CPC G01S 7/03 (2013.01) [B60R 16/023 (2013.01); G01S 13/931 (2013.01); H01P 3/122 (2013.01); H01Q 13/10 (2013.01)] | 20 Claims |
12. A system, the system comprising:
a coupler;
a transceiver operable upon actuation to interact with electromagnetic waves associated with the coupler; and
a waveguide comprising:
a pipe configured to capture the electromagnetic waves and contain a dielectric, the pipe defining an open end to a longitudinal direction through the pipe;
an array of radiating slots through a surface of the pipe and in communication with an inside surface of the pipe; and
at least one parasitic groove:
separate from the pipe;
with at least a portion of a length that is parallel to the array of radiating slots; and
spaced at a distance from the array of radiating slots to suppress grating lobes in an antenna pattern.
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