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    • 32. 发明申请
    • COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND METHOD FOR COMMUNICATION
    • 通信设备,通信系统和通信方法
    • US20110045769A1
    • 2011-02-24
    • US12857909
    • 2010-08-17
    • Masahiro YoshiokaHiroshi Ichiki
    • Masahiro YoshiokaHiroshi Ichiki
    • H04B5/00
    • H04B1/48
    • A communication device includes the following elements. A transmission and reception processing unit processes a transmission signal and a reception signal. A transmission amplifier is supplied with a binary transmission signal switching between a high level and a low level and is capable of making a choice between amplifying the transmission signal and entering a high-impedance state at an output. An antenna is supplied with a transmission signal output from the transmission amplifier. A comparator compares a signal received by the antenna with threshold values to obtain a reception signal, and supplies the reception signal to the transmission and reception processing unit. A capacitor is connected between the transmission amplifier and the antenna or between the antenna and the comparator. A control unit allows the transmission amplifier to be in the high-impedance state for a period during which the transmission and reception processing unit receives a reception signal.
    • 通信设备包括以下元件。 发送和接收处理单元处理发送信号和接收信号。 向发送放大器提供在高电平和低电平之间切换的二进制传输信号,并且能够在放大发送信号和在输出端进入高阻抗状态之间作出选择。 向天线提供从发送放大器输出的发送信号。 比较器将天线接收的信号与阈值进行比较以获得接收信号,并将接收信号提供给发送和接收处理单元。 电容器连接在发射放大器和天线之间或天线与比较器之间。 控制单元允许发送放大器在发送和接收处理单元接收到接收信号的期间内处于高阻抗状态。