A closer look: Qualcomm's eZone wireless charger

Qualcomm at CTIA demonstrated its upcoming eZone system that will provide wireless charging across a wide range of devices from a variety of manufacturers. The technology utilizes near-field magnetic resonance to eliminate the need for a direct electrical contact. Devices can also be placed anywhere on the charging pad, regardless of positioning. A relatively small size area will simultaneously charge several batteries. The use of near-field magnetic resonance provides several advantages over other wireless charging technologies. A coil is contained in the charging base, creating a magnetic field, while small coils are built into each device. The technology preview showed cellphones with an attachment similar in appearance to an extended battery. Ultimately the small coils could be molded into plastic housings, eliminating the need for to attach an external component.

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