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一种基于5—20 kHz交流激励的U形等离子体天线

物理学报, 2012, 61(19): 195201.
DOI: 10.7498/aps.61.195201
CSTR: 32037.14.aps.61.195201

A U-shape plasma antenna based on excitation of 5—20 kHz alternating current power supply

Acta Phys. Sin., 2012, 61(19): 195201.
DOI: 10.7498/aps.61.195201
CSTR: 32037.14.aps.61.195201
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  • 摘要

    以5—20 kHz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—300 MHz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.

     

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