Patent ID: 8462061

Claim:
A single-layer antenna, comprising: a loop formed by a first electrical trace including a first end connected to a feed at a drive point and a second end connected to a ground with a gap formed between the first end and the second end so as to create a potential difference in voltage between the first end and the second end, the first electrical trace being located on a plane and configured to generate an H-field at a frequency when a current flows through the first electrical trace from the first end to the second end; and an electric field radiator formed by a second electrical trace located on the plane, the second electrical trace being coupled to the first electrical trace at a single coupling area that is not located at the first end or the second end and positioned relative to the first electrical trace so as to receive a current flowing in a first direction through the first coupling area and to reflect the current in a second direction opposite the first direction into the first electrical trace causing the electric field radiator to emit an E-field at the frequency orthogonal to the H-field and to increase efficiency of the antenna at the frequency, wherein the single-layer antenna is a compound field antenna.