| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an array antenna such that array intervals of sub array antennas can be made smaller than an external shape size needed for a wide wall surface of a rectangular waveguide connected to a feed part. <P>SOLUTION: A plurality of sub array antennas 3 are arranged so as to be shifted alternately in a length direction so that feed parts 6 provided substantially in the center of lengthwise lengths of respective feed lines 5 do not interfere with feed parts of feed lines of other sub array antennas. Consequently, array intervals of the sub array antennas 3 can be an approximately 0.6 wavelength less than a 0.9 wavelength as the external shape size needed for the wide wall surface of the rectangular waveguide connected to the feed parts. <P>COPYRIGHT: (C)2013,JPO&INPIT |
