基于5—20kHz交流激励的U形等离子体天线

内容简介：以5—20kHz交流电源作为等离子天线激励源，建立了一款U形等离子体天线．在详细阐述天线结构的同时并对其部分电特性进行了测量．结果发现，在50一300MHz频率范围内，同工频交流与直流电源激励相比，该天线的噪声电平非常低，与相同构造的金属天线的噪声电平相接近．同时，该等离子体天线具有很好的阻抗带宽特性，且在较宽频带范围内也表现出了良好的增益特性．

Abstract：A U-shape plasma antenna is established by a 5--20 kHz alternating current(AC) source. The structure of the antenna is described, and part of electrical characteristics are measured. Results show that in a frequency range from 50 to 400 MHz, the noise level of 5--20 kHz AC plasma antenna is close to that of a metal antenna, but much lower than that of frequency AC plasma antenna. Besides, the antenna shows good impendance and gain bandwith characteristics.

作者：赵建森, 张芝涛, 王健, 俞哲,

关键词：等离子体天线, 交流激励, 阻抗, 增益,