Not all chambers offer the same performance or quality. All reverberation, fully and semi-anechoic chambers provided by AR RF/Microwave Instrumentation through Comtest Engineering BV offer customers the highest level of performance, quality and support. There are several outstanding advantages of Comtest chambers. One unique advantage is the Pan Shield design. The approach used by Comtest allows for premium performance and seamless construction over older designs techniques, such as wood core shielded chambers. The baseline performance of the pan-type shield is far more reliable, and exceeds 100 dB level of attenuation up to 40 GHz without any modifications or add-ons. This provides a great testing environment for your testing needs
Another important component of the performance of an anechoic chamber is the RF absorber. Comtest’s closed cell, non-hygroscopic, carbon-loaded polystyrene absorbers are specifically designed to inhibit the reflection of electromagnetic radiation, which makes them suitable for use in EMC test laboratories as well as antenna chamber applications. Naturally, the absorption characteristics can be altered by using different thicknesses and arrangements. Comtest’s absorber products are divided into two main categories: Hybrid & Microwave. Hybrid chamber solutions make use of ferrite tiles in combination with the HT series absorbers, and the microwave absorber line is typically used for research related to antenna pattern measurement.
Although AR offers predefined chamber designs, chambers are fully customizable and offer a complete selection of accessories. Turntables, masts, and a wide array of antennas are part of the basic offering, whilst other components such as fiberoptic converters, shielded RF penetrations, specialty bulkhead connectors, CCTV, and projection systems are also available.
With the addition of chambers, customers can rely on AR RF/Microwave Instrumentation to provide a total EMC solution; chambers, instrumentation (including systems), as well as the highest level of service and technical support.
Video 1: Comtest employs several layers to deliver high performance from their anechoic chambers.
Video 2: This video shows the layers that make up a non-hybrid absorber installation.
Video 3: This video shows the assembly that makes up a corner on a Comtest pan type shield.
It depicts two adjacent wall panels and a floor panel being bolted together, compressing a gasket and providing shielding effectiveness. It also provides an example of how connector panels are integrated onto the shield.