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absorber-lined chamber (ALC)

Anechoic chambers, Absorber-Lined Chambers (ALC), are shielded rooms equipped with high-frequency absorbers

in which RF oscillations are totally absorbed. To achieve such total absorption

, anechoic chambersare equipped with damping and absorption devices that completely absorb electromagnetic energy

. Anechoic

chamber, photo: University of Adelaide

chamber, photo: University of Adelaide

Such anechoic chambers, also known as compact pyramid chambers (CPCs) because of their pyramid-shaped absorbers, are used to measure spurious emissions and immunity. Antennas, their characteristics and radiation patterns can also be measured in them, as well as RF components, microwave ovens and other RF and microwave equipment and their electromagnetic compatibility (EMC). Since the room has perfect RF tightness, the test results are not affected by any external RF signals, but only by those emitted by the equipment under test.

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Englisch: absorber-lined chamber - ALC
Updated at: 02.09.2014
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