Magnetically boosted NFC antenna
    5.
    发明授权

    公开(公告)号:US09608327B1

    公开(公告)日:2017-03-28

    申请号:US14312716

    申请日:2014-06-24

    CPC classification number: H01Q7/06 H01Q1/243 H04B5/0081

    Abstract: The range of a Near Field Communications (NFC) in an electronic device is boosted by positioning a magnet near the center of a spiral loop NFC antenna. The magnet interacts with a modulated magnetic field generated by the antenna, concentrating the power of the modulated field. The magnet may be part of another component of the device, such as a magnet in the zoom mechanism of a camera. If the electronic device has a metal case, performance of the NFC antenna is further enhanced by including an opening through the metal over an axis of the magnet and a segment of the antenna's spiral loop, and by extending the opening to eliminate a parasitic current pathway around the antenna. The extended opening in the metal case significantly reduces the effect of eddy currents generated in the housing that counter the NFC magnetic field.

    Loop-feeding wireless area network (WAN) antenna for metal back cover
    7.
    发明授权
    Loop-feeding wireless area network (WAN) antenna for metal back cover 有权
    用于金属后盖的环路馈电无线局域网(WAN)天线

    公开(公告)号:US09413058B1

    公开(公告)日:2016-08-09

    申请号:US14796040

    申请日:2015-07-10

    CPC classification number: H01Q1/243 H01Q5/335 H01Q9/42 H01Q21/28

    Abstract: Antenna structures and methods of operating the same are described. One apparatus includes a metal cover having a first corner portion, a second corner portion, and an elongated portion. The elongated portion is physically separated from the first corner portion by a first cutout in the metal cover and the elongated portion is physically separated from the second corner portion by a second cutout in the metal cover. A radio frequency (RF) circuit is coupled to a feeding element that is coupled to the elongated portion. A capacitor is coupled between the feeding element and the first corner portion near the distal end of the feeding element. The RF circuit is operable to cause the feeding element, the elongated portion, and the first corner portion to radiate electromagnetic energy as a first radiator in a first frequency range with dual resonance.

    Abstract translation: 描述了天线结构及其操作方法。 一种装置包括具有第一角部,第二角部和细长部的金属盖。 细长部分通过金属盖中的第一切口在物理上与第一角部分离,并且细长部分通过金属盖中的第二切口在物理上与第二角部分离。 射频(RF)电路耦合到耦合到细长部分的馈电元件。 馈电元件和靠近馈电元件远端的第一角部之间耦合电容器。 RF电路可操作以使得馈电元件,细长部分和第一角部分在具有双重谐振的第一频率范围内作为第一辐射器辐射电磁能。

    Antenna switching in an antenna system
    8.
    发明授权
    Antenna switching in an antenna system 有权
    天线切换天线系统

    公开(公告)号:US09369187B1

    公开(公告)日:2016-06-14

    申请号:US14692686

    申请日:2015-04-21

    CPC classification number: H04B7/0404 H01Q1/521 H04B1/40 H04B7/0802 H04B7/0874

    Abstract: Technologies described herein are directed to switching between antennas in response to a change in an isolation value identified using a neutralization line. A device may include a first set of antennas including a first antenna, a second antenna, a neutralization line coupled between the first antenna and the second antenna, and a controller. The controller is coupled to the neutralization line. The controller determines a first isolation value between the first antenna and the second antenna using the neutralization line, determines a change in isolation value between the first antenna and the second antenna to a second isolation value, determines that the second isolation value exceeds a threshold, and switches from using the first set of antennas to using a second set of antennas.

    Abstract translation: 本文描述的技术涉及响应于使用中和线识别的隔离值的变化而在天线之间切换。 设备可以包括第一组天线,包括第一天线,第二天线,耦合在第一天线和第二天线之间的中和线,以及控制器。 控制器耦合到中和线。 控制器使用中和线确定第一天线和第二天线之间的第一隔离值,将第一天线与第二天线之间的隔离值的变化确定为第二隔离值,确定第二隔离值超过阈值, 并且从使用第一组天线切换到使用第二组天线。

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