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EP0080157A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method and arrangement for demodulating frequency-modulated signals using sampled values

Assignee: Siemens AG
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Filing: 1982-11-16
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Granted: —
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Expires: 2002-11-16
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Abstract

Abstract Translated from German Die Erfindung betrifft ein Verfahren und eine Anordnung zum Demodulieren zeitdiskreter frequenzmodulierter Signale, bei dem Abtastproben des zu demodulierenden Signals (1) derart miteinander verknüpft werden, daß aus dem Ausgangssignal (U 2 ) auf die Momentanfrequenz (f) des zu demodulierenden Signals (1) geschlossen werden kann. Zur Gewinnung des Ausgangssignals (U 2 ) wird eine erste gewichtete Summe (S z ) von k Abtastproben (Dividend) durch eine zweite gewichtete Summe (S N ) von m Abtastproben (Divisor) dividiert (k, m = 1, 2, 3...), wobei die Abtastproben äquidistant so gewählt werden, daß bei einer Darstellung der Abtastproben (A 1 bis A 6 ) im Zeigerdiagramm, bei der jede Abtastprobe (A 1 bis A 6 ) als komplexe Zahl einem Vektor (A 1 bis A 6 ) entspricht, die Phasenlage der Vektorsumme des Dividenden (S z ) um der Phasenlage der Vektorsumme des Divisors (S N ) entspricht (n = 0, 1.2,...). The invention relates to a method and an arrangement for demodulating time-discrete frequency-modulated signals, in which samples of the signal (1) to be demodulated are linked to one another in such a way that from the output signal (U 2 ) to the instantaneous frequency (f) of the signal (1) to be demodulated. can be closed. To obtain the output signal (U 2 ), a first weighted sum (S z ) of k samples (dividend) is divided by a second weighted sum (S N ) of m samples (divisor) (k, m = 1, 2, 3. ..), the samples being chosen equidistantly so that when the samples (A 1 to A 6 ) are represented in the vector diagram, in which each sample (A 1 to A 6 ) is a complex number a vector (A 1 to A 6 ) corresponds to the phase position of the vector sum of the dividend (S z ) around the phase position of the vector sum of the divisor (S N ) (n = 0, 1.2, ...).

Inventors

  • 👤 Wolfgang Dipl.-Ing. Haussmann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 07:51
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/006; H03D2200/00; H03D2200/0041; H03D2200/006; H03D2200/0062

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