Portable communication device with optimized transmission loss
    21.
    发明授权
    Portable communication device with optimized transmission loss 失效
    便携式通信设备,具有优化的传输损耗

    公开(公告)号:US5991608A

    公开(公告)日:1999-11-23

    申请号:US815240

    申请日:1997-03-12

    申请人: Lukas Leyten

    发明人: Lukas Leyten

    摘要: A portable electronic apparatus is disclosed having an antenna and a communication circuit. The antenna impedance is chosen to be a predetermined value which is deliberately mismatched to the impedance of the communication for a predetermined frequency band. This mismatch is chosen to optimize the signal loss between the antenna and the communication circuit when the antenna is far and near a disturbing source. The imaginary part of the antenna impedance has a sign opposite to the sign of the circuit impedance when the antenna is a predetermined distance from the disturbing source.

    摘要翻译: 公开了一种具有天线和通信电路的便携式电子设备。 天线阻抗被选择为与预定频带的通信的阻抗故意地不匹配的预定值。 选择该不匹配以优化当天线远离干扰源时天线与通信电路之间的信号损耗。 当天线距离干扰源为预定距离时,天线阻抗的虚部具有与电路阻抗的符号相反的符号。