Waveguide antenna using a continuous loop waveguide feed and method of propagating electromagnetic waves

An antenna comprising:

• a plurality of waveguide assemblies, wherein each waveguide assembly comprises:
• a base waveguide forming a continuous loop;
• and
• a first waveguide, a second waveguide and a third waveguide in direct communication with the base waveguide at a first position, a second position and a third position, respectively, wherein the first position is spaced apart from the second and third positions by about one-sixth the circumference of the loop, and the second position is uninterruptedly spaced apart from the third position by about two-thirds the circumference of the loop, wherein the first, second and third waveguides comprise closed-channel waveguides,
• wherein the plurality of waveguide assemblies are arranged such that the second and third waveguides of at least one waveguide assembly are in direct communication with the first wave guides of a pair of other waveguide assemblies, and
• wherein the second and third waveguides of a plurality of the waveguide assemblies have an open end and are configured to at least one of radiate electromagnetic waves or focus radiating electromagnetic waves.

A method of propagating electromagnetic waves, the method comprising:

• providing an antenna comprising:
• a base waveguide forming a continuous loop;
• and
• a first waveguide, a second waveguide and a third waveguide in direct communication with the base waveguide at a first position, a second position and a third position, respectively, wherein the first position is spaced apart from the second and third positions by about one-sixth the circumference of the loop, and the second position is uninterruptedly spaced apart from the third position by about two-thirds the circumference of the loop, wherein the first, second and third waveguides comprise closed-channel waveguides;
• and
• propagating an electromagnetic wave through at least the base waveguide, and the second and third waveguides, the electromagnetic wave being radiated by the second and third waveguides, or comprising a radiated electromagnetic wave having been focused by the second and third waveguides.