On the leakage radiation from a circumferentially-slotted cylinder and its application to the EMI produced by TEM-coaxial rotary joints

被引:12
作者
Knop, CM [1 ]
Libelo, LF [1 ]
机构
[1] USA, RES LAB, ADELPHI, MD 20817 USA
关键词
D O I
10.1109/15.477344
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The amount of leakage radiation, as well as the radiation pattern and its gain, produced by a complete-360 degrees circumferential-narrow gap cut in a coaxial cable carrying a TEM mode is determined. Leakage levels for such a typical cable of approximately 26% are predicted to occur for gaps as small as about 0.0074 lambda. The former is substantiated by measurement on a 7/8 '' diameter coaxial cable of 50-Omega characteristic impedance operating at 2 GHz. Estimates of the EMI levels produced by typical coaxial choked-rotary joints (where the chokes significantly decrease the gap leakage) operating at high power levels are then given.
引用
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页码:583 / 589
页数:7
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