衬底集成波导毫米波滤波器的研究

发布时间：2018-05-01 20:42

本文选题：微波毫米波 + 带通滤波器　；参考：《南京理工大学》2015年硕士论文

【摘要】：由于无线通信的运用越来越广泛,微波元器件也朝着小型化,高频化,集成化的方向发展。衬底集成波导(SIW)是一种新型的平面传输结构,它兼顾传统矩形波导和平面微带线结构的双重优点。随着其理论的成熟,其实际运用也越来越广泛。本文是基于衬底集成波导,对毫米波带通滤波器和微波双工器进行研究与设计。本文首先描述了该论文的研究背景及其意义,了解了微波毫米波频段对现代通信技术的重要性；对微波频段进行划分以及对频段对应频谱具有的特点进行了简单介绍；对微波毫米波、滤波器以及双工器的历史发展进行介绍。通过引用现在最新的科研成果对微波毫米波滤波器以及双工器的研究现状进行了描述。然后介绍了滤波器的相关理论知识,介绍了滤波器的分类以及滤波器的相关技术指标,通过对几类归一化低通滤波器原型的介绍,以及低通原型到高通,带通,带阻的频率变换,着重介绍了低通到带通的频率变换,对滤波器谐振腔之间的耦合进行分析,了解了耦合系数以及耦合的方式。通过以上的分析,对滤波器的相关理论知识有了基础而又全面的了解。随后,详细介绍SIW的相关知识以及SIW毫米波滤波器的设计,先介绍了矩形波导和SIW的相关知识,通过查阅资料了解了矩形波导与SIW之间等效的前提条件以及等效公式。在结构上介绍了SIW与外部平面结构之间的过渡,通过实验得到通孔半径,谐振腔以及通孔之间的间距对谐振频率的影响,以及零点的添加。最后完成了V波段毫米波SIW滤波器的设计,其通带频率为61GHz-66GHz,体积为2.64mm×2.64mm×0.24mm以及W波段毫米波SIW滤波器的设计,其通带频率为95GHz-104GHz,其体积为3.4mm×1.36mm×0.134mm。最后,主要详细介绍双工器的相关知识以及SIW的微波双工器的设计,先介绍了双工器的基本知识,包括双工器的分类和滤波器的设计方案,其主要是全互补双工器以及带通滤波器的串并联。在完成微波双工器的设计时采用带通滤波器的并联方案,先完成两个频段不同的带通滤波器的设计,然后将两个滤波器在输入端进行并联,完成最终的设计。最终设计的双工器通带频率为7.6GHz-7.8GHz和8.15GHz-8.35GHz,体积为47.64mm×62mm×0.807mm。
[Abstract]:Because of the wide application of wireless communication, microwave components are developing towards miniaturization, high frequency and integration. Substrate integrated waveguide (SIW) is a new planar transmission structure, which takes into account the dual advantages of traditional rectangular waveguide and planar microstrip line structure. With the maturity of its theory, its practical application is more and more extensive. This paper studies and designs millimeter wave bandpass filter and microwave duplex based on substrate integrated waveguide. This paper first describes the research background and significance of this paper, understands the importance of microwave millimeter wave frequency band to modern communication technology, divides the microwave frequency band and introduces the characteristics of the corresponding frequency spectrum. The history of microwave millimeter wave, filter and duplex is introduced. The research status of microwave millimeter wave filter and duplex is described by citing the latest research results. Then it introduces the relevant theoretical knowledge of the filter, the classification of the filter and the relevant technical index of the filter, through the introduction of several kinds of normalized low-pass filter prototype, as well as the low-pass prototype to the high-pass, band-pass, The frequency conversion from low pass to band pass is introduced. The coupling between resonators of filter is analyzed and the coupling coefficient and the mode of coupling are understood. Through the above analysis, we have a basic and comprehensive understanding of the relevant theoretical knowledge of the filter. Then, the related knowledge of SIW and the design of SIW millimeter wave filter are introduced in detail. Firstly, the knowledge of rectangular waveguide and SIW is introduced, and the precondition and equivalent formula of the equivalence between rectangular waveguide and SIW are obtained by consulting the data. The transition between the SIW and the external plane structure is introduced. The influence of the through radius, the space between the cavity and the through hole on the resonant frequency and the addition of zero point are obtained by experiments. Finally, the design of V-band millimeter-wave SIW filter is completed. Its passband frequency is 61GHz ~ 66GHz, its volume is 2.64mm 脳 2.64mm 脳 0.24mm and W band millimeter wave SIW filter. Its passband frequency is 95GHz-104GHz, and its volume is 3.4mm 脳 1.36mm 脳 0.134mm. Finally, the related knowledge of the Duplexer and the design of the SIW microwave Duplexer are introduced in detail. The basic knowledge of the Duplexer is introduced first, including the classification of the Duplexer and the design scheme of the filter. It is mainly the series and parallel connection of full complementary duplex and bandpass filter. In the design of microwave duplex, the parallel scheme of bandpass filter is adopted. The design of two bandpass filters with different frequency bands is completed first, and then the two filters are connected in parallel at the input end to complete the final design. The final designed duplex is 7.6GHz-7.8GHz and 8.15GHz-8.35GHz, and the volume is 47.64mm 脳 62mm 脳 0.807mm.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713

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