微型多模滤波器的研究

发布时间：2018-04-01 16:27

本文选题：双模谐振　切入点：阶跃阻抗谐振　出处：《南京理工大学》2015年硕士论文

【摘要】：高度信息化的社会,无时不刻地在改善人们的生存环境、生活方式。当前移动互联仅用了短短几年时间就得到广泛应用,独立移动性的信息服务成为当前服务行业的主流方向,带给人们生活、工作等方面全方位的便利。在数据量越来越庞大的今天,作为信息服务的桥梁,无线通信面临着前所未有的机会,但却也是更加艰巨的挑战。在无线系统中,滤波器、多工器是隔离、提取信号的关键组成部分,频谱资源有限,为了实现尽量高的频谱应用效率,无线频带的划分要求更加精细。另外,电子行业的趋势是微型化、低成本、集成化。因此,微型高性能滤波器的研制对当前以及未来无线通信的发展来说,显得尤为迫切。传统腔体、同轴和微带传输线滤波器一般不能兼具上述性能,当前的滤波器设计,需要将经典理论与工业工艺密切结合起来。随着LTCC (Low Temperature Co-fired Ceramic)、LCP (Liquid Crystal Polymer)和HTCC (Low Temperature Co-fired Ceramic)工艺和基板材料尤其是陶瓷材料技术的发展,集成化微波无源、有源电路器件得到了良好的发展契机。双模、多模谐振级结构以其优异的电气特性如可控的基模和高次模谐振频率、与生俱来的微型化特性,在工程射频微波滤波器的设计中得到了普遍应用。它的设计效率高且成本低,同时表现出了较好的性能。微型化是当前电子器件、集成电路等行业研究的焦点。在微波滤波器领域,常采用多模谐振技术、电容等效技术和阶跃阻抗谐振技术来实现微型化。本文基于LTCC工艺,分析了大量前沿的微型多模滤波器的研究动态、应用的方法技术,多方面整合了双模、多模谐振与阶跃阻抗谐振特点,采用上述技术与LTCC多层工艺设计了四类结构共五种双、多模谐振滤波器,包括窄带滤波器,多级高性能双模滤波器以及双通带滤波器,验证了多模的灵活可控谐振特性。该五种滤波器结构简单,设计步骤简易,且性能良好。器件体积实现了微型化,五种滤波器体积主要分为两种,分别是4.8mm×3.2mmx 1.5mm和9.12mmx4.2mm×1.5mm。上述五种滤波器可普遍应用于移动通信终端、基站、卫星通信、军用通信等对器件体积和性能要求高的场合。其中一种微型双模高性能滤波器是与某国防研究所的合作项目,仿真结果完全满足指标要求,现已进入后期加工阶段。
[Abstract]:In a highly information society, people are constantly improving their living environment and way of life. At present, mobile interconnection has been widely used in only a few years, and independent mobile information services have become the mainstream direction of the current service industry. Today, as a bridge of information service, wireless communication is facing unprecedented opportunities, but it is also a more difficult challenge. Filter, multiplexer is the key component of isolating and extracting signal, and the spectrum resource is limited. In order to achieve the highest spectrum application efficiency, the division of wireless frequency band is more precise. In addition, the trend of electronics industry is miniaturization. Low cost and integration. Therefore, the development of micro high performance filters is particularly urgent for the current and future wireless communication development. Traditional cavity, coaxial and microstrip transmission line filters can not have the same performance. The current filter design needs to combine classical theory with industrial technology. With the development of LTCC low Temperature Co-fired Crystal Polymer and HTCC low Temperature Co-fired Ceramicics, especially ceramic material technology, integrated microwave is passive. The active circuit device has got a good development opportunity. The dual mode and multimode resonant level structure has the inherent miniaturization characteristics with its excellent electrical characteristics such as controllable fundamental mode and high order mode resonance frequency. It has been widely used in the design of engineering RF microwave filter. It has high efficiency, low cost and good performance. Miniaturization is the current electronic device. In the field of microwave filter, multi-mode resonance technology, capacitance equivalent technology and step impedance resonance technology are often used to realize miniaturization. The research trends of a large number of cutting-edge micro multimode filters are analyzed, and the applied methods and techniques are used to integrate the characteristics of double mode, multimode resonance and step impedance resonance. Five kinds of double structures are designed with the above technology and LTCC multilayer process. The multimode resonant filter, including narrow band filter, multistage high performance double mode filter and double pass band filter, verifies the flexible and controllable resonance characteristics of the multimode filter. The device volume is miniaturized, and the five filter volumes are mainly divided into two types, 4.8mm 脳 3.2mmx 1.5mm and 9.12mmx4.2mm 脳 1.5mm. these five filters can be widely used in mobile communication terminals, base stations and satellite communications. One of the miniature dual-mode high performance filters is a cooperative project with a national defense research institute. The simulation results fully meet the requirements of the target and are now in the later stage of processing.
【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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