Journal of Terahertz Science and Electronic Information Technology , Volume. 18, Issue 5, 847(2020)
Miniaturized low frequency transmitting antenna based on vibratory electret
Low-frequency Electro-Magnetic(EM) waves have low transmission loss, but the traditional resonant antennas have large size at these frequencies which results in difficulties in engineering application. Convection current can generate time-varying electromagnetic fields, and the operational frequency is independent of the antenna size, which gives a new method to produce low-frequency EM radiation. In this paper, the electromagnetic fields and the equivalent model of the vibratory electret are studied through theoretical calculation and simulations. Some sound explorations are conducted to realize low frequency miniature antenna based on the vibratory electret. The research results show that the vibratory electret shares the same electromagnetic characteristics with the current element.
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ZHUANG Kaijie1, GENG Junping*1, MA Bo2, WU Haobo1, XU Yunxiao1, HAN Jiawei1, WANG Kun1, JIN Ronghong1, LIANG Xianling1. Miniaturized low frequency transmitting antenna based on vibratory electret[J]. Journal of Terahertz Science and Electronic Information Technology , 2020, 18(5): 847
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Received: Nov. 27, 2018
Accepted: --
Published Online: Jan. 22, 2021
The Author Email: Junping*1 GENG (gengjunp@sjtu.edu.cn)