公开(公告)号：US07542521B2

公开(公告)日：2009-06-02

申请号：US11226045

申请日：2005-09-14

申请人： Byoung Gun Choi ,  Seok Bong Hyun ,  Geum Young Tak ,  Hee Tae Lee ,  Seong-Su Park ,  Chul Soon Park

发明人： Byoung Gun Choi ,  Seok Bong Hyun ,  Geum Young Tak ,  Hee Tae Lee ,  Seong-Su Park ,  Chul Soon Park

IPC分类号： H03K9/00

CPC分类号： H03D7/1441 ,  H03D7/1491 ,  H03D7/165 ,  H03D2200/0084

摘要： Provided is a direct-conversion frequency mixer for down converting a radio frequency (RF) signal into a baseband signal, in which a single phase RF signal and a quadrature location oscillation (quadrature LO) signal are used to generate the baseband signal, the frequency mixer comprising a first frequency mixing unit that uses quadrature LO signals having respective phases of 0 degrees and 180 degrees to directly down-convert the single phase RF signal into the in-phase baseband signal, and a second frequency mixing unit that uses quadrature LO signals having respective phases of 90 degrees and 270 degrees to directly down-convert the single phase RF signal into the quadrature-phase baseband signal, whereby drains and sources of the transistor for receiving the quadrature LO signal and the transistor for receiving the RF signal are connected in common, thus enabling low power source voltage driving.

摘要翻译： 提供了一种用于将射频（RF）信号下变频为基带信号的直接转换混频器，其中使用单相RF信号和正交位置振荡（正交LO）信号来产生基带信号，频率 混频器，其包括使用具有0度和180度的相位的正交LO信号的第一频率混合单元，以将单相RF信号直接下变频为同相基带信号;以及第二混频单元，其使用正交LO信号 具有90度和270度的各个相位以将单相RF信号直接下变频为正交基带信号，由此连接用于接收正交LO信号的晶体管的漏极和源极以及用于接收RF信号的晶体管被​​连接 因此能够实现低电源电压驱动。