Analysis of Tapered Acoustical Directional Couplers电子学报：英文版论文
【题名】：Analysis of Tapered Acoustical Directional Couplers电子学报：英文版论文(Analysis of Tapered Acoustical Directional CouplersDianZiXueBao：YingWenBanLunWen) 【关键词】：声定向耦合器 简正波理论 转移矩阵 频带宽度 【keywords】：ShengDingXiangZuoHeQi JianZhengBoLiLun ZhuanYiJuZhen PinDaiKuanDu 【作者】：CHENMing,TANGTiantong,      【来源】： 知识词典 【期刊名称】：电子学报：英文版(DianZiXueBao：YingWenBan) 【国际标准刊号】：1022-4653        【国内统一刊号】： 【作者单位】：[1]SchoolofOpto-ElectronicsScienceandTechnology,ChongqinUniversityofPostsandTelecommunications,Chongqin400064,China [2]SchoolofElectronicsScienceandTechnology,Xi＇anJiaotongUniversity,Xi＇an710049,China([1]SchoolofOpto-ElectronicsScienceandTechnology,ChongqinUniversityofPostsandTelecommunications,Chongqin400064,China [2]SchoolofElectronicsScienceandTechnology,Xi＇anJiaotongUniversity,Xi＇an710049,China) 【分类号】：TN912.3      【页码】：-349-351      【出版年】：2005.2 【下载地址】：下载pdf全文         The linearly tapered acoustic directional coupler is analyzed. Its size parameters are given using the local normal mode theory as usually done for tapered optical directional couplers, and modeling of the characteristic for this coupler is performed, with help of the transfer matrix method based on coupled wave theory. The modeling results show that bandwidth of the coupler is about 4MHz, its fiat pass about 2MHz, and better sidelobe suppression than acoustic directional coupler with constant gap is obtained.
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