Low-profile high-efficiency wide-scanning antenna array

An electronic device comprising:

• an antenna comprising:
• a substrate;
• first transmission lines on the substrate, the first transmission lines extending in a first direction from a first side of the substrate;
• second transmission lines on the substrate, the second transmission lines alternated with the first transmission lines, the second transmission lines extending in a second direction, opposite from the first direction, from a second side of the substrate that is opposite from the first side;
• first antenna elements on the substrate, the first antenna elements coupled to a first of the first transmission lines (a first-first transmission line), the first antenna elements extending in a third direction away from the first-first transmission line;
• and
• second antenna elements on the substrate, the second antenna elements coupled to a first of the second transmission lines (a first-second transmission line), the second antenna elements extending in a fourth direction away from the first-second transmission line and toward the first-first transmission line, the fourth direction opposite to the third direction, the first-first transmission line and the first-second transmission line positioned adjacently on the substrate;
• and
• processing circuitry coupled to the first and second transmission lines, the processing circuitry configured to supply power to control the first and second antenna elements,
• wherein a first distance between the adjacent first-first and first-second transmission lines is different than a second distance between the first-first transmission line and a second of the second transmission lines (a second-second transmission line), the second-second transmission line adjacent to the first-first transmission line on an opposite side from the first-second transmission line, and
• wherein at least two antenna elements in the first antenna elements are differently sized.

A method comprising:

• coupling first transmission lines on a substrate, the first transmission lines extending in a first direction from a first side of the substrate;
• coupling second transmission lines on the substrate, the second transmission lines alternated with the first transmission lines, the second transmission lines extending in a second direction, opposite from the first direction, from a second side of the substrate that is opposite from the first side;
• coupling first antenna elements on the substrate, the first antenna elements coupled to a first of the first transmission lines (a first-first transmission line), the first antenna elements extending in a third direction away from the first-first transmission line;
• and
• coupling second antenna elements to a first of the second transmission lines (a first-second transmission line), the second antenna elements extending in a fourth direction away from the first-second transmission line and toward the first-first transmission line, the fourth direction opposite to the third direction, the first-first transmission line and the first-second transmission line positioned adjacently on the substrate,
• wherein a first distance between the adjacent first-first and first-second transmission lines is different than a second distance between the first-first transmission line and a second of the second transmission lines (a second-second transmission line), the second-second transmission line being adjacent to the first-first transmission line on an opposite side from the first-second transmission line, and
• wherein at least two antenna elements in the first antenna elements are differently sized.