无线数传模块中小信放大器的设计与仿真.doc

毕业设计（论文） 无线数传模块中小信号放大器 的设计与仿真 摘 要 本文主要应用高频小信号放大器的相关知识，分别设计了一种中频放大器和高频放大器的仿真电路，并完成了相应的仿真，讨论了中频放大电路的放大倍数选择和谐振回路的作用。 首先是介绍本次设计课题的背景，其中包括课题的研究和相应技术的当前现状和发展趋势，并简单阐述了无线数传模块的特点，优势，以及数传模块的原理。之后对高频小信号放大器做了一个简单的介绍。然后简单叙述了高频小信号放大器的工作原理，其中主要叙述了高频小信号放大器的基本知识，等效电路，调谐电路，及增益，通频带等各项参数的作用。这里主要是参考了《高频电子线路》一书。 在本次设计中，电路的仿真环境采用的是multisim仿真，因此在第三章简单叙述了一下multisim软件的仿真环境，各种元件库，仿真工具等。 然后，分别详细阐述了中频放大器和高频放大器的设计电路图，及其相应的设计过程和详细叙述了中频放大电路的仿真过程和仿真结果，并在此基础上叙述了高频小信号放大电路的仿真结果。 关键词　无线数传　放大器　Multisim仿真 Abstract The article mainly applying the knowledge of high frequency small signal-amplifier, has separately designed one kind of intermediate frequency amplifier and the radio-frequency amplifiersimulation electric circuit, completed the corresponding simulation,and discussed the supersonic amplification electric circuitenlargement factor choice and the resonant tank ＇function. First,this paper introduced the background of this design topic, including thetopic research and the corresponding technical current presentsituation and the development tendency, and simply elaborated the character and advantage of the module without the line number, as well as the the principle of number passes on the module. this paper made a simple introduction about the high frequency smallsignal-amplifier, and then simply narrated the working principle of high frequency smallsignal-amplifier,mainly narrating the elementary knowledge of high frequencysmall signal-amplifier, and the function of some parameter for exemle, equivalent circuit,tuning circuit, and gain, tongpindai and so on.this paper mainly refers to High frequency Electronic circuit . In this design, the electric circuit simulation environment uses the multisim simulation, therefore we simply narrated the multisimsoftware simulation environment, each kind ofpart storehouse, simulation tool and so on in the third chapter. Then, the distinction in detail elaborated the intermediate frequencyamplifier and the radio-frequency amplifier design circuit diagr