Multifrequency magnetic dipole antenna and methods for re-using the volume of an antenna

摘要

The present invention provides a multiresonant antenna structure in which the various resonant modes share at least portions of the structure volume. The frequencies of the resonant modes are placed close enough to achieve the desired overall bandwidth. Various embodiments are disclosed. The basic antenna element comprises a ground plane; a first conductor extending longitudinally parallel to the ground plane having a first end electrically connected to the ground plane and a second end; a second conductor extending longitudinally parallel to the ground plane having a first end electrically connected to the ground plane and a second end spaced apart from the second end of the first conductor; and an antenna feed coupled to the first conductor. Additional elements are coupled to the basic elexnerit, such as by stacking, nesting or juxtaposition in an array, In this way, individual antenna structures share common elements and volumes, thereby increasing the ratio of relative bandwidth to volume.