1) Antenna cover 2) Antenna housing 3) Antenna shelter 4) British invention 5) Dish antenna enclosure 6) Housing 7) Radar antenna covering 8) Radar antenna housing 9) Radar dome 10) Semicircular antenna housing 11) Transparent to radio waves 
A radome (which is a portmanteau of radar and dome) is a structural, weatherproof enclosure that protects a microwave (e.g. radar) antenna. The radome is constructed of material that minimally attenuates the electromagnetic signal transmitted or received by the antenna. In other words, the radome is transparent to radar or radio waves. Radomes pro...
(from the article `telescope`) Some radio telescopes, particularly those designed for operation at very short wavelengths, are placed in protective enclosures called radomes that ...
a cover usually intended for protecting an antenna from the effects of its physical environment without degrading significantly its electrical performance
radar dome
[n] - a housing for a radar antenna
radar dome noun a housing for a radar antenna; transparent to radio waves