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AMPLITUDE MODULATION TRANSMITTER

Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1978-05-10
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Granted: —
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Expires: 1998-05-10
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Abstract

Abstract Translated from French Emetteur à modulation d'amplitude à porteuse commandée, dans lequel l'amplitude de la porteuse est réduite aux faibles amplitudes de la tension modulante (programme), afin d'améliorer le rendement. L'amplificateur de modulation 5' utilisé est constitué par un amplificateur de commutation 10 d'impulsions modulées en durée, avec en amont un modulateur 9 commandé par la tension modulante. La grandeur de commande U equiv est appliquée, directement ou non, au modulateur d'impulsions en durée 9, en plus de la tension modulante Uz. L'invention est applicable en particulier aux émetteurs de grande puissance. A controlled carrier amplitude modulated transmitter, in which the amplitude of the carrier is reduced at low amplitudes of the modulating voltage (program), in order to improve efficiency. The modulation amplifier 5 ′ used is constituted by a switching amplifier 10 of duration modulated pulses, with upstream a modulator 9 controlled by the modulating voltage. The control variable U equiv is applied, directly or indirectly, to the duration pulse modulator 9, in addition to the modulating voltage Uz. The invention is particularly applicable to high power transmitters.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-07 23:15
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/24; H03C; H03C1/00; H03C1/62; H03F2200/00; H03F2200/324; H04; H04B; H04B1/00; H04B1/02; H04B1/04; H04B2001/0491

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

DE1270130B Cited
DE1766586A1 Cited
FR2286547A1 Cited

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