ANTENNA SYSTEM WITH PARASITIC ELEMENT FOR HEARING AID COMPLIANT ELECTROMAGNETIC EMISSION

摘要

An electromagnetic (EM) field mitigation system includes a ground plane (510), an antenna element (502), and a parasitic resonator element (504). The antenna element is coupled to the ground plane and resonates within at least one predetermined frequency band for transmitting and receiving radio frequency (RF) signals modulated at one or more frequencies within at least a first frequency band. The parasitic resonator element includes at least a first leg (506) and a second leg (508) connected to the ground plane and located a predetermined distance (514) from the antenna element for mitigating the EM emissions of the antenna element at one or more predetermined locations within a HAC measurement plane. The first leg of the parasitic resonator element is connected to the ground plane on a first side of an effective electric field mid-line (512) laterally dividing the ground plane, and the second leg of the parasitic antenna element is connected to the ground plane on a second side of the effective electric field mid-line.