Patent ID: 8005220

Claim:
A radio frequency (RF) communication system comprising: a chaotic signal generator which generates a chaotic signal having a plurality of frequency components at a predetermined frequency band; a modulator which generates a chaotic carrier by combining the chaotic signal with a data signal; and a transmission circuit comprising an antenna to transmit the chaotic carrier generated by the modulator, wherein the chaotic signal generator comprises an oscillator which converts a direct current (DC) bias power into the high frequency power, and a resonating unit which generates a wideband signal having a plurality of frequency components by passing the predetermined frequency band of the high frequency power signal, and wherein the resonating unit comprises: a first filter which receives the high frequency power from the oscillator and passes at least a part of a harmonic signal of the high frequency power as a filtered signal; and a second filter which generates the wideband signal having the plurality of frequency components of the predetermined range of frequency band by oscillating the filtered signal, and provides the oscillator with the wideband signal.