NFC ANTENNA ARCHITECTURE FOR MOBILE COMMUNICATION DEVICE WITH SINGLE-PIECE METAL HOUSING

摘要

Systems and methods for providing NFC (near field communications) in a portable communications device utilize antenna arms formed from openings in a metal unibody construction. Two of the antenna arms are driven by WiFi and cellular drives respectively, while an NFC antenna drive sharing the same mechanical connections provides a differential drive across the antenna ends, forming a primary NFC coil. In an embodiment, a smaller multi-turn coil is connected to the primary NFC coil, and may overlay a device speaker and may also be shielded by a ferrite material.

主权项

1. A portable electronic communication device comprising:
a housing including a one-piece metal housing, the one-piece metallic housing having an opening at each end, and having a break in the distal border of each opening such that the broken distal border of each opening forms two antennas connected to the remainder of the one-piece metal housing; a cellular antenna drive connected to a first one of the antennas associated with a first one of the openings; a WiFi antenna drive connected with a second one of the antennas associated with the first opening; and a differential NFC (near field communication) drive connected between the first and second antennas to drive an NFC loop comprising the first and second antennas and the remainder of the one-piece metal housing.