_射频接收机系统和电路分析ECE1371 Term Paper RF Receiver Systems and Circuits Dennis Ma I. Introduction In the past decade, portable wireless communication systems have experienced tremendous growth. Such rapid growth has created demand for portable wireless devices that are smaller, lighter, cheaper and of higher performance than ever, and this drives IC designers and engineers to innovate new system architectures and circuit topologies. One goal is to build RF receiver IC’s that has low power consumption, high sensitivity and wide dynamic range, and to reduce the number of off-chip passive components in the circuit. This paper therefore focuses on the receiver portion of a wireless device, providing a review of conventional receiver architectures as well as some of the latest research in RF receiver IC’s is prov……