TRANSMITTER, COMMUNICATION SYSTEM AND METHOD OF COMMUNICATING

PROBLEM TO BE SOLVED: To provide a transmitter, a communication system and a method of communicating capable of stably communicating by surely communicating prescribed information, even if the communication is disturbed by other radio waves or the like. SOLUTION: When a power source voltage supplied from a pulse signal generator 20 is modulated according to a modulation signal from a voice signal generator 10 by a modulator 30, an amplitude modulated and frequency modulated pulse signal can be obtained. Fundamental wave components and two harmonic components are extracted from this pulse signal by a signal extractor 40. Transmitted signals are amplified, and a plurality of waves to be modulated by the same information are transmitted simultaneously as the radio waves from an antenna 80. A receiver side selectively receives an arbitrary radio wave from among the plurality of the waves, so that, stable radio communication can be conducted.