Frequency driven scanning characteristic of a pinna model inspired from the Brown Big-eared bat(Plecotus auritus)  

作　　者：WANG Puxun ZHUANG Qiao ZHANG Zhiwei 

机构地区：[1]School of Information Science and Engineering, Shandong University Jinan 250100 [2]Institute of Acoustics, Chinese Academy of Sciences Beijing 100190 [3]School of Physics, Shandong University Jinan 250100

出　　处：《Chinese Journal of Acoustics》2011年第2期181-190,共10页声学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(10774092);the National Found for Fostering Talents of Basic Science of China(J0730318);the Postdoctoral Science Foundation of China(20090450599).

摘　　要：According to the parameters of a Brown Big-eared bat＇s pinna,a simple obliquely truncated bat ear model that made by line and plane was designed,which was numerically simulated with finite element method.The change of far-field directivity was analyzed in elevation and azimuth as the frequency increased.The results show that,compared with the pinna of the Brown big-eared bat,the present model has the advantages in wider bandwidth of frequency driven scanning,better directivity in azimuth and larger angle scales in elevation. In addition,a wireless positioning method based on single base station could be achieved by using a frequency driven scanning antenna.According to the parameters of a Brown Big-eared bat＇s pinna,a simple obliquely truncated bat ear model that made by line and plane was designed,which was numerically simulated with finite element method.The change of far-field directivity was analyzed in elevation and azimuth as the frequency increased.The results show that,compared with the pinna of the Brown big-eared bat,the present model has the advantages in wider bandwidth of frequency driven scanning,better directivity in azimuth and larger angle scales in elevation. In addition,a wireless positioning method based on single base station could be achieved by using a frequency driven scanning antenna.

分 类 号：TN873.93[电子电信—信息与通信工程] TP334.2[自动化与计算机技术—计算机系统结构]