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公开(公告)号:US06643501B1
公开(公告)日:2003-11-04
申请号:US09454943
申请日:1999-12-02
申请人: Trent McKeen , Dominque Kwong
发明人: Trent McKeen , Dominque Kwong
IPC分类号: H04B110
CPC分类号: H04B1/28 , H05K9/0022
摘要: In a superheterodyne receiver, energy can bypass a filter by magnetically coupling to a metallic radio frequency shield. This is especially a problem with small form factor devices in which the metallic radio frequency shield is positioned close to the filter. By using a ferrite-embedded element positioned between the filter and the RF shield, some of the undesired harmonics produced by the mixer can be dissipated into heat.
摘要翻译: 在超外差接收机中,能量可以通过磁耦合到金属射频屏蔽来绕过滤波器。 这对于其中金属射频屏蔽定位靠近滤波器的小尺寸装置尤其是一个问题。 通过使用位于滤波器和RF屏蔽之间的铁氧体埋入元件,由混合器产生的一些不期望的谐波可以被散热。