Patent ID: 7511670

Claim:
Antenna apparatus for a radio device, said antenna apparatus comprising: a substrate; a first group of loop strips disposed upon said substrate, the loop strips of said first group configured to form a parallelogram, the loop strips of said first group having at least one strip extending in a first polarization direction and at least one strip extending in a second polarization direction; and a second group of loop strips disposed upon said substrate, the loop strips of said second group configured to divide the parallelogram into two substantially equal parts, with the loop strips of said second group extending from a first side of the parallelogram to a second side of the parallelogram, the loop strips of said second group having at least one strip extending in the first polarization direction and at least one strip extending in a second polarization direction, said first group and said second group, each having strips extending in the first and second polarization directions, respectively, exhibiting dual-polarization operation.