环形天线是将一根金属导线绕成一定形状，如圆形、方形、三角形等，以导体两端作为输出端的结构。绕制多圈（如螺旋状或重叠绕制）的称为多圈环天线。
... active antenna有源天线；发射天线 loop antenna回路天线；环形天线；框形天线 omnidirectional antenna全向天线 ...
基于4个网页-相关网页
爱福特环形天线 Alford loop
阿尔福德环形天线 alford loop antenna
环形天线测向仪 loop direction finder
固定环形天线 fixed-coil antenna ; fixed loop antenna ; [航] fixed-loop aerial
环形天线电感 loop inductance
分隔式环形天线测向仪 spaced-loop direction finder
环形天线接收机 loop receiver
旋转环形天线 rotary loop antenna ; rotating loop ; rotating-loop antenna
多波束环形天线 multiple-beam torus antenna ; antenna multiple-beam torus
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最后举例计算了9频道环形天线的尺寸。
As an example, the size of a loop antenna for 9th TV channel was computed.
下一页水晶胶带，并开始翻身，使环形天线牢固地安装。
Next take crystal adhesive tape and start to roll over and over to make the loop antenna firmly fitted.
本支叙述了环形天线的机理及特性参数，并给出两种应用实例。
The principle and parameters of circinate antenna are described and two application examples are explained in this paper.
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