Dissertation > Excellent graduate degree dissertation topics show

Study and Design of UWB Bandpass Filter

Author: FanLi
Tutor: ZhaoYongJiu
School: Xi'an University of Electronic Science and Technology
Course: Measuring Technology and Instruments
Keywords: Ultra-wideband filter Stepped impedance resonators Parallel coupled line Transmission zeros Signal interference
CLC: TN713.5
Type: Master's thesis
Year: 2011
Downloads: 289
Quote: 1
Read: Download Dissertation

Abstract

As one of the indispensable components of the communication system, the filter has played a pivotal role in the entire radio system, many of the important issues of the design process. With the continuous development of the information society, the communication system requirements are also getting higher and higher, almost demanding the design specifications of the filter. High performance, miniaturization, low cost and good integration have become a problem to be solved. Therefore, designed to meet the requirements of the filter has become the current hot spots. This paper focus on the ultra-wideband bandpass filter design theory and methodology, first summarize the existing ultra-wideband filter design methods, analyzed and designed several different types of ultra-wideband filters, these filters small size, compact structure, excellent performance characteristics. Stepped impedance resonator of multi-model applications, starting from the structural parameters, first stepped impedance resonator structure parameters and the change in resonant frequency relationship, followed by analysis of the transmission characteristics of the parallel coupled lines, based on stepped impedance resonator design of an ultra-wide-band filter, the processed measured to verify the correctness of the design method. Parallel short parallel coupled line impedance parameters, pointed out that the filter transmission zero is generated by the parallel short parallel coupled line transmission zero location depends on the coupling strength of the coupling line. According to this theory the design of an ultra-broadband filter, dual parallel coupled lines to three parallel coupled lines, increasing the degree of coupling, expand the bandwidth of the filter. The filter design method based on signal interference techniques (Signal-Interference Techniques), two ultra-broadband filter based on this technology design debugging. First, the analysis of the resonant characteristics of the circle of the ring resonator, and studied the relationship between the filter bandwidth and structure parameters. A relative bandwidth of 50% of the band-pass filter as a basis for design. In addition, the study of the parallel coupled line short-circuited at both ends of the transmission parameters, and parallel with a transmission line, an ultra-wideband bandpass filter design, analysis of the distribution pattern and the physical parameters of the pole-zero filter between the relationship between various physical parameters of the filter change, the scattering parameters. Experiments to verify the correctness of the results of the design. This paper summarizes the work about to begin the next stage of work is put forward.

Related Dissertations

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Filtering techniques,the filter > Band pass, band stop filter
© 2012 www.DissertationTopic.Net Mobile