Anechoic Chambers

Anechoic Chambers

The anechoic chambers are built up as modular construction. Due to individual modules, any size of the chamber can be manufactured. Big anechoic chambers may require an outer supporting structure or alternatively, the shielding material can be attached directly to the building. The absorbers are fixed to rails bars or wooden base construction which is inserted into the shielding modules. According to the required type of absorber, they can be screwed (ferrite tiles), glued (ferrite tiles and pyramidal absorbers) or fixed by Velcro tape (pyramidal absorbers).
The kind of the absorbers and the dimensions of the hall are the key points for the performance of the hall. Together with the customer, we will find the optimum solution in order to reach a favorable price-efficiency-ratio. The chambers are completely equipped with electrical installation and can also be handed over ready for operation with turntable and antennas.

An anechoic chamber (an-echoic meaning “non-reflective, non-echoing, echo-free”) is a room designed to completely absorb reflections of either sound or electromagnetic waves. They are also often isolated from waves entering from their surroundings. This combination means that a person or detector exclusively hears direct sounds (no reverberant sounds), in effect simulating being inside an infinitely large room.

Anechoic chambers were initially exclusively used to refer to acoustic anechoic chambers. Recently, the term has been extended to RF anechoic chambers, which eliminate reflection and external noise caused by electromagnetic waves. Anechoic chambers range from small compartments the size of household microwave ovens to ones as large as aircraft hangars. The size of the chamber depends on the size of the objects and frequency ranges being tested.