METHOD FOR MODULATING AN OUTPUT VOLTAGE OF A RF TRANSMITTER CIRCUIT, AND RF TRANSMITTER CIRCUIT

摘要

The present invention is a voltage controlled oscillator, a digital-analog converter, comprising an antenna circuit, and relates to a method for modulating the output voltage of the transmitter circuit, the method directly to the antenna circuit the output signal of sufficient power from the voltage controlled oscillator and transmitting to, and a step for directly modulating the frequency of the output signal of the voltage controlled oscillator. The present invention is a voltage controlled oscillator, a digital-analog converter, relates to a transmitter circuit including an antenna circuit, the voltage controlled oscillator is directly transmitted to the antenna circuit, an output signal of sufficient power, said digital-to-analog having a tank circuit converter modulates the output frequency of the voltage controlled oscillator. In order to modulate the frequency of the voltage controlled oscillator, a capacitive load circuit may be connected to the tank circuit or crystal oscillator circuit of the voltage controlled oscillator.