3mm波段接收前端设计

发布时间：2018-01-27 03:17

本文关键词： 毫米波 3mm 接收前端超外差混合集成　出处：《电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：在毫米波电路与系统中,处于毫米波系统关键地位的接收前端对系统的性能起着至关重要的作用。鉴于毫米波技术在现代军事、通信等领域日渐深入地应用,对毫米波关键技术的研究就显得越加迫切。然而目前国内对高频段尤其是3mm波段电路与系统的研究和报道都比较少。本课题的任务就是对3mm接收前端的理论和设计方法进行研究。本文所设计的3mm接收前端系统用于雷达接收机,采用本振端固定点频的超外差式接收结构设计,用混合集成电路方式实现。该接收前端包括两条接收支路,每条接收链路由过渡、低噪声放大器、混频器、滤波器等组件组成。根据项目的研究目标和指标要求,论文详细地分析了3mm接收机前端系统的整体设计方案,并对其中各子电路进行了指标细化、分配和估算。重点研究了接收支路中过渡单元、滤波电路、低噪声放大器、混频器的基本理论和设计方法,并对各单元组件进行了仿真设计,尤其就对系统性能影响较大的部分关键组件进行了单独加工与实测。结合设计的无源组件与选取的固态单片,对接收支路进行了电路布局以及腔体结构的设计。最终完成系统的性能参数估算和测试,结果显示各项指标基本达到项目指标要求。最后,总结了本文主要的研究内容并得出结论,给出后续工作可以加强和改进的方向。本论文所进行的工作在一定程度上为今后毫米波接收前端技术领域的研究提供了相关经验。
[Abstract]:In millimeter-wave circuits and systems, the front-end in the key position of millimeter-wave system plays an important role in the performance of the system. The research on the key technology of millimeter wave is more and more urgent. However, there are few researches and reports on the circuits and systems in the high frequency band, especially in the 3mm band. The task of this subject is to study the 3mm receiver front end. The 3mm receiver front-end system designed in this paper is used for radar receiver. The superheterodyne receiving structure with fixed point frequency at the local oscillator end is designed and realized by hybrid integrated circuit. The front end of the receiver includes two receiving branches, each receiving link is transitioned, low noise amplifier, mixer. Filter and other components. According to the research objectives and requirements of the project, the paper analyzes the overall design scheme of the 3mm receiver front-end system in detail, and the sub-circuits are refined. Distribution and estimation. The basic theory and design method of transition unit, filter circuit, low noise amplifier and mixer in the receiving branch are studied, and each unit module is simulated and designed. In particular, some key components which have a great impact on the system performance have been processed and measured separately, combined with the design of passive components and the selection of solid state monolithic. The circuit layout and cavity structure of the receiving branch are designed. Finally, the performance parameters of the system are estimated and tested. The results show that the indicators basically meet the requirements of the project. Finally. This paper summarizes the main research content and draws a conclusion. The future work can be strengthened and improved. To a certain extent, the work carried out in this paper provides relevant experience for the research of millimeter-wave receiver front-end technology in the future.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN015;TN851

【共引文献】