| 摘要 |
PROBLEM TO BE SOLVED: To realize the simplification and the downsizing of the device structure while improving the receiver sensitivity.SOLUTION: A reception antenna device according to one embodiment includes: waveguide antennas 22-1 to 22-n, each of which receives an electric wave using an open end of the wave guide as an opening surface; receiver circuits 23-1 to 23-n respectively processing input signals input from the waveguide antennas; a cooling plate 12 cooling the receiver circuits; and a vacuum vessel for heat insulation 11 which houses the waveguide antennas and the receiver circuits so as to shield heat intrusion from the exterior. |
