| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that it is difficult to drive switching of multiple frequency bands, switching of polarization and conical scan in the same driving system, since a large power supply section is required to be arranged in an antenna apparatus shared in multiple frequency bands. <P>SOLUTION: A front feed section 2 having a power supply section 25 of a plurality of frequency bands is provided at the focal portion of a main reflector 1, the front feed section 2 includes X axis drive stages 16-19 for moving the power supply section in the direction of X axis, Y axis drive stages 20-23 for moving the power supply section in the direction of Y axis, and POL rotary drive stages 12-15 for rotating the power supply section around the antenna radio wave axis, and three functions of switching of multiple frequency bands, switching of polarization, and conical scanning can be performed using three drive stages of the X axis drive stage, Y axis drive stage and POL rotary drive stage. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
