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We discuss a concept of Direct Chaotic Communications (DCC) that is based on the following ideas: (1) chaotic oscillator generates signals directly in a specified microwave band; (2) information component is put in the chaotic signal by means of formation of an appropriate stream of chaotic radio pulses; (3) envelope detection is used. The principle of communications is confirmed experimentally in microwave band. Transmission rates up to 100 Mbps are demonstrated.

This letter presents experimental evidence of how to use Chua's circuit for creating a system transmitting complex analog signals such as speech and music. In comparison with other proposed systems our system has the advantage of being operational over a wide dynamic range of information to chaotic signal ratios.

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