| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device, used for satellite installation, capable of achieving high sensitivity of a reception system without need of an insulated container and cooling means for a reception circuit.SOLUTION: A reception filter 4 extracts a predetermined frequency band component from a signal received by an antenna and acquires a reception signal. An LNA 6 low noise-amplifies the reception signal output from the reception filter 4. The reception filter 4 is formed from super conduction material which is kept in a super conduction state by an extremely low space in space, and is disposed at the extremely low space in the space. |
