| 摘要 |
A wireless communications terminal can include a housing having an interior surface that is configured to enclose at least a controller circuit, a transceiver circuit, and a RF feed circuit and to at least partially enclose a display device and a user input interface. The housing extends between opposing top and bottom surfaces, between opposing first and second side surfaces, and between opposing front and back surfaces. A first radiator line is connected on distal ends to a feed node and to a ground node and extends in a loop across at least a majority of a width of the housing between the first and second side surfaces. The first radiator line resonates in a first frequency range responsive to first electromagnetic radiation coupled to the feed and ground nodes. A second radiator line is connected to the feed node and extends away from an adjacent portion of the first radiator line, and resonates in a second frequency range responsive to second electromagnetic radiation coupled to the feed and ground nodes. A third radiator line is connected to the first radiator line at a branch node that is spaced apart from the feed node and the ground node, and extends away from an adjacent portion of the first radiator line and resonates in a third frequency range responsive to third electromagnetic radiation coupled to the feed and ground nodes.
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