基于多模谐振器的超宽带滤波器的设计与仿真文档.doc

摘要 在2002年2月，美国联邦通信委员会（Federal Communications Committee, FCC）3.1GHz-10.6GHz这一频带作为超宽带通信所用，这一举措对超宽带技术的发展起到了积极的推动作用，并在学术界和工业领域引起了广泛的研究兴趣。超宽带技术解决了困扰传统无线技术多年的有关传播方面的重大难题，它具有对衰落不敏感、发射信号低、低截获能力、系统复杂度低、能提供数厘米的定位精度等优点。UWB）技术、奇偶模分析法、多模谐振器 ABSTRACT In 2002 February, the United States Federal Communications Commission (Federal Communications Committee, FCC 3.1GHz-10.6GHz) approved the band as the UWB communication, a move that a positive role to the development of UWB technology, and has attracted much interest in the academic and industrial fields. Ultra wideband technology to solve the problems of traditional wireless technology for many years about the spread of the problem, it is insensitivity to channel fading, low power density, low interception capacity, low complexity of the system, provided a few centimeters accuracy. Ultra-wideband filter is a very important part in UWB communication system. According to the technical specification of FCC to design a good in-band and out-of-band characteristics of UWB filter is a big challenge. Ultra-wideband filter microstrip line attention based on. In microwave circuits, microstrip transmission line is one of the most widely used, because of its design and processing of easy processing, low cost, small size, can be mass production, and is widely used in power splitter, filters and antennas, microwave devices. At present people for UWB filter based on microstrip lines of research. Put forward some design methods, for example, the design method based on multi-mode resonator based on composite cracking ring resonator method etc.. This paper mainly aims at the research on UWB filter based on multi-mode resonator. Exploration of the multi-mode resonator a stub loaded. Simulation results show that, the resonator has six modes. On this basis, construct a UWB filter. The filter can cover the 3.1~11.0GHz frequency range; through echo loss band for -12dB; inhibition with external 14GHz can reach -60dB. Key Words: Filter，ultra wideband (UWB)