CH269957A - Uberlagerungsempfänger zum Empfang von durch Frequenzverschiebungen gekennzeichneten Telegraphiesignalen. - Google Patents

Uberlagerungsempfänger zum Empfang von durch Frequenzverschiebungen gekennzeichneten Telegraphiesignalen.

Info

Publication number
CH269957A
CH269957A CH269957DA CH269957A CH 269957 A CH269957 A CH 269957A CH 269957D A CH269957D A CH 269957DA CH 269957 A CH269957 A CH 269957A
Authority
CH
Switzerland
Prior art keywords
receiving
frequency shifts
signals characterized
overlay receiver
telegraphy signals
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH269957A publication Critical patent/CH269957A/de

Links

Classifications

    • 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
    • H03J7/042—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 with reactance tube
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/16—Frequency regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
CH269957D 1947-12-13 1948-12-11 Uberlagerungsempfänger zum Empfang von durch Frequenzverschiebungen gekennzeichneten Telegraphiesignalen. CH269957A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL269957X 1947-12-13

Publications (1)

Publication Number Publication Date
CH269957A true CH269957A (de) 1950-07-31

Family

ID=19781884

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269957D CH269957A (de) 1947-12-13 1948-12-11 Uberlagerungsempfänger zum Empfang von durch Frequenzverschiebungen gekennzeichneten Telegraphiesignalen.

Country Status (5)

Country Link
BE (1) BE486276A (en])
CH (1) CH269957A (en])
DE (1) DE807959C (en])
FR (2) FR976416A (en])
GB (1) GB681543A (en])

Also Published As

Publication number Publication date
FR176416A (en])
GB681543A (en) 1952-10-29
DE807959C (de) 1951-07-09
FR976416A (fr) 1951-03-19
BE486276A (en])

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