CH219809A - Wechselstromtelegraphieanlage mit Frequenzverdopplung. - Google Patents

Wechselstromtelegraphieanlage mit Frequenzverdopplung.

Info

Publication number: CH219809A
Authority: CH; Switzerland
Prior art keywords: frequency doubling; telegraphy system; telegraphy; doubling; frequency
Prior art date: 1939-08-24

Application number

Other languages

English (en)

Inventor

Aktiengesellschaft C Lorenz

Original Assignee

Lorenz C Ag

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.)

1939-08-24

Filing date

1941-07-11

Publication date

1942-02-28

1941-07-11 Application filed by Lorenz C Ag filed Critical Lorenz C Ag

1942-02-28 Publication of CH219809A publication Critical patent/CH219809A/de

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)

CH219809D 1939-08-24 1941-07-11 Wechselstromtelegraphieanlage mit Frequenzverdopplung. CH219809A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE219809X		1939-08-24

Publications (1)

Publication Number	Publication Date
CH219809A true CH219809A (de)	1942-02-28

Family

ID=5832086

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH219809D CH219809A (de)	1939-08-24	1941-07-11	Wechselstromtelegraphieanlage mit Frequenzverdopplung.

Country Status (3)

Country	Link
BE (1)	BE441945A (de)
CH (1)	CH219809A (de)
FR (1)	FR875252A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2776662A (en) *	1953-04-14	1957-01-08	Widrich Anton	Cigarette holder

0
- BE BE441945D patent/BE441945A/xx unknown
1941
- 1941-07-11 CH CH219809D patent/CH219809A/de unknown
- 1941-08-13 FR FR875252D patent/FR875252A/fr not_active Expired

Also Published As

Publication number	Publication date
FR875252A (fr)	1942-09-14
BE441945A (de)

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