| 摘要 |
PROBLEM TO BE SOLVED: To provide a waveguide slot antenna capable of reducing a signal level of an unnecessary lobe even in the case that a scanning angle of a beam is changed.SOLUTION: A plurality of waveguide slot antennas on whose surface a plurality of slots are formed are provided. The plurality of waveguide slot antennas are continuously arranged in a lamination direction via a choke structure, and comprises: a waveguide slot antenna whose slot pattern is a first pattern; and a waveguide slot antenna that is line-symmetrical to the first pattern in the lamination direction of the waveguide slot antennas and whose slot pattern is a second pattern. The waveguide slot antenna of the first pattern and the waveguide slot antenna of the second pattern are arranged irregularly, and powers in reverse phases to each other are supplied to the respective waveguide slot antennas of the first and second patterns. |
