A dual frequency OMT in the Ku band for TT&C applications - Rebollar, JM; Esteban, J; De Frutos, J (Ieee Antennas And Propagation Society International Symposium, 1998 Digest - Antennas: Gateways To The Global Network - Held In Conjunction With: Usnc/Ursi National Radio Science Meeting, 1998)