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1.发明公开Portable radio communication device and loaded antenna therefor 失效TragbaresFunkgerätund belastete Antennedafür。
公开(公告)号：EP0644606A1
公开(公告)日：1995-03-22
申请号：EP94103050.4
申请日：1994-03-01
申请人： FUJITSU LIMITED
发明人： Hanawa, Tetsuya, c/o FUJITSU LIMITED , Kuga, Yuji, c/o FUJITSU LIMITED , Takashima, Yutaka, c/o FUJITSU LIMITED , Matsumoto, Yoshihiro, c/o FUJITSU LIMITED , Ono, Masayuki, c/o FUJITSU LIMITED
摘要： A portable radio communication device has an antenna (1) which can be extended for use and retracted for storage, and can transmit a signal at the same level of electric energy when the antenna is stored as when the antenna is extended. When the antenna (1) is retracted and stored, the stored condition is detected by a detecting switch (2). In response to a detected signal from the detecting switch, a transmission output controller (5) produces an increased transmission output control signal to increase the level of electric energy of the signal to be transmitted which is higher than a normal level of electric energy of signals transmitted from the antenna. When the increased transmission output control signal is generated, a power amplifier (3) amplifies a signal to be transmitted which is supplied from a transmission signal generator (4), and supplies the amplified signal to the antenna. Therefore, even when the antenna is stored, it can radiate the signal at the same level of electric energy as when the antenna is extended. The antenna comprises an antenna which operates as a loaded antenna when it is extended and as a helical antenna when it is stored.
摘要翻译： 便携式无线电通信设备具有可以延长使用和收缩以存储的天线（1），并且当天线被天线延伸时存储时可以发送具有相同电能水平的信号。 当天线（1）收回并存储时，由检测开关（2）检测存储条件。 响应于来自检测开关的检测信号，发送输出控制器（5）产生增加的发送输出控制信号，以增加要发送的信号的电能水平高于信号的正常电能水平 从天线发射。 当产生增加的发送输出控制信号时，功率放大器（3）放大从发送信号发生器（4）提供的要发送的信号，并将放大的信号提供给天线。 因此，即使在天线被存储的情况下，也能够以与天线延伸时相同的电能水平照射信号。 该天线包括天线，当天线被延伸时作为加载天线工作，并且当它被存储时作为螺旋天线。
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公开(公告)号：EP0644606B1
公开(公告)日：2000-06-14
申请号：EP94103050.4
申请日：1994-03-01
申请人： FUJITSU LIMITED
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