Multilevel and space-filling ground-planes for miniature and multiband antennas

If one or antennas that includes a plurality of inductive elements, and a multi-layer or a space filled with earth which acts as a radiation element, said ground plane has a special shape that affect the operating characteristics of the antenna. Return loss, bandwidth, gain, radiation efficiency, and the frequency performance may be controlled through the design of the multi-layer and the space filled with the ground plane. Further, the ground plane can be made smaller as compared to antennas with a single ground plane.