Center fed open ended waveguide (OEWG) antenna arrays

A method of radiating radar comprising:

• feeding electromagnetic energy to a waveguide by a waveguide feed, wherein the waveguide comprises a first side and a second side opposite of the first side;
• propagating, via the waveguide, the electromagnetic energy between each of a plurality of radiating elements and the waveguide feed, wherein the plurality of radiating elements is arranged in a linear array coupled to the first side of the waveguide, and wherein the waveguide feed is coupled to the second side of the waveguide feed at a location between a first portion of the plurality of radiating elements and a second portion of the plurality of radiating elements;
• and
• radiating at least a portion of the electromagnetic energy via each radiating element.

A radar unit comprising:

• a set of radiating elements;
• a waveguide feed;
• and
• a waveguide configured to guide electromagnetic energy between the set of radiating elements and the waveguide,
• wherein the waveguide comprises a first side and a second side opposite the first side,
• wherein the set of radiating elements is coupled to the first side of the waveguide,
• wherein the waveguide feed is coupled to the second side of the waveguide at a location between a first portion of the set of radiating elements and a second portion of the set of radiating elements.