| 摘要 |
PROBLEM TO BE SOLVED: To suppress an unnecessary side lobe level generated when electric beam tilt angle control is performed by conventional technique. SOLUTION: An array antenna 10 having a plurality of radiation elements 20 arrayed in a vertical plane at predetermined intervals is characterized in that the radiation elements 20 are grouped by predetermined numbers of adjacent radiation elements to perform control for electrically varying tilt angles of main beams by phase shifters 11 provided by the groups and control for mechanically tilting the radiation elements of the respective groups in group units by a mechanical tilt BOX 30. COPYRIGHT: (C)2008,JPO&INPIT
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