摘要
本文对用负阻抗变换电路同小圆锥螺旋天线相结合 ,构成的有源接收天线进行了理论分析 ,并给出了该有源天线稳定工作的条件。结果表明 ,用该方法设计的有源接收天线具有较宽的频带、较高的灵敏度和较小的尺寸。
This paper has made a theoretical analysis of active receiving antenna formed by combining negative impedance converting circuit with small cone helical antenna, and pointed out the stable working conditions for such an active antenna. Practice shows that the active receiving antenna designed by this technique has the advantages of relatively broad frequency band, pretty high sensitivity and rather small size, and is thus a fairly ideal receiving antenna in multifrequency electromagnetic wave logging.
出处
《物探与化探》
CAS
CSCD
1997年第1期58-61,共4页
Geophysical and Geochemical Exploration
基金
国家自然科学基金资助项目的部分成果
关键词
测井
多频电磁波
负阻抗变换
有源接收天线
multifrequency electromagnetic logging, active receiving antenna, negative impedance conversion.
