In Memoriam: Olof Dahlsjo

The antenna and radome activities at Ericsson were initially related to the development of military airborne radar. Under Olof Dahlsjö's leadership, they also developed into other types of radar, as well as communications for ground, airplane, and space applications. The activity became world leading with a solid scientific foundation, examples of which are polarization-twisting, satellite antennas for scientific pro grams, and phased arrays. The latter were initially done together with the research group of Prof. Folke Bolinder at Chalmers, and several people from his group later started to work for Olof Dahlsjö.