新型超宽带带通滤波器的综合与设计.pdfVIP

2010 年 1 月 JanuaIγ2010 安徽大学学报(自然科学版) 第 34 卷第 1 期 Journal of Anhui University Natural Science Edition Vol. 34 No. 1 新型超宽带带通滤波器的综合与设计 王道平，吴先良*况晓静 (安徽大学计算智能与信号处理教育部重点实验室，安徽合肥 230039) 摘 要:在无线通信高速发展的今天，超宽带系统的研究具有广阔的应用前景和巨大的市场价值. 论文主要对超宽带系统中的超宽带滤波器进行了深入的综合研究与设计，通过一种新型超宽带滤波器 的综合方法来设计超宽带带通滤波器，并进行了实例仿真.设计的滤波器相对带宽超过110% ，频带宽度 在3. 1 - 10. 6 GHz 之间.软件仿真和理论计算结果一致，并且实例仿真结果显示所设计的滤波器具有低 插入损耗和较高的抑制度等优点. 关键词:超宽带;阶跃阻抗谐振器(SIRs) ;带通滤波器 中图分类号:0451 文献标识码:A 文章编号:1000 -2162(2010)01 -0058 -05 Synthesis and design of a novel type of ultra斗再rideband filter WANG Dao-ping , WU Xian-1iang * , KUANG Xiao-jing (School of Electronic Science and Technology , Anhui University , Hefei 230039 , China) Abstract: Today , with the rapid development of wire1ess communications , the ultra-wideband system has wide app1ication prospect and huge market value. Here , a ultra-wideband filter of ultra-wideband system in an in-depth comprehensive was studied and designed. A novel ultra-wideband bandpass filter was composed by multistage of stepped impedance resonators (SIRs). Its fractiona1 bandwidth was up to 110%. And the passband was from 3.1 to 10.6 GHz. There was a good agreement between the new1y synthesis techniques and the software simu1ation. The results of simu1ation exhibited good characteristics of 10w insertion 10ss , good stopband as well. Key words: ultra-wideband; stepped impedance resonators( SIRs) ; bandpass filter 超宽带滤波器一直以来都倍受科学家们的青睐[1 -4] 文[5 ， 6J 采用基于传输线理论的平行调合阶 跃阻抗线(SIRs) 谐振器结构.论文利用简单的分步参数等效电路模型、传输级联T 函数以及较为简单 的切比雪夫原型来综合设计新型超宽带滤波器.由传输函数容易得到文章所设计的滤波器通带