| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-beam antenna that can easily reduce a side lobe or improve a gain. SOLUTION: Auxiliary antenna elements 5a and 5b are arranged on the right/left of four antenna elements 3a-3d connected to a battler matrix feeding circuit 2. Phases are delayed from power distributors 25a and 25b by 180 degrees by delay lines 26a and 26b and power is distributed to the auxiliary antenna elements 5a and 5b. The phase difference of all the antenna elements 3a-3d, 5a and 5b can be adjusted. Since the vibration power distribution of the antenna elements 3a-3d, 5a and 5n can be given by changing the distribution ratio of the power distributors 25a and 25b, a side lobe can be reduced and a gain can be improved. |
