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1. 发明公开

EP1424770A1 Balanced sub-harmonic mixer 有权
标题翻译： Subharmonischer Gegentaktmischer
公开(公告)号：EP1424770A1
公开(公告)日：2004-06-02
申请号：EP03255905.6
申请日：2003-09-20
申请人： Northrop Grumman Corporation
发明人： Katz, Richard H.
IPC分类号： H03D7/14
CPC分类号： H04B1/30 , H03D9/0633 , H03D2200/009
摘要： A wide band mixer is provided that mitigates local oscillator leakage. A LO signal is provided to a 180 degree splitter that provides a first intermediate LO signal and a second intermediate LO signal 180° out of phase from one another. Since both the first and second intermediate LO signals are 180° out of phase, the fundamental LO leakage is mitigated at the RF port by the in-phase combination of the 180° out of phase LO tones canceling one another out and providing strong LO/RF rejection. An RF or microwave input signal is provided to a power splitter to provide a first intermediate RF signal and a second intermediate RF signal. The first intermediate LO signal is mixed with the first intermediate RF signal and the second intermediate LO signal is mixed with the second intermediate RF signal to provide an intermediate frequency signal at the output of the mixer.
摘要翻译：提供宽带混频器，可减轻本地振荡器的泄漏。将LO信号提供给180度分离器，其提供彼此相位相差180度的第一中间LO信号和第二中间LO信号。由于第一和第二中间LO信号都是180°异相，因此在RF端口通过180°异相LO音的同相组合相互抵消并提供强LO / RF拒绝。将RF或微波输入信号提供给功率分配器以提供第一中间RF信号和第二中间RF信号。第一中间LO信号与第一中间RF信号混合，第二中间LO信号与第二中间RF信号混合，以在混频器的输出处提供中频信号。

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