| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna device which can perform fine adjustment electronically in the transmission and reception direction of radio waves and can reduce manufacturing cost.SOLUTION: An array antenna 11 is formed by arranging a plurality of element antennas 11a on a plane. Rough adjustment means 12 is provided so as to be able to rotate the array antenna 11 in the elevation angle direction and the azimuth direction, thus controlling the direction of the array antenna 11. Fine adjustment means 13a is provided so as to be able to control the transmission and reception direction of radio waves, by generating a phase difference between respective element antennas 11a. The fine adjustment means 13a has a phase shifter 25 for adjusting the phase of transmission and reception signals for respective element antennas 11a.</p> |
