- Rosenberger is an innovative global leader in RF technology with an international presence. The Rosenberger name stands for both quality and cutting edge technology in the field of RF connectors, low frequency & high frequency cable assemblies, RF test and measurement devices, automotive products, fiber optic products, and custom copper assemblies. Rosenberger, headquartered in Germany, maintains sales and manufacturing facilities around the globe. As a leader in the industry, they provide a wide range of standardized and customized connectivity solutions to a variety of customers across multiple industry segments.