operation point of central processor
US6734724B1 (en) * 2000-10-06 2004-05-11 Tropian, Inc. Power control and modulation of switched-mode power amplifiers with one or more stages
US7436253B2 (en) * 2006-12-06 2008-10-14 Broadcom Corporation Method and system for fast calibration to cancel phase feedthrough
FR2962612B1 (fr) * 2010-07-06 2013-03-29 St Microelectronics Sa Oscillateur commande en tension multi-bande sans capacite commutee.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111356A (ja) * 1974-07-18 1976-01-29 Victor Company Of Japan Hikakudohenchohashingofukuchokairo
JPS5930337B2 (ja) * 1976-09-11 1984-07-26 ソニー株式会社 発振回路
US4580101A (en) * 1983-04-06 1986-04-01 Multitone Electronics Plc FM demodulators with local oscillator frequency control circuits
JPH0744386B2 (ja) * 1984-09-07 1995-05-15 株式会社日立製作所 復調回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990025540A (ko) * 1997-09-12 1999-04-06 윤종용 레벨 조정 기능을 갖는 주파수 변조 검파장치 및그의 레벨조정방법

Also Published As

Publication number Publication date
GB2202700A (en) 1988-09-28
KR890004160B1 (ko) 1989-10-21
DE3802524A1 (de) 1988-08-11
GB2202700B (en) 1991-03-27
GB8802172D0 (en) 1988-03-02
DE3802524C2 (ko) 1990-04-05
US4881042A (en) 1989-11-14
JPH01132206A (ja) 1989-05-24

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