Planar rf antenna with duplicate unit cells

An antenna comprising:

• a planar dielectric substrate having opposing first and second surfaces;
• a ground plane disposed at the first surface, the ground plane composed of conductive material;
• and
• a radiating plane disposed at the second surface, the radiating plane including a plurality of unit cells, wherein each unit cell comprises:
• a layer of conductive material formed at the second surface in a specified shape, the specified shape forming a radiating patch having an opening substantially devoid of the conductive material;
• and
• at least one via extending from the opening to the ground plane;
• and
• a discrete inductor disposed at the second surface and electrically coupling the at least one via to the conductive material of the radiating patch.

A method comprising:

• transmitting a radio frequency (RF) signal from a first antenna of a first device mounted at a first location on a user's body to a second antenna of a second device mounted at a second location on the user's body;
• and
• wherein at least one of the first antenna and the second antenna comprises
• a planar dielectric substrate having opposing first and second surfaces;
• a ground plane disposed at the first surface, the ground plane composed of conductive material;
• and
• a radiating plane disposed at the second surface, the radiating plane including a plurality of unit cells, wherein each unit cell comprises:
• a layer of conductive material formed at the second surface in a specified shape, the specified shape including a first portion forming a load inductor and second portion forming a radiating patch electrically coupled to the load inductor;
• and
• at least one via electrically coupling the load inductor to the ground plane.