The present invention relates to a RF communication system with a chaotic signal generator and the chaos signal generating method. The RF communication system, and a chaotic signal generator which generates a chaotic signal having a plurality of frequency components in a predetermined frequency band, a modulator for synthesizing the data signal representing the information in the chaotic signal generates a chaotic carrier, chaotic synthesized in modulator It has a transmission circuit including an antenna for transmitting a carrier wave. Here, the chaotic signal generator, and of changing the DC bias power to the high frequency oscillating power, high-frequency power signal including a resonance unit that generates a broadband signal having a plurality of frequency components by filtering a predetermined frequency band. As a result, by using a chaotic signal a high frequency signal of the broadband in a carrier wave, it can significantly reduce the power consumption of the RF communication system it is possible to not only be able to implement the low power of the RF communication system, reducing the size of the RF communication system is. And a RF communication system with a cost reduction becomes easy implementation, high power efficiency of the chaotic signal generator. ; UWB, RF communication, the chaos signal, the non-linear element, LPF, BPF
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