Kathrein Group is a privately owned German company founded in 1919 and headquartered in Rosenheim, Germany. The company specializes in the development and production of connectivity infrastructure, including antennas, filters, and transmission lines. Kathrein has a global presence with over 1,500 employees and annual revenues of less than $1 million as of 2022. The company is known for its innovative products and solutions, and its commitment to quality and customer satisfaction.