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    • 7. 发明申请
    • TUNABLE ANTENNAS FOR HANDHELD DEVICES
    • 手持式装置天线
    • WO2008030286A1
    • 2008-03-13
    • PCT/US2007/014078
    • 2007-06-14
    • APPLE INC.ZHANG, ZhijunCABALLERO, Ruben
    • ZHANG, ZhijunCABALLERO, Ruben
    • H01Q1/24H01Q5/00H01Q9/04
    • H01Q1/243H01Q5/371H01Q9/0421H01Q9/0442
    • A compact tunable antenna for a handheld electronic device and methods for calibrating and using compact tunable antennas are provided. The antenna can have multiple ports. Each port can have an associated feed and ground. The antenna design can be implemented with a small footprint while covering a large bandwidth. The antenna can have a radiating element formed from a conductive structure such as a patch or helix. The antenna can be shaped to accommodate buttons and other components in the handheld device. The antenna may be connected to a printed circuit board in the handheld device using springs, pogo pins, and other suitable connecting structures. Radio- frequency switches and passive components such as duplexers and diplexers may be used to couple radio- frequency transceiver circuitry to the different feeds of the antenna. Antenna efficiency can be enhanced by avoiding the use of capacitive loading for antenna tuning.
    • 提供了一种用于手持电子设备的紧凑型可调谐天线以及用于校准和使用紧凑型可调谐天线的方法。 天线可以有多个端口。 每个端口可以具有相关联的馈电和接地。 天线设计可以实现小占地面积,同时覆盖大的带宽。 天线可以具有由诸如贴片或螺旋之类的导电结构形成的辐射元件。 天线可以被成形为适应手持设备中的按钮和其他部件。 天线可以使用弹簧,弹簧针和其它合适的连接结构连接到手持设备中的印刷电路板。 无线电频率开关和无源组件(如双工器和双工器)可用于将射频收发器电路耦合到天线的不同馈送。 通过避免使用电容负载来天线调谐,可以提高天线效率。