Abstract
The chaotic UWB RF transceiver system is designed in CMOS 0.18um technology with flexible chaotic signal generation. Although the chaotic UWB technology is expected as a promising solution for near-range connectivity services, it has a limitation for commercial applications due to a fixed-band chaotic signal generator. In this paper, the noble flexible chaotic signal generator with adjustable frequency range and bandwidth is proposed. It has a simple architecture configuring of a noise generator, an FM modulator, and control circuits. The center frequency of the chaotic signal can be controlled from 3.5 to 4.5 GHz, while its bandwidth is adjusted from 70 to 620 MHz. The key block of the chaotic UWB RF transceiver is fabricated in CMOS 0.18um technology. The performance of the chaotic transceiver system is evaluated for transmission of digital data of 15 Mbps and non-coherent adaptive detection scheme. The proposed system can be an excellent candidate for short-range connectivity services, as well as inexpensive systems.
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