Design of a low-frequency miniaturized piezoelectric antenna based on acoustically actuated principle  

作　　者：Yong Zhang Zhong-Ming Yan Tian-Hao Han Shuang-Shuang Zhu Yu Wang Hong-Cheng Zhou 张勇;严仲明;韩天浩;朱双双;王豫;周洪澄(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610000,China;Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education,Chengdu 610000,China)

机构地区：[1]School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610000,China [2]Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education,Chengdu 610000,China

出　　处：《Chinese Physics B》2022年第7期565-572,共8页中国物理B（英文版）

摘　　要：An acoustically actuated piezoelectric antenna is proposed for low frequency(LF)band in this paper.The proposed antenna is theoretically calculated,numerically optimized by the finite element method(FEM),and experimentally analyzed.The measurement results show that the near-field radiation pattern of the piezoelectric antenna is similar to that of the electric dipole antenna.The radiation efficiency of the piezoelectric antenna is 3-4 orders of magnitude higher than that of electrically small antenna(ESA),with their sizes being the same size,and the maximum transmission distance obtained experimentally is 100 cm,which can be improved by increasing the input power.In addition,the gain,directivity,and quality factor of piezoelectric antenna are also analyzed.In this paper,traditional antenna parameters are creatively used to analyze the performance of piezoelectric antenna.The research conclusions can provide reliable theoretical basis for realizing LF antenna miniaturization.

关 键 词：piezoelectric low frequency antenna resonance frequency radiation quality factor antenna miniaturization 

分 类 号：TN820[电子电信—信息与通信工程]