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

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 is similar to the electric dipole antenna. The radiation efficiency of piezoelectric antenna is 3-4 orders of magnitude higher than that of electrically small antenna (ESA) with the same size, and the maximum transmission distance obtained from the experiment is 100cm, which can be improved by increasing the input power. In addition, the gain, directivity and quality factor of piezoelectric antenna are also analyzed. The manuscript creatively uses traditional antenna parameters to analyze the performance of piezoelectric antenna. The research conclusions can provide reliable theoretical basis for the design of LF antenna miniaturization.

High radiation performance and multi-band acoustically driven piezoelectric antenna based on energy trapping theory

“…As shown in figure 6, the experimental platforms are established to evaluate the performance of the proposed prototypes. Figure 6(a) is the test platform for the radiation distance, radiation pattern and radiation magnetic field of the prototype and the test principle is similar to the [3]. Figure 6(b) is the Sparameter test platform, which consists of a vector network analyzer (CEYEAR 3674B) and coaxial cable.…”

“…The very low frequency (VLF) and low frequency (LF) communication has been widely used in ionosphere remote sensing, radar tracking, transcontinental communication and underwater communication because of its low working frequency, high penetrability and low attenuation rate [1][2][3][4][5]. * Author to whom any correspondence should be addressed.…”

Design of multi-band and high radiation intensity piezoelectric antenna based on external circuit

“…Acoustic strain powered antenna is based on the dynamic coupling between acoustic wave and electromagnetic wave inside ferroelectric or ferromagnetic materials to realize the conversion between mechanical energy and electromagnetic energy, and the electromagnetic radiation is generated. It is divided into piezoelectric antenna and magnetoelectric antenna according to different working principles [8][9][10][11]. Acoustic strain powered antenna has the advantages of small volume, easy integration and simple impedance matching network.…”