Waveguide device, and antenna device including the waveguide device

A waveguide device comprising:

• a first electrically conductive member having a first electrically conductive surface;
• a first waveguide member having an electrically-conductive first waveguide face opposing the first electrically conductive surface, the first waveguide face having a stripe shape extending along the first electrically conductive surface;
• a plurality of first electrically conductive rods on both sides of the first waveguide member, each having a leading end opposing the first electrically conductive surface;
• a second electrically conductive member having a second electrically conductive surface;
• a second waveguide member having an electrically-conductive second waveguide face opposing the second electrically conductive surface, the second waveguide face having a stripe shape extending along the second electrically conductive surface;
• and
• a plurality of second electrically conductive rods on both sides of the second waveguide member, each having a leading end opposing the second electrically conductive surface, wherein,
• a first waveguide gap exists between the first waveguide face and the first electrically conductive surface;
• a second waveguide gap exists between the second waveguide face and the second electrically conductive surface;
• one end of the first waveguide gap is connected to the second waveguide gap;
• at least one of the first waveguide face and the first electrically conductive surface is connected at one end to at least one of the second waveguide face and the second electrically conductive surface;
• and
• at a connecting portion between the one end of the first waveguide gap and the second waveguide gap, the first waveguide face extends in a direction that intersects a plane which is parallel to the second electrically conductive surface.