| The Compass navigation system has entered the practical stage. It has begun to enterpeople’s lives. Developing applications to meet the needs of the Compass has become atopic of widespread concern of academia and industry, This paper focuses on the CompassII B1band, research on the receiver RF front-end key modules including antenna and lownoise amplifier. Lay the foundation for the implementation of the Compass applicationsystem.The antenna in the paper is a double cross-aperture coupled single feed circularlypolarised patch antenna, using HFSS and CST to simulate the structure of the antenna, thenmanufacture the antenna samples and measured in the chamber. The results show that: thedesign of the antenna is feasible, it performs well in the receiving system. The low noiseamplifier is simulated in the Advanced Design System(ADS). The thesis summarizes thebasic considerations when using computer software to assist the design. According to theresults of simulation, I made the PCB board and debug the board to get a well performancelow noise amplifier, then summary the experience and points when debugging the lownoise amplifier in detail. Finally the paper achieve the Compass II RF front-end design.The thesis consists of three parts. the first part is the introduction of Compass IIsystem, tell the important parameters in the receiver system, and show the methods andprinciples of measurement of these parameters. The second part is the research and designin the COMPASS II stacked antenna. Tell how to use EDA software to aide design, andshow the actual test results. The third part is the research and design in the COMPASS IIlow noise amplifier. Finally achieve the desired design goals, laid the foundation for thefurther application design. |
