HIGH PERFORMANCE SHORT-WAVE BROADCASTING TRANSMITTER OPTIMISED FOR DIGITAL BROADCASTING

摘要

the transmitter comprises a tube (1) with power grid is excited by avariable phase signal through an excitation device (2), andthe anode is amplitude modulated by the output signal of the modulator (3).the phase and amplitude of the signals applied to the gate, respectively.the anode of the tube (1), the representative of the phase and amplitude of the signal.difficult to transmit. for the characteristic of amplifierthe device as a whole is independent of the amplitude of the linearthe signal transmitting device (2) has an excitationcharacteristic of linear amplification for small amplitudes of the signal.transmission system and is saturated when the amplitude of the signal ata threshold value is determined to transmit data. applications:the short wave.