ES177220A1 - IMPROVEMENTS IN DEMODULATION SYSTEMS - Google Patents

IMPROVEMENTS IN DEMODULATION SYSTEMS

Info

Publication number
ES177220A1
ES177220A1 ES0177220A ES177220A ES177220A1 ES 177220 A1 ES177220 A1 ES 177220A1 ES 0177220 A ES0177220 A ES 0177220A ES 177220 A ES177220 A ES 177220A ES 177220 A1 ES177220 A1 ES 177220A1
Authority
ES
Spain
Prior art keywords
signal
wave
demodulation
systems
demodulation systems
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.)
Expired
Application number
ES0177220A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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
Priority claimed from GB652/41A external-priority patent/GB586115A/en
Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES177220A1 publication Critical patent/ES177220A1/en
Expired legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Mejoras en sistemas de demodulación de una onda modulada por una forma de onda de señal que esencialmente se repite a una frecuencia predeterminada, en los que la onda de señal (detectada o no) y una onda derivada localmente de la misma frecuencia y preferiblemente de la misma forma que la onda de señal son respectivamente aplicadas a dos circuitos de entrada de un detector diferencial o modulador equilibrado.Improvements in systems for demodulation of a waveform modulated by a signal waveform essentially repeating at a predetermined frequency, in which the signal wave (detected or not) and a locally derived wave of the same frequency and preferably from the The same shapes as the signal waveform are respectively applied to two input circuits of a differential detector or balanced modulator.

ES0177220A 1941-01-17 1947-03-13 IMPROVEMENTS IN DEMODULATION SYSTEMS Expired ES177220A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB652/41A GB586115A (en) 1941-01-17 1941-01-17 Methods of and systems for the demodulation of a wave which is repetitive at equal known time intervals

Publications (1)

Publication Number Publication Date
ES177220A1 true ES177220A1 (en) 1947-04-16

Family

ID=38462791

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0177220A Expired ES177220A1 (en) 1941-01-17 1947-03-13 IMPROVEMENTS IN DEMODULATION SYSTEMS

Country Status (1)

Country Link
ES (1) ES177220A1 (en)

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