NDLI: In-situ high field strength testing using a transportable reverberation chamber

Content Provider	IEEE Xplore Digital Library
Author	Leferink, F.
Copyright Year	2008
Description	Author affiliation: Twente Univ., Twente (Leferink, F.)
Abstract	A reverberation chamber can create very high field strength with moderate input power. Existing chambers are making use of a paddle wheel to change the resonant modes in the chamber. In the case of a stepper motor, the field is stable for some time, and this type of reverberation chamber is called mode tuned reverberation chamber. If the paddle wheel is continuously rotating we call it a mode stirred reverberation chamber. The mode stirred is much faster in measuring than the mode tuned, but for some applications where the equipment under test has a long dwell time the mode tuned is preferred. A transportable reverberation chamber with varying angles between wall, floor and ceiling and with vibrating walls has been used for in-situ testing of a large radar antenna system. Inside this Vibrating Intrinsic Reverberation Chamber (VIRC) a diffuse, statistically uniform electromagnetic field is created without the use of a mechanical, rotating, mode stirrer. This chamber results in a better homogeneity and increased field strength compared to conventional mode stirred reverberation chambers. But the VIRC has a disadvantage because it cannot be used for mode tuning. In this paper also a tuneable intrinsic reverberation chamber (TIRC) is presented. The chamber is still made of flexible material and thus transportable, but the modes are changed using either a paddle wheel or by moving the walls in small incremental steps.
Starting Page	379
Ending Page	382
File Size	526608
Page Count	4
File Format	PDF
ISBN	9789810806293
DOI	10.1109/APEMC.2008.4559891
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Asia Pacific EMC Society
Subject Keyword	Polarization Reverberation chamber Electromagnetic interference Wheels Frequency Electromagnetic compatibility Radar antennas Resonance Electromagnetic fields Testing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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