S波段快速跳频源设计

发布时间：2018-05-17 17:04

本文选题：锁相源 + 快速跳频　；参考：《东南大学》2017年硕士论文

【摘要】：在当前军事领域,雷达系统、通信系统、弹载导引系统及引控系统都需要利用跳频源的高速跳频特性来获得高分辨率、更近的目标识别距离、高质量数据传输以及更强的抗干扰或对抗能力。本论文研究的S波段快速跳频源主要应用于某弹载系统,是引控小型化雷达分系统中关键的高性能、高可靠微波电路组件。本论文主要通过对快速跳频源技术的研究,采用多个频率源通过开关切换的电路方式,弥补锁相环频率建立时间的较长的缺陷,解决了 ns级快速跳频的关键技术难题;采用微波多层电路板设计、槽线和双层盖板的结构设计以及多芯片微组装、激光封焊工艺设计,解决了产品在小体积下的功能实现、宽温度范围内高隔离度以及组件整体密封等问题;采用抗干扰设计,优化提高锁相源的输出隔离,解决了负载牵引带来的频率及相位稳定性问题。本论文主要论述了方案设计,可行性论证,器件选择和仿真计算,电路板、腔体结构和组装工艺设计,以及样品制作和电性能测试分析等方面内容。本论文研究的S波段快速跳频源,具有明确的应用背景和市场价值,无论在民用或是军用通信领域均有着非常重大推广意义和广阔的应用前景。
[Abstract]:In the current military field, radar system, communication system, missile guided system and lead control system all need to use the high speed frequency hopping characteristic of frequency hopping source to obtain high resolution and closer target recognition distance. High-quality data transmission and stronger anti-jamming or countermeasures. In this paper, the S-band fast frequency hopping source is mainly used in a projectile system. It is a key high performance and high reliability microwave circuit module in the miniaturized radar subsystem. In this paper, through the research of the fast frequency hopping technology and the switch switching circuit of multiple frequency sources, the defect of the longer frequency establishment time of the PLL is made up, and the key technical problem of the ns fast frequency hopping is solved. The design of microwave multilayer circuit board, the structure design of slot line and double layer cover board, the multi-chip micro-assembly and laser sealing welding process are adopted, which solves the function realization of the product in small volume. In order to solve the problem of frequency and phase stability caused by load traction, the anti-interference design is used to optimize the output isolation of the phase-locked source and to solve the problems of high isolation in wide temperature range and integral sealing of components. This paper mainly discusses the project design, feasibility demonstration, device selection and simulation calculation, circuit board, cavity structure and assembly process design, as well as sample preparation and electrical performance test and analysis. The S-band fast frequency hopping source studied in this paper has a clear application background and market value. It has great significance and broad application prospect in both civil and military communication fields.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN914.41

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