ES295154A2 - Transmitter device for the transmission of modulated oscillations in amplitude (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements introduced in the object of the main patent no. 277,315, by transmitting device for modulated amplitude oscillations, in which the information content is concentrated mainly in a lateral band, said device comprising a first amplitude modulator fed by the signals that must be transmitted with the associated carrier wave oscillator and the output filter, the carrier oscillation being derived as well as one of the sidebands for the remaining transmission from said amplitude modulator, while, in a second amplitude modulator the signal obtained from the first amplitude modulator is modulated by itself same, the transmitting device further comprising an output filter that passes only the frequency band of twice the carrier frequency, while the signals obtained from the second amplitude modulator are supplied to an amplitude limiter, whose output signals constant amplitude are supplied as oscillations d carrier wave, to an output modulator stage, while the signals to be transmitted are supplied, as modulation signals, to said output modulator, characterized in that at least one of the circuits formed by the circuit is leads to the limiter and by the modulation voltage conductor leading to the output modulator, is provided with a dynamic control device that increases, with an increase in the signal amplitude, the ratio between the modulation index of the signal supplied to the limiter and the modulation voltage of the output modulator. (Machine-translation by Google Translate, not legally binding)