DK157517C - Apparat til eftersoegning af modtagefrekvensen for en frekvensmoduleret radiomodtagerr - Google Patents

Apparat til eftersoegning af modtagefrekvensen for en frekvensmoduleret radiomodtagerr

Info

Publication number
DK157517C
DK157517C DK409881A DK409881A DK157517C DK 157517 C DK157517 C DK 157517C DK 409881 A DK409881 A DK 409881A DK 409881 A DK409881 A DK 409881A DK 157517 C DK157517 C DK 157517C
Authority
DK
Denmark
Prior art keywords
frequency
searching
radio receiver
modulated radio
receiving
Prior art date
Application number
DK409881A
Other languages
English (en)
Other versions
DK157517B (da
DK409881A (da
Inventor
Roger Granek
Jean Hybre
Michel Drobecq
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of DK409881A publication Critical patent/DK409881A/da
Publication of DK157517B publication Critical patent/DK157517B/da
Application granted granted Critical
Publication of DK157517C publication Critical patent/DK157517C/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Noise Elimination (AREA)
DK409881A 1980-09-16 1981-09-15 Apparat til eftersoegning af modtagefrekvensen for en frekvensmoduleret radiomodtagerr DK157517C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8019918 1980-09-16
FR8019918A FR2490428B1 (fr) 1980-09-16 1980-09-16 Dispositif de recherche de la frequence d'accord d'un recepteur radioelectrique a modulation de frequence

Publications (3)

Publication Number Publication Date
DK409881A DK409881A (da) 1982-03-17
DK157517B DK157517B (da) 1990-01-15
DK157517C true DK157517C (da) 1990-06-05

Family

ID=9245971

Family Applications (1)

Application Number Title Priority Date Filing Date
DK409881A DK157517C (da) 1980-09-16 1981-09-15 Apparat til eftersoegning af modtagefrekvensen for en frekvensmoduleret radiomodtagerr

Country Status (5)

Country Link
US (1) US4403345A (da)
EP (1) EP0048200B1 (da)
DE (1) DE3170291D1 (da)
DK (1) DK157517C (da)
FR (1) FR2490428B1 (da)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6119261A (ja) * 1984-07-05 1986-01-28 Toshiba Corp 周波数変換回路
US4816769A (en) * 1985-06-21 1989-03-28 Ma John Y BPSK demodulator and FM receiver for digital data pagers
US4727591A (en) * 1986-09-04 1988-02-23 Arvin Industries, Inc. Microprocessor controlled tuning system
US5014350A (en) * 1988-04-28 1991-05-07 Sanyo Electric Co., Ltd. Apparatus for and method of improving the AFC of a television broadcast satellite receiver
GB9006919D0 (en) * 1990-03-28 1990-05-23 Panther Giles Paging receiver
JP2605606B2 (ja) * 1993-12-06 1997-04-30 日本電気株式会社 列車無線通信システム
US5678223A (en) * 1995-03-07 1997-10-14 Motorola, Inc. Method and apparatus for an automatic frequency control receiver
FR2755516B1 (fr) 1996-11-05 1999-01-22 Thomson Csf Dispositif compact d'illumination
FR2819061B1 (fr) * 2000-12-28 2003-04-11 Thomson Csf Dispositif de controle de polarisation dans une liaison optique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486118A (en) * 1966-12-28 1969-12-23 Aerojet General Co Fm sweep signal detection and signal quality evaluation circuit
DE2424613C3 (de) * 1974-05-21 1979-07-05 Texas Instruments Deutschland Gmbh, 8050 Freising Schaltungsanordnung zur automatischen Feinabstimmung eines Überlagerungsempfängers
SE7512401L (sv) * 1974-11-07 1976-05-10 Decca Ltd Dempsats for antenner
US4197500A (en) * 1976-11-01 1980-04-08 The United States Of America As Represented By The Secretary Of The Army Automatic channel selection
FR2383560A1 (fr) * 1977-03-09 1978-10-06 Trt Telecom Radio Electr Dispositif de commande de recherche de frequence dans un recepteur radioelectrique mobile par rapport a des stations emettrices
NL179435C (nl) * 1977-10-26 1986-09-01 Philips Nv Ontvanger met een frequentiesynthese-schakeling.
DE2840533A1 (de) * 1978-09-18 1980-03-27 Hans Ing Grad Wellhausen Rundfunk- oder fernsehempfaenger
US4348772A (en) * 1979-11-26 1982-09-07 Bell Telephone Laboratories, Incorporated Frequency stabilization circuit for a local oscillator

Also Published As

Publication number Publication date
DK157517B (da) 1990-01-15
US4403345A (en) 1983-09-06
DE3170291D1 (en) 1985-06-05
DK409881A (da) 1982-03-17
EP0048200A1 (fr) 1982-03-24
EP0048200B1 (fr) 1985-05-02
FR2490428A1 (fr) 1982-03-19
FR2490428B1 (fr) 1986-04-18

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Legal Events

Date Code Title Description
PBP Patent lapsed