Properties of DC-biased Plasma Antenna

摘要：

Plasma antenna is a general terms representing using plasma as a conductive medium to transmit or reflect signals. It has unique properties like low RCS,tunable impedance,and instant on-off capability. Previous plasma antenna uses 500 MHz 100W RF power to generate a plasma column,which is limited in energy efficiency and bandwidth.We developed DC-biased plasma antenna,which has no operation frequency upper limit and low sustaining power. Signal is coupled to the plasma antenna via capacitive coupling. Plasma antennas of different length were studied,together with variant gas filled. Positive gain can be achieved at frequencies above the plasma characteristics frequency. Some frequencies shows resonance behavior when plasma is present. Impedance shifts slightly with the DC current. Radiation pattern is less uniform than metal antenna. Gain is related to signal power.

作者: Max Chung Wen-Shah Chen Yen-Hao Yu Zong Yao Liou

作者单位: Dept.of Electronics Engineering,Southern Taiwan University No.1,Nan Tai Street,Yung Kang,Tainan,Taiwan

会议类型: 国际会议

会议名称: 2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)

会议地点: 南京

会议语种:英文

页码: 1118-1120

在线出版日期: 2008-04-21（万方平台首次上网日期，不代表论文的发表时间）