Dielectric loaded waveguide for low loss signal distributions and small form factor antennas

An antenna system comprising:

• a feed portion configured to connect the antenna system to a radar device;
• a waveguide portion comprising one or more radiation channels, each of the radiation channels:
• being configured to be coupled to a radar channel of the radar device via the feed portion,
• being filled with a first dielectric, and
• comprising a surface with at least one radiation element, the surface being configured to allow electromagnetic (EM) energy to escape or enter the first dielectric;
• one or more additional channels filled with a second dielectric that differs from the first dielectric, the additional channels being electromagnetically coupled to the radiation channels to allow for a transfer of at least a part of the EM energy between the radiation channels and the additional channels;
• and
• one or more absorption channels, each of the absorption channels:
• filled with an absorber material,
• being electromagnetically coupled to one or more of the radiation channels to allow for a transfer of at least a part of the EM energy between the radiation channels and the respective absorption channel, and
• having at least one surface with at least one absorption element that allows one or more portions of the EM energy that enter or exit the first dielectric to be absorbed by the absorber material.