GSMR RF Receiver Design

GSMR is a digital wireless telecommunication system developed for satisfying the railway application。Up to now,European GSMR has well developed.But in china,it has just started and the interfering signal may affect a lot to the nomal operation of the GSMR system。This project provides a solution in such circumstances.This paper combine with the research project of the GSMR interfering source measurement and the need of developing the interference test system,do research on the GSMR RF receiver part。The receiver realized to transfer the signal in GSMR frequency to nearly zero frequency and it's voltage controllable inside of the receiver。This paper deeply and detailed discussed the principle, design and test work on the critical devices of RF (radio frequency) front_end receiver. There are five chapters: The first chapter, simply introduces the background of the paper and technical hard point and the author's work content。The second chapter, introduces the construct of general telecommunicate receiver。Then deeply analyze the central technical parameter of the system and each part's parameter of the RF front-end receiver。The third chapter, particularly expatiate the design of this project and realization of each function。Give out the measured result。And do analysis on the system link and ADS simulation of the whole receiver。The fourth chapter, put forward the problem should pay attention to during hardware design and test .The fifth chapter is summary and looking forward,give out the conclusion of the paper and shortage exist.