Circularly polarized waveguide slot array

A circular polarized waveguide slot array, comprising:

• a first waveguide slot section extending along a longitudinal axis, the first waveguide slot section including a plurality of antenna elements for transmitting or receiving a circularly polarized signal;
• and
• a second waveguide slot section coupled side-to-side with the first waveguide slot section and extending along said longitudinal axis, the second waveguide slot section including a plurality of antenna elements for transmitting or receiving said circularly polarized signal at a phase which is substantially complementary to said circularly polarized signal transmitted by or received by the first waveguide slot section,
• wherein one of said plurality of antenna elements disposed on the first waveguide slot section is offset from a corresponding one of said plurality of antenna elements disposed on the second waveguide slot section substantially one half of a predefined guide wavelength λg along said longitudinal axis,
• wherein each of said plurality of antenna elements included on the first waveguide slot section comprises a slot pair comprising a longitudinal slot extending along said longitudinal axis and a traverse slot extending substantially orthogonal to the longitudinal slot,
• wherein each of said plurality of antenna elements included on the second waveguide slot section comprises a slot pair comprising a longitudinal slot extending along said longitudinal axis and a traverse slot extending substantially orthogonal to the longitudinal slot,
• wherein the traverse slot disposed on the first waveguide slot section is offset from the traverse slot disposed on the second waveguide slot section substantially one half of said predefine guide wavelength λg along the longitudinal axis,
• wherein the first waveguide slot section further includes a control slot pair having said longitudinal slot and said traverse slot, whereby the traverse slot extends to two opposing and longitudinally-oriented slot sections, and
• wherein the second waveguide slot section further includes a control slot pair having said longitudinal slot and said traverse slot, whereby the traverse slot extends to two opposing and longitudinally-oriented slot sections.