Research On Design And Application Of Reconfigurable Circuit And System

Reconfigurable technology can realize dynamical reconfiguration of hardware and software while system works. It has such advantages as high resource utilization, low power consumption and function adaptive reconstruction, thus having an extensive application prospect in various areas. Currently, one of the hot studies on reconfigurable technology mainly focuses on the reconfigurable computation based on digital system platforms. Not many studies are found on reconfigurable circuit and system design and realization methods aiming at the special application area. Usually they are of low feasibility.This research aims at the technological difficulties of such distinct areas as digital, analogue, biological chips and communication system. The design and implementation methods of reconfigurable circuit and system are proposed. Here are the innovative points of this research:1. The structure of PipeRench pipelined reconfigurable system is improved, and its design method is proposed based on improved structure. It enhances the running efficiency of pipeline hardware. By applying the reconfigurable technology into evolving hardware, a routing evolving strategy of pipeline-based reconfigurable system has been proposed. It can enhance the adaption and selecting speed of hardware evolvement.2. Apply reconfigurable technology into digital and analog mixed-circuit and propose a dynamic reconfigurable Dither circuit related to input signals. This circuit is employed in pipelined ADC and can produce Dither more flexibly. Meanwhile, it reduces Dither hardware resources and power consumption when raising SFDR of ADC significantly.3. Apply reconfigurable technology into biomedical chip design. A front-end of low-voltage, superlow-power, bio- and neuro-signal interface whose bandwidth and gain are reconfigurable has been proposed in this research. Also, the ADC is designed for rail-to-rail operation and the input full-scale is also reconfigurable so that the resolution requirement can be relaxed. The whole interface IC consumes only 36μW from a single 1-V supply, making it suitable for a wide range of low-voltage and low-power bio- and neuro-chip platforms.4. In the area of antenna and impulse radio UWB systems, an antenna selection strategy for different propagation environments has been proposed as well as the evaluation methods of systematic transmission performance in time domains. Moreover, an innovative CMOS switch circuit applied in configurable RF front-ends has been proposed. This switch circuit can exhibit lower than 1-dB insertion loss and higher than 40-dB isolation when working frequency reaches up to 35GHz.