Antenna switching module having amplification function
    5.
    发明授权
    Antenna switching module having amplification function 失效
    具有放大功能的天线切换模块

    公开(公告)号:US07010274B2

    公开(公告)日:2006-03-07

    申请号:US10396466

    申请日:2003-03-26

    申请人: Joo Young Choi

    发明人: Joo Young Choi

    IPC分类号: H04B1/44 H04B1/46

    CPC分类号: H01P5/12

    摘要: Disclosed herein is an antenna switching module having an amplification function, in which the power amplification of a transmission signal is performed together with the switching of transmission/reception signals to an antenna, using a basic antenna switching construction, thus reducing costs of mobile terminals and miniaturizing the mobile terminals.The antenna switching module has an amplifier, a low pass filter, a transmission line, and a switching diode. The amplifier is implemented using at least one active element and a bias circuit to intercept or amplify a transmission signal applied through a transmission terminal, wherein the bias circuit drives the active element to be turned on/off in response to a control signal and determines an amplification factor. The low pass filter is disposed between the amplifier and the antenna terminal to eliminate harmonic frequency components included an output signal of the amplifier. The transmission line has a length of ¼ of a wavelength (λ) of a reception signal to connect the antenna terminal and the reception terminal to each other. The switching diode is disposed between a first end of the transmission line, connected to the reception terminal, and the ground, and is switched on/ff in response to the control signal.

    摘要翻译: 这里公开了具有放大功能的天线切换模块,其中使用基本天线切换结构,将发送信号的功率放大与天线的发送/接收信号的切换一起执行,从而降低移动终端的成本, 使移动终端小型化。 天线切换模块具有放大器,低通滤波器,传输线和开关二极管。 使用至少一个有源元件和偏置电路来实现放大器,以截取或放大通过发送端子施加的发送信号,其中偏置电路响应于控制信号驱动有源元件导通/截止,并且确定一个 放大系数。 低通滤波器设置在放大器和天线端子之间,以消除包括放大器的输出信号的谐波频率分量。 传输线具有将天线端子和接收端子彼此连接的接收信号的波长(λ)的1/4的长度。 开关二极管设置在与接收端子连接的传输线的第一端和地之间,并且响应于控制信号被接通/ ff。