Patent ID: 8570229

Claim:
A multiple antenna apparatus comprises: a substrate; a first antenna structure including a first metal trace that has a first pattern confined in a first geometric shape, where the first antenna structure has a near-zero electric field plane, and wherein the substrate supports the first antenna structure; a second antenna structure including a second metal trace that has a first pattern confined to a second geometric shape, wherein the second antenna structure is positioned on the substrate in substantial alignment with the near-zero electric field plane of the first antenna structure; and the first metal trace including: a first segment on a first layer of the substrate, wherein the first segment has a first segment geometric shape; and a second segment on a second layer of the substrate, wherein the second segment is coupled to the first segment, wherein the second segment has a second segment geometric shape, and wherein the first geometric shape includes the first and second segment geometric shapes; and the second metal trace including: a third segment on the first layer of the substrate, wherein the third segment has a third segment geometric shape; and a fourth segment on the second layer of the substrate, wherein the fourth segment is coupled to the third segment, wherein the fourth segment has a fourth segment geometric shape, and wherein the second geometric shape includes the third and fourth segment geometric shapes.