GTEM - Reverberation Chambers

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Reverberation Chambers
REVERBERATION TENTS
Shielded Chambers
STRIPLINE FOR IMMUNITY TESTS Mod. EMC-STPL
Stirrer to reduce inhomogeneous (standing waves) in reverberation chamber

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GTEM – REVERBERATION CHAMBERS

Reverberation Chamber Description from Wikipedia:

An electromagnetic reverberation chamber (also known as a reverb chamber (RVC) or mode-stirred chamber (MSC)) is an environment for electromagnetic compatibility (EMC) testing and other electromagnetic investigations.
Electromagnetic reverberation chambers have been introduced first by H.A. Mendes in 1968.[1] A reverberation chamber is screened room with a minimum of absorption of electromagnetic energy.
Due to the low absorption very high field strength can be achieved with moderate input power. A reverberation chamber is a cavity resonator with a high Q factor. Thus, the spatial distribution of the electrical and magnetic field strengths is strongly inhomogeneous (standing waves). To reduce this inhomogeneity, one or more tuners (stirrers) are used. A tuner is a construction with large metallic reflectors that can be moved to different orientations in order to achieve different boundary conditions. The Lowest Usable Frequency (LUF) of a reverberation chamber depends on the size of the chamber and the design of the tuner. Small chambers have a higher LUF than large chambers. The concept of a reverberation chambers is comparable to a microwave oven.

Reverberation Chambers

Model	Lowest useful frequency	External Dimensions	Usable test volume	Stirrer system	Note:
80RVC	80MHz-18GHz	L12.5 x W10.5 x H6m	L7,0 x W7,0 x H4,5m	Z fold 2 rotary stirrers	Hot galvanized steel panels
100RVC	100MHz-18GHz	L9.00 x W7.95 x H6m	L4x W4 x H4,5m	Z-fold duo-pole rotating vertical stirrer system	Hot galvanized steel panels
200RVC	200MHz-18GHz	L5.10 x W4 x H3m	L2.4 x W2.2 x H1.25 m	Z-fold duo-pole rotating vertical stirrer system	Hot galvanized steel panels
400RVC	400MHz-18GHz	L2.50xW2xH2m	L0.8xW0.8xH0.8m	Z-fold duo-pole rotating vertical stirrer system	Aluminum panels
1G-RVC	1GHz-18GHz	L0.80 x W0.90 x H1.5	L0.5 x W0.5 x H0.5m	A-symmetric stirrer system	Aluminum panels. (Rack on trolley)

Reverberation Tents

	Lowest frequency usable	External Dimensions	Usable test volume	Vibration system	Note:
700VRC	700MHz-18GHz	L1.2 x W1.2 xH1.2m	L0.5 x W0.5 x H0.5m	VRC, Vibrations of the 5 walls	Metalized fabric
400VRC	400MHz-18GHz	L3 x W2 x H2m	L0.8 x W0.80 x H0.8 m	VRC, Vibrations of 5 walls	Metalized fabric
400VRC -HY	400MHz-18GHz	L2.50 x W2 x H2m	L0.8 x W0.80 x H0.8 m	VRC, Vibrations of 3 walls	Hybrid: Metalized fabric + metal base and front door metal panel