| 摘要 |
PROBLEM TO BE SOLVED: To reduce the manufacturing cost and the installation cost of a radio wave repeater. SOLUTION: The radio wave repeater 8A comprises two antennas 10 and 20 resonating in a common frequency band wherein these antennas 10 and 20 are connected electrically and arranged such that a radio wave received by one antenna is transmitted from the other antenna while altering the direction by about 90 deg.. |
