Radar for vehicle and vehicle including the same
A radar for a vehicle may include a frame having a waveguide antenna embedded therein and extending in a direction crossing an extension direction of the waveguide antenna, a plated region covering at least a portion of the outer peripheral surface of the frame and formed of a metallic material, and an un-plated region not coated with the metallic material on one surface of the frame, wherein the un-plated region is located to be adjacent to the waveguide antenna. Therefore, the radar for the vehicle can improve the stability of an antenna pattern and a phase.
1 . A radar for a vehicle, comprising:
at least one waveguide antenna;
a frame in which the waveguide antenna is embedded;
a plated region including a metallic material and covering at least an outer peripheral portion of one surface of the frame; and
at least one un-plated region where no metallic material is disposed on the one surface of the frame, wherein the un-plated region is located to be adjacent to the waveguide antenna,
wherein the un-plated region is configured to reduce volume or size of the ground by the plated region.
2 . The radar of claim 1 , wherein a shape of the un-plated region and an area where the un-plated region is located are configured to be ground for the waveguide antenna.
3 . The radar of claim 1 , wherein a length of the un-plated region is greater than or equal to a length of the waveguide antenna.
4 . The radar of claim 3 , wherein a width of the un-plated region is greater than or equal to a value of dividing a wavelength of a wave passing through the waveguide antenna in half.
5 . The radar of claim 1 , wherein the at least one un-plated region comprises a plurality of the un-plated regions that are spaced apart from each other on the one surface of the frame.
6 . The radar of claim 5 , wherein the waveguide antenna is located between two of the plurality of the un-plated regions.
7 . The radar of claim 6 , wherein one of the plurality of the un-plated regions which is disposed to be adjacent to one side of the waveguide antenna and another of the plurality of the un-plated regions which is disposed to be adjacent to another side of the waveguide antenna have a shape symmetrical to each other with respect to the waveguide antenna.
8 . The radar of claim 5 , wherein each of the plurality of un-plated regions has one or more slots and the plurality of un-plated regions are arranged side by side in a direction substantially parallel to the waveguide antenna.
9 . The radar of claim 1 , wherein the at least one waveguide antenna comprises a plurality of the waveguide antennas embedded in the frame.
10 . The radar of claim 9 , wherein the un-plated region is located between two of the plurality of the waveguide antennas.
11 . The radar of claim 1 , wherein the un-plated region has a plurality of convex portions and a plurality of concave portions which are arranged to be alternate to each other.
12 . The radar of claim 1 , wherein the waveguide antenna comprises a slot antenna.
13 . The radar of claim 1 , wherein the waveguide antenna comprises a horn antenna.
14 . The radar of claim 1 , wherein an operating frequency of the waveguide antenna is between 76 GHz and 81 GHz.
15 . A vehicle, comprising:
a radar configured to transmit an electromagnetic wave signal and receive a reflected electromagnetic wave signal; and
a processor configured to generate information associated with surrounding of the vehicle based on the reflected electromagnetic wave signal received by the radar,
wherein the radar comprises:
a waveguide antenna;
a frame in which the waveguide antenna is embedded;
a plated region including a metallic material and covering at least an outer peripheral portion of one surface of the frame; and
at least one un-plated region where no metallic material is disposed on the one surface of the frame, wherein the un-plated region is located to be adjacent to the waveguide antenna,
wherein the un-plated region is configured to reduce volume or size of the ground by the plated region.
16 . The vehicle of claim 15 , wherein a width of the un-plated region is greater than or equal to a value of dividing a wavelength of a wave passing through the waveguide antenna in half.
17 . The vehicle of claim 15 , wherein the processor is configured to maintain a constant driving speed of the vehicle based on the information associated with the surrounding of the vehicle.
18 . The vehicle of claim 15 , wherein the processor is configured to adjust a driving speed of the vehicle such that a distance between the vehicle and a preceding vehicle is greater than a preset reference distance, based on the information associated with the surrounding of the vehicle.
19 . The vehicle of claim 15 , wherein the controller is configured to adjust a driving direction of the vehicle based on the information associated with the surrounding of the vehicle, when a breakdown of the vehicle occurs.