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Rugged enclosure for PIM testing in complex multi-band 4G and 5G networks

01 May 2020

Foremost Electronics works closely with its global suppliers to provide bespoke solutions for its customers where standard products do not meet the needs of the end product.

Foremost’s customer AceAxis creates IPR and technology to build, test and analyse the telecoms networks of the future, and develops remote radio head (RRH) and embedded test and measurement technology for the telecoms market. It is changing the way cell-site radio equipment is designed and tested with new technology, products, partnerships and solutions.

AceAxis approached Foremost Electronics requiring a case for a single-board device for Passive Intermodulation (PIM) testing in complex multi-band 4G and 5G networks. The test system analyses the digital bitstream (I/Q data) on the fibre interface between the baseband unit (BBU) and remote radio head (RRH) to measure the effects of PIM.

The enclosure had several very specific requirements. It had to be a compact customer-specific form factor with a maintenance-free conduction cooling concept for high thermal performance without the use of fans. It also required comprehensive EMC shielding and the integration of custom-developed rubber frames to protect the surface of the case, eliminating the use of conventional rubber feet, while ensuring a firm grip – even when the enclosures are stacked or placed on a workbench or table.

Read the full article in the May issue of DPA

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