Waveguide antenna and radar apparatus including the same

A radar apparatus, comprising:

• an antenna module that is capable of being mounted on a side and rear corner of a vehicle and includes:
• an integrated circuit;
• and
• a waveguide antenna including:
• a base part having an accommodation portion that accommodates the integrated circuit and configured to separate an output of the integrated circuit into a first electromagnetic wave and a second electromagnetic wave having different frequencies from each other;
• a waveguide part provided on the base part and having a first waveguide and a second waveguide that guide the first electromagnetic wave and the second electromagnetic wave in different directions;
• and a cover part provided to cover at least a part of the waveguide part and having a first directional surface to which the first electromagnetic wave is radiated and a second directional surface to which the second electromagnetic wave is radiated,
• a control module configured to generate information about objects around the vehicle based on signals detected by the antenna module;
• and
• a power management module configured to supply power to at least one of the antenna module and the control module,
• wherein the waveguide antenna is configured such that the first directional surface faces the rear of the vehicle and the second directional surface faces the side of the vehicle,
• wherein the waveguide part further includes:
• a main body in which the first waveguide and the second waveguide are formed, and
• wherein a transmission guide portion for the first waveguide and the second waveguide is formed on one side of the main body, and a reception guide portion for the first waveguide and the second waveguide is formed on another side of the main body.