The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Bookmark and Share
Research on Shielding Effectiveness Measurements for Small Enclosure in Reverberation Chamber
Pages: 1158-1163
Year: Issue:  11
Journal: Transactions of Beijing Institute of Technology

Keyword:  reverberation chamberfrequency stirringnested reverberation chambershielding effectivenesssmall enclosure;
Abstract: In order to solve the problem that the shielding effectiveness testing is difficult in a small cavity,the test error caused by antenna efficiency in nested frequency-stirred reverberation chamber(RC)method was corrected,and the response of a small monopole mounted on the inside wall was deduced with induction electromotive force method,getting a conclusion that a wall-mounted monopole could be used to measure the power in RC.Based on the conclusion and the improved test method,the SE of an electrical module enclosure was measured.The measured S21 parameters explain that frequency stirring is effective on changing the electromagnetic field,and the mean value of S21 indicates that energy is uneven and oscillating with frequency change in the low frequency band.The results show that the SE value gradually weakened from 20 dB to 5dB when the cavity is in over mode with the frequency rising from 3GHz to 13 GHz.The results are also independent of the antenna location.However,if the antenna efficiency is ignored,the test error can be up to 10 dB.Thus,more attention must be paid in test.
Related Articles
No related articles found