毕业设计说明书中文摘要 定向耦合器是将输入信号按照预定幅相要求分配后沿指定输出端口输出的四端口器件，是微波系统中常见的具有一定方向性的功率分配器。从结构上看，定向耦合器的种类很多、差异较大，可以构成定向耦合器的有同轴线、微带线、波导、带状线等。从用途上看，定向耦合器的用途很广，例如功率监视系统、功率分配系统、接收机中的混频器等。78595

　　近几年来，因为容易加工、体积小、性能好等原因，微带线和带状线耦合器得以迅速发展，为常见的耦合器类型。但与波导定向耦合器相比，此类普遍承受功率低。因此，在大功率系统中，主要应用的还是承受功率高、工作带宽宽的波导定向耦合器。

　　本论文主要研究工作如下：

1。介绍了波导定向耦合器的基本概念、发展现状、研究背景和意义。

2。介绍了波导定向耦合器的原理和本文要设计的魔T的工作、设计的理论基础。

3。简单介绍了传输线、波导的原理和应用。

4。确定本文要设计的魔T的设计指标，参考其他文献，制定方案并确定耦合器的相关尺寸，计算参数，用HFSS软件建立波导定向耦合器模型进行仿真优化，以满足设计指标的要求，给出仿真曲线。

毕业论文关键词  波导定向耦合器    功率分配    HFSS 

毕业设计说明书外文摘要

Title The design of waveguide directional coupler based on HFSS

Abstract Directional coupler is a four port device, which is required to be distributed in accordance with predetermined amplitude and phase。 It is a common power distributor in microwave system。 From a structural perspective, the types of directional coupler, the difference is large, can constitute a directional coupler with coaxial line, microstrip line, waveguide, strip line, etc。。 From the use of perspective, the use of directional coupler is very wide, such as power monitoring system, power distribution system, the receiver mixer, etc。。

In recent years, due to the easy processing, small size, good performance and other reasons, the microstrip line and strip line coupler can be developed rapidly, and become the common type of coupler。 But compared with waveguide directional coupler, this kind of universal low power。 Therefore, in the power system, the main application of the high power capacity, or work with a broad waveguide directional coupler。

Common waveguide directional couplers are: single hole directional coupler, dual directional coupler, cross hole fixed directional coupler, a multihole directional coupler。

The main research work of this paper is as follows:

1． introduces the principle and design of the waveguide directional coupler, and gives the relevant dimensions, parameters and calculation formula of the coupler, which provides a theoretical reference for the simulation。

2． using HFSS simulation software, the establishment of waveguide directional coupler model, simulation design, give the simulation curve。

Keywords  waveguide directional coupler   Power allocation   HFSS

目录

目录 I

1 引言 1

1。1定向耦合器的基本概念 1

1。2研究背景和意义 2

1。3定向耦合器的发展现状