摘要
近十年来,一种新型的高电磁阻抗表面得到迅速发展。这种高电磁阻抗表面实际上是一种新的电磁结构——光子带隙晶体结构。在频率禁带,这种结构的表面具有很高的电磁阻抗。利用这种特性,可以构建一种平面型行波管。这种行波管采用曲折线作互作用慢波电路。为了减小电磁波传输损耗,曲折线放置在高电磁阻抗表面上。本文对高电磁阻抗表面的特性和这种平面型行波管的工作原理进行了讨论。
A new type of high-impedance electromagnetic surface has been developed in recent years. This new electromagnetic surface is a type of new metallic electromagnetic structure with high impedance on its surface in the forbidden frequency band. The characteristics of this high impedance electromagnetic surface are discussed in this paper. Its application in the new plane traveling wave tube is also discussed. This new plane traveling wave tube uses meander line as the slow wave interaction circuit and putting on the high-impedance electromagnetic surface instead of using the ordinary ceramic substrate to reduce the insert loses.
出处
《真空电子技术》
2008年第5期29-31,共3页
Vacuum Electronics
