一种基于5-20 kHz交流激励的U形等离子体天线  

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

作　　者：赵建森[1] 张芝涛[1,2] 王健[2] 俞哲[1] 

机构地区：[1]大连海事大学轮机工程学院,大连116026 [2]大连海事大学物理系,大连116026

出　　处：《物理学报》2012年第19期301-307,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50877005)资助的课题~~

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—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.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.

关 键 词：等离子体天线 交流激励 阻抗 增益 

分 类 号：TN820[电子电信—信息与通信工程]