DE3223904A1 - Filter- und demodulationsschaltung - Google Patents

Filter- und demodulationsschaltung

Info

Publication number
DE3223904A1
DE3223904A1 DE19823223904 DE3223904A DE3223904A1 DE 3223904 A1 DE3223904 A1 DE 3223904A1 DE 19823223904 DE19823223904 DE 19823223904 DE 3223904 A DE3223904 A DE 3223904A DE 3223904 A1 DE3223904 A1 DE 3223904A1
Authority
DE
Germany
Prior art keywords
filter
circuit
channel
frequency
voltage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE19823223904
Other languages
German (de)
English (en)
Other versions
DE3223904C2 (en:Method
Inventor
Jens Dipl.-Ing. 1000 Berlin Hansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19823223904 priority Critical patent/DE3223904A1/de
Publication of DE3223904A1 publication Critical patent/DE3223904A1/de
Application granted granted Critical
Publication of DE3223904C2 publication Critical patent/DE3223904C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
    • 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
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmitters (AREA)
DE19823223904 1982-06-26 1982-06-26 Filter- und demodulationsschaltung Granted DE3223904A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823223904 DE3223904A1 (de) 1982-06-26 1982-06-26 Filter- und demodulationsschaltung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823223904 DE3223904A1 (de) 1982-06-26 1982-06-26 Filter- und demodulationsschaltung

Publications (2)

Publication Number Publication Date
DE3223904A1 true DE3223904A1 (de) 1983-12-29
DE3223904C2 DE3223904C2 (en:Method) 1991-02-28

Family

ID=6166926

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823223904 Granted DE3223904A1 (de) 1982-06-26 1982-06-26 Filter- und demodulationsschaltung

Country Status (1)

Country Link
DE (1) DE3223904A1 (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005170A1 (en) * 1986-02-24 1987-08-27 H.U.C. Elektronik Hansen & Co. Method and device for converting the frequency of frequency modulated signals
EP1608061A1 (en) * 2004-06-14 2005-12-21 Broadcom Corporation Frequency converter using a tunable bandpass filter
US7603098B2 (en) 2004-03-31 2009-10-13 Broadcom Corporation Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873931A (en) * 1973-10-05 1975-03-25 Comstron Corp FM demodulator circuits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873931A (en) * 1973-10-05 1975-03-25 Comstron Corp FM demodulator circuits

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Abstracts The Journal of El. and Comm. Eng., Juni 1967, S. 23,24 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005170A1 (en) * 1986-02-24 1987-08-27 H.U.C. Elektronik Hansen & Co. Method and device for converting the frequency of frequency modulated signals
US7596195B2 (en) 2004-03-31 2009-09-29 Broadcom Corporation Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture
US7603098B2 (en) 2004-03-31 2009-10-13 Broadcom Corporation Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection
US7603085B2 (en) 2004-03-31 2009-10-13 Broadcom Corporation Bandpass filter with integrated variable gain function
US8675777B2 (en) 2004-03-31 2014-03-18 Broadcom Corporation Programmable if frequency filter for enabling a compromise between DC offset rejection and image rejection
EP1608061A1 (en) * 2004-06-14 2005-12-21 Broadcom Corporation Frequency converter using a tunable bandpass filter

Also Published As

Publication number Publication date
DE3223904C2 (en:Method) 1991-02-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: H03D 3/00

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)