Magnetic Field Antenna

摘要

A magnetic field antenna that provides high efficiency and a compact form factor. Electromagnetic shielding of electrical components used in the antenna is provided, and one embodiment of the invention is a wireless battery-free communications earplug.

主权项

1. A magnetic field antenna comprising:
a) an earplug body having a distal end and a proximal end; b) a magnetic core section within the earplug body; c) an antenna coil having at least one turn wrapped at least partially around the magnetic core section; d) at least one electrical component within the earplug body, electrically coupled to the antenna coil; and e) an eartip adapter at least partially made of magnetic material, located on the proximal end of the earplug body, the eartip adapter being magnetically coupled to the magnetic core section and acoustically coupled to the at least one electrical component.