ELECTRICALLY CONDUCTIVE COIL PAIR CONFIGURED TO BE COUPLED TO A HOUSING

摘要

An apparatus comprising a first electrically conductive coil pair configured to be coupled a housing outside to an inner surface of a side portion of the housing, the housing comprising a top portion and the side portion, the side portion extending upward to the top portion, the top portion being open and a second electrically conductive coil pair configured to be coupled to the housing outside of the inner surface is disclosed.