| 摘要 |
A device with a predominantly metal back side is provided. The device comprises: a non-conducting chassis having an interior and an exterior; at least one exterior radiating arm on the exterior of the chassis and a respective microstrip line located on the interior of the chassis, the exterior radiating arm and the microstrip electrically connected through the chassis, the exterior radiating arm and microstrip configured to resonate together in a first frequency range; and, at least one interior radiating arm located, and configured to resonate in one or more second frequency ranges higher than the first frequency range; a ground plane located on the exterior of the chassis, each of the exterior radiating arms and the ground plane being electrically separated from each other on the exterior of the chassis; and, one or more antenna feeds configured to connect to each of the microstrips and interior radiating arms. |
