中国物理B ›› 2022, Vol. 31 ›› Issue (7): 77702-077702.doi: 10.1088/1674-1056/ac6495

• • 上一篇    下一篇

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

Yong Zhang(张勇)1, Zhong-Ming Yan(严仲明)1, Tian-Hao Han(韩天浩)1, Shuang-Shuang Zhu(朱双双)1, Yu Wang(王豫)1,2, and Hong-Cheng Zhou(周洪澄)1,†   

  1. 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
  • 收稿日期:2022-01-04 修回日期:2022-02-17 接受日期:2022-04-06 出版日期:2022-06-09 发布日期:2022-06-21
  • 通讯作者: Hong-Cheng Zhou E-mail:zhouhc@home.swjtu.edu.cn

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

Yong Zhang(张勇)1, Zhong-Ming Yan(严仲明)1, Tian-Hao Han(韩天浩)1, Shuang-Shuang Zhu(朱双双)1, Yu Wang(王豫)1,2, and Hong-Cheng Zhou(周洪澄)1,†   

  1. 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
  • Received:2022-01-04 Revised:2022-02-17 Accepted:2022-04-06 Online:2022-06-09 Published:2022-06-21
  • Contact: Hong-Cheng Zhou E-mail:zhouhc@home.swjtu.edu.cn

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

Abstract: 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.

Key words: piezoelectric low frequency antenna, resonance frequency, radiation quality factor, antenna miniaturization

中图分类号:  (Acoustoelectric effects and surface acoustic waves (SAW) in piezoelectrics)

  • 77.65.Dq
77.65.-j (Piezoelectricity and electromechanical effects) 84.40.Ba (Antennas: theory, components and accessories) 92.60.Ta (Electromagnetic wave propagation)