which they won the 1978 Nobel Prize in Physics. Another more recent horn-reflector design is the cass-horn, which is a combination of a horn with a cassegrain parabolic antenna using two reflectors. See also Holmdel Horn Antenna Microwave Radiometer (Juno) (uses 1 horn antenna for Jupiter observations) External links Horn Antennas Antenna-Theory.com on Albert LaFrance [long-lines.net] website U. S. patent no. 2416675 Horn antenna system, filed November 26, 1941, Alfred C. Beck, Harold T. Friis on Google Patents References Telecommunications equipment Radio frequency antenna types Antennas (radio) Bangladeshi inventions Indian inventions