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    • 3. 发明申请
    • COMPACT MULTI-BAND PLANAR INVERTED F ANTENNA
    • 紧凑型多波段平面反相天线
    • WO2011022698A1
    • 2011-02-24
    • PCT/US2010/046230
    • 2010-08-20
    • QUALCOMM INCORPORATEDSHI, GuiningTRAN, Allen M.
    • SHI, GuiningTRAN, Allen M.
    • H01Q1/48H01Q9/04
    • H01Q1/48H01Q9/0421
    • A simple, compact multi-band PIFA including two arm portions, where one arm portion is grounded at two points to form a loop, a ground plane, and a plastic carrier and housing. The antenna radiates a same signal from both arm portions, at different efficiencies according to the radiated frequency and the effective length of each arm. The antenna is made from a single standard metal sheet by cutting it and is assembled with the metal ground plane and the other plastic parts. In one embodiment, the antenna is folded into a 3D U-shape to reduce its size for use in mobile communication devices. In another embodiment, the antenna is a penta-band antenna with return loss of -6B or better and measures 40 x 8 x 8 mm or smaller.
    • 一个简单,紧凑的多频带PIFA,包括两个臂部分,其中一个臂部分在两个点处接地以形成环路,接地平面以及塑料载体和壳体。 根据辐射频率和每个臂的有效长度,天线以不同的效率从两个臂部辐射相同的信号。 天线由单个标准金属片材切割而成,并与金属接地平面和其他塑料部件组装在一起。 在一个实施例中,天线被折叠成3D U形以减小其尺寸以用于移动通信设备。 在另一个实施例中,天线是回波损耗为-6B或更好并且尺寸为40×8×8mm或更小的五波段天线。