基于数字卫星接收机的功率分配器的设计与制作 熊碧虎 (定稿).docVIP

　　　　　　 本科毕业论文（设计） 题 目: 基于数字卫星接收机的功率 分配器的设计与制作 院 系： 物理与电子信息科学系 专 业： 电子信息科学与技术 姓 名： 熊碧虎 学 号： 080601401068 指导教师： 陈雨青 沈承舒 教师职称： 教授 填写日期：2011 年 11 月 26日 摘 要 功率分配器是一种将一路输入信号能量分成两路或多路输出相等或不相等能量的器件。一个功的输出端口之间应保证一定的隔离度。Multisim10分别进行设计与仿真，设计内容包括使用ADS2009设计功率分配器的具体步骤，优化S参数，以达到相应的性能指标，并生成相应的版图，然后使用PROTEL99SE将上述生成版图绘制成可用于制作PCB印刷板的版图；使用Multisim10设计的电路主要分为一分二部分，桥式一分四部分，三角形分配部分，Y型分配部分和一分二耦合分配部分。五个部分电路既相互独立，又可以通过级联的形式行成多功分，最终做出实物，将信号输入端接入高频头，其他输出端口接入卫星电视接收机，此时能正常收看电视。 关键词：数字卫星电视接收机；功率分配器；ADS2009；Multisim10 Abstract Power splitter is a signal to an input of energy output is divided into two or more equal or unequal energy devices. A power splitter output ports should ensure a certain degree of isolation. The graduation project is designed based on digital satellite TV reception system power divider, for reducing the digital satellite TV receiver antenna of waste, the power splitter is mainly used for the ground receiver antenna tuner output is the way television signal distribution to two or more outputs, and coaxial cable access by multiple satellite TV receiver, multiple receivers in order to achieve multiple users share a multiple antenna television purposes, and can not affect to the quality and effectiveness ratings. The attenuation should be small enough to make the image clear, low noise, high resolution. Makes the pass-band port reflection coefficient and transmission coefficient between ports are small, power divider ratio of 1 to C-band transmission with cable and Ku-band broadcast television signals. The main design using Agilents ADS2009 and Multisim10 microwave RF simulation software design and simulation, respectively, the design includes design of power divider using the ADS2009 specific steps to optimize S-parameters, in order to achieve the appropriate performance indicators, and gene