Dual-polarized magnetic antennas

摘要

The present disclosure generally pertains to dual-polarized magnetic antennas that may be used in various applications and are particularly suited for use in mobile devices and systems. In one exemplary embodiment, a dual-polarized antenna has a ferrite substrate that provides for the use of small antenna elements and also provides broad bandwidth and good impedance matching and isolation making the antenna attractive for use in mobile applications. Such antenna also has nearly omnidirectional radiation patterns and orthogonal polarizations. Further, the radiator type may be selected depending on the desired effective permeability in order to control return loss, isolation, and fractional bandwidth (FBW).

主权项

1. A dual-polarized magnetic antenna, comprising:
a base having a first surface; a first ferrite antenna element positioned on the first surface of the base and having a first conductive trace coupled to a first radiator, the first radiator having a first elongated substrate comprising ferrite and the first conductive trace coupled to a first conductive connection; and a second ferrite antenna element positioned on the first surface of the base and having a second conductive trace coupled to a second radiator, the second radiator having a second elongated substrate comprising ferrite and the second conductive trace coupled to a second conductive connection, wherein the second ferrite antenna element is electrically isolated from the first ferrite antenna element.