Microstrip antenna structure having stacked microstrip elements

摘要: The structure includes a ground plane and at least two stacked microstrip elements with each element comprising conducting layer of dielectric material. planes the intermediate layers are configured so that they resonate closely spaced frequencies. Each in structure, except top one, an opening which is large enough to permit sufficient electric field coupling occur between individual response characteristics merge form broadband characteristic. antenna present invention thus has substantially improved bandwidth over prior art antennas.