Integration of coil and UHF antenna for wirless wireless power transfer and data telemetry

There is a great demand for wireless power transfer (WPT) technology to be embedded in mobile devices because WPT offers the possibility to charge electronic devices without having to plug them into a traditional power outlet. Electric power can be transferred wirelessly using magnetic resonance coupling between two closely spaced coils. Due to the limited space in mobiles units, this paper presents a novel printed coil which is integrated with multiband antenna. The proposed design can be used as a coil for wireless power transmission, it is also a multiband antenna for general smart phones' frequency bands. The measured and simulated results verified that the proposed coil is compatible with QI specification, it can also be induced to achieve wideband performance covering GPS/ GSM/ PCS/ DCS/ UMTS/ WIFI/ Bluetooth, and WiMAX, which is suitable for mobile devices.