Field-replaceable 40GHz SMK connectors

Citation

(2007), "Field-replaceable 40GHz SMK connectors", Aircraft Engineering and Aerospace Technology, Vol. 79 No. 1. https://doi.org/10.1108/aeat.2007.12779aad.002

Field-replaceable 40GHz SMK connectors

Field-replaceable 40GHz SMK connectors

A range of high performance SMK connectors, specifically designed for demanding applications, is now available throughout Europe from Vitelec Electronics. The range includes hermetically sealed, field replaceable components and is said to be ideally suited to aerospace applications.

Claiming to deliver superior performance up to 40GHz, for applications requiring high- frequency transmission, Johnson SMK 50ohm connectors are reported to be easy to install and replace in the field. A selection of the SMK range is available with a hermetic seal – mounted into the circuit module wall – enabling connectors to be removed and replaced without destroying the hermeticity of the circuit housing.

Similar to a SMA interface, SMK connectors feature a smaller internal body diameter (2.92mm) and air dielectric to provide a higher cut-off frequency. The SMK plug interface employs more precise dimensions than an SMA and uses a shorter snub nose male pin, ensuring the connector bodies align before the contacts engage. Precision manufacturing allows superior electrical performance up to 40GHz, while the SMK's female contacts have a unique, three-slot construction which enables connectivity by creating a more rugged device while reducing the chance of intermittent connections.

Claiming precise assembly tooling to ensure superior, repeatable contact and support bead location on cabled connectors, the range delivers connector mating interface per MIL- STD-348 and control for consistent electrical performance. With a plug connector VSWR of 1.20 Max to 40GHz, a 12in. SMK plug-to-plug cable assembly performs above 1.35VSWR to 40GHz.

Details available from: Vitelec Electronics Ltd, Tel: +44 (0)1384 843420.