DK200886A - Fm-radiomodtager - Google Patents

Fm-radiomodtager Download PDF

Info

Publication number
DK200886A
DK200886A DK200886A DK200886A DK200886A DK 200886 A DK200886 A DK 200886A DK 200886 A DK200886 A DK 200886A DK 200886 A DK200886 A DK 200886A DK 200886 A DK200886 A DK 200886A
Authority
DK
Denmark
Prior art keywords
intermediate frequency
phase
locked loop
band
pass filter
Prior art date
Application number
DK200886A
Other languages
English (en)
Other versions
DK162000C (da
DK200886D0 (da
DK162000B (da
Inventor
Bernhard-Michael Katzy
Original Assignee
Bosch Gmbh Robert
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6269616&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK200886(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of DK200886D0 publication Critical patent/DK200886D0/da
Publication of DK200886A publication Critical patent/DK200886A/da
Publication of DK162000B publication Critical patent/DK162000B/da
Application granted granted Critical
Publication of DK162000C publication Critical patent/DK162000C/da

Links

Classifications

    • 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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/004—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling an oscillator, e.g. the local oscillator
    • 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
    • H03J7/065—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 the counter or frequency divider being used in a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)

Description

oscillator (22) afgivne oscillatorfrekvens moduleres med lavfrekvenssignalet. Den anden PLL-sløjfe trækker det det smalbåndede båndfilter (26) tilførte signal til dette filters båndmidte.
Figure DK200886AD00021
DK200886A 1985-05-02 1986-05-01 Stoejreduktionssystem, til fm-radiomodtager, ved lave signalniveauer. DK162000C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3515746 1985-05-02
DE19853515746 DE3515746A1 (de) 1985-05-02 1985-05-02 Fm-funkempfaenger

Publications (4)

Publication Number Publication Date
DK200886D0 DK200886D0 (da) 1986-05-01
DK200886A true DK200886A (da) 1986-11-03
DK162000B DK162000B (da) 1991-09-02
DK162000C DK162000C (da) 1992-02-10

Family

ID=6269616

Family Applications (1)

Application Number Title Priority Date Filing Date
DK200886A DK162000C (da) 1985-05-02 1986-05-01 Stoejreduktionssystem, til fm-radiomodtager, ved lave signalniveauer.

Country Status (4)

Country Link
EP (1) EP0199887B1 (da)
AT (1) ATE45450T1 (da)
DE (2) DE3515746A1 (da)
DK (1) DK162000C (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596220A1 (fr) * 1986-03-21 1987-09-25 Portenseigne Demodulateur de frequence
US4939789A (en) * 1987-01-20 1990-07-03 Matsushita Electric Industrial Co., Ltd. Signal receiver for terrestrial and satellite broadcastings
CA2071421C (en) * 1991-06-19 2000-08-08 Yoshiaki Kumagai Automatic frequency control circuit
CH702685B1 (fr) * 1999-10-06 2011-08-31 Richemont Int Sa Récepteur à modulation de fréquence, notamment pour une application RDS.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530383A (en) * 1966-11-18 1970-09-22 Itt Ultra-sensitive receiver
JPS5643809A (en) * 1979-09-19 1981-04-22 Hitachi Ltd Automatic gain controller
GB2079552B (en) * 1980-07-02 1984-02-01 Philips Electronic Associated Double phase lock loop
DE3231708A1 (de) * 1982-08-26 1984-03-01 Robert Bosch Gmbh, 7000 Stuttgart Filter- und demodulationsschaltung

Also Published As

Publication number Publication date
ATE45450T1 (de) 1989-08-15
DE3515746A1 (de) 1986-11-06
EP0199887A2 (de) 1986-11-05
DK162000C (da) 1992-02-10
DK200886D0 (da) 1986-05-01
DE3664990D1 (en) 1989-09-14
EP0199887A3 (en) 1987-12-23
EP0199887B1 (de) 1989-08-09
DK162000B (da) 1991-09-02

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PBP Patent lapsed