一种基于5—20kHz交流激励的U形等离子体天线
A U-shape plasma antenna based on excitation of 5m20 kHz alternating current power supply
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摘要: 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.
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