| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for a connection cable between an outdoor antenna and a tuner by applying frequency conversion to a reception signal of a satellite broadcast reception antenna, sending its output signal as a radio wave and using a receiver and the tuner receiving the radio wave. SOLUTION: A reception signal of a satellite broadcast reception antenna 1 installed outdoor is converted into a frequency of a sub microwave band by a converter 4. A transmitter 10 sends an output signal after frequency conversion as a radio wave. A directivity antenna is suitable for a transmission antenna in order to prevent radiation in undesired directions. A receiver 20 is installed indoor and receives the radio wave from the transmitter 10. A directivity antenna is suitable for a reception antenna 21 in order to prevent invasion in undesired directions. Thus, troublesome drawing and connection of coaxial cables is avoided. The transmitter 10 may be assembled in the converter 4 and the receiver 20 may be mounted in a BS tuner 5, respectively. |
