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    • 2. 发明授权
    • Dual channel superheterodyne receiver
    • 双通道超外差接收机
    • US06259902B1
    • 2001-07-10
    • US09181760
    • 1998-10-29
    • John Robert SiomkosEdgar Herbert Callaway, Jr.
    • John Robert SiomkosEdgar Herbert Callaway, Jr.
    • H04B118
    • H04B1/28H04B1/18
    • A dual channel receiver (100) includes a front end bandpass filter (120) that has a front end bandwidth, a first mixer (130), a second mixer (135), and two essentially identical receiver back ends (190, 195). The front end bandpass filter splits a received signal into a first signal (121) and a second signal (122) of essentially equal signal strengths and provides out of band isolation between first and second signal outputs (123, 124). The first mixer is coupled to the first signal and to a high side injection signal (131), and generates a first mixer output signal (132). The second mixer is coupled to the second signal and to a low side injection signal (136), and generates a second mixer output signal (137). Each of the two essentially identical receiver back ends is coupled to one of the first and second mixer output signals.
    • 双通道接收器(100)包括具有前端带宽的前端带通滤波器(120),第一混频器(130),第二混频器(135)和两个基本相同的接收器后端(190,195)。 前端带通滤波器将接收到的信号分离成基本上相等的信号强度的第一信号(121)和第二信号(122),并提供第一和第二信号输出(123,124)之间的带外隔离。 第一混频器耦合到第一信号和高端注入信号(131),并产生第一混频器输出信号(132)。 第二混频器耦合到第二信号和低侧注入信号(136),并产生第二混频器输出信号(137)。 两个基本相同的接收器后端中的每一个耦合到第一和第二混频器输出信号中的一个。