Research on analog and digital mixed signal LSI for wireless communication

本研究旨在开发应用于无线通讯系统中射频接收机的复杂模数转换器电路。提出了一种新的AD转换器结构，只需增加一些无源电容和开关就可以实现更高的性能，不需要额外的运算放大器组成的模拟电路，在不增加额外功耗的情况下可以有效地提高AD转换器的性能。MATLAB和SPICE仿真结果验证了所提结构的有效性。大规模集成电路芯片也被制造，以确认所提出的架构的有效性。

This research is about the development complex AD converter circuits for the applications to RF receivers in wireless communication systems. We proposed new architectures of AD converter, and the higher performance can be realized just by adding some passive capacitors and switches, the additional analog circuits composed of an operational amplifier is not necessary, and the performance of the AD converter can be effectively raised without additional power dissipation. MATLAB and SPICE simulation results show the effectiveness of the proposed architectures. LSI chips are also fabricated to confirm the validity of the proposed architectures.