Progress on Very/Ultra Low Frequency Mechanical Antennas

Shaolong Yang,1

Jianchun Xu,1*Email

Menghao Guo, 1

Bokun Zhang,2

Chuwen Lan,3

Haihong Li1 

Ke Bi1*Email

1School of Science, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.

2International School, Beijing University of Posts and Telecommunications, Beijing 100876, China.

3Beijing University of Posts and Telecommunications Research Institute, Shenzhen 518057, China.

Abstract

Mechanical antennas have attracted wide attention due to their outstanding properties of ultra small size and low power in existing long wave communications. Here, a review of progress on mechanical antennas used in very low frequency (VLF: 3 - 30 kHz) and ultra low frequency (ULF: 0.3 - 3 kHz) is presented. The topic of focus is on the performance analysis of permanent magnet-based and piezoelectric mechanical antennas, including both radiation mechanism and signal modulation. Moreover, basic mechanical antennas are generally classified in detail, and the radiation performance of various schemes is compared. It concludes the up-to-date progress on the mechanical antennas for providing a source of inspiration towards the future better outcome of designs and applications.

Progress on Very/Ultra Low Frequency Mechanical Antennas