毫米波基片集成波导功率分配合成器设计与实现word格式论文.docxVIP

摘要摘要自上个世纪开始，许多国家的学者就对微波毫米波功率合成技术开展了一系 列的研究。但是随着工作频率的不断增加，固态器件的尺寸以及容量不断的减小， 再加上毫米波高频段的测试分析仪器通常都是采用矩形波导作为标准接口。使得 探索毫米波高频段的功率分配/合成技术，以及矩形波导过渡结构变得很有必要。 基片集成波导作为一种平面电路结构，因具有与矩形波导相似的电磁场特性，从 20 世纪初该技术被提出来后，就引起了学者的广泛关注。在本文中，我们对基片集成波导与矩形波导的相似特性进行了理论分析，并 且系统的研究了基片集成波导结构对于其性能的影响。同时我们在分析了它与波导的等效关系后，将基片集成波导运用到功率合成技术中，提出了一种基于基片 集成波导的纵向开槽功率分配/合成方案，该结构具有良好的幅相特性。同时本文结合实际器件测试条件，设计了一种矩形波导-基片集成波导的过渡 结构。本文将对极鳍线结构用于毫米波基片集成波导-矩形波导的过渡设计中，该结构在 86.4-106.1GHz 频段内，其回波损耗均小于-15dB，插入损耗低于-2dB，它具有良好的测试性能。 最后我们将对极鳍线过渡结构结合到基于基片集成波导纵向开槽功率分配/合成方案中，该四路功率分配/合成器背靠背结构在 92.8-93.8GHz 频段内，回波损耗低于-10dB，插入损耗在-3.9dB 左右，测试结果基本符合设计要求。这也为基片集 成波导在毫米波空间功率合成技术的运用奠定了良好的基础。关键词：基片集成波导 纵向开槽 功率分配/合成器 对极鳍线过渡ABSTRACTABSTRACTSince the mid-20th century, researchers from different countries have conducted a series of researches on microwave and millimeter wave power combining technology. However, with the increasing of operating frequency, the sizes and capacities of solid-state devices have decreased continually, and high frequency millimeter wave testing of the instruments usually were used as a standard rectangular waveguide interface. So exploring the millimeter wave high frequency power divider/combiner technology and rectangular waveguide transition structure becomes very necessary. As a planar circuit structure, SIW has a rectangular waveguide characteristics similar to theelectromagnetic field. This structure has been proposed since the twentieth century，ithave been attracted wide attention of scholars.In this paper, we performed a theoretical analysis of the similarity between SIW and the rectangular waveguide, and the systematic study of the structure of the substrate integrated waveguide effect on its performance. At the same time we analyze the equivalent relationship between SIW and rectangular waveguide. We will apply SIW to the power divider/combiner technology, we propose a method based on SIW longitudinal grooving power divider/combiner scheme, the structure has good amplitude and phase characteristics.According