发明授权
US07266357B2 Reduced local oscillator feedthrough quadrature image reject mixer
有权
减少本地振荡器馈通正交图像拒绝混频器
- 专利标题: Reduced local oscillator feedthrough quadrature image reject mixer
- 专利标题(中): 减少本地振荡器馈通正交图像拒绝混频器
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申请号: US10436191申请日: 2003-05-12
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公开(公告)号: US07266357B2公开(公告)日: 2007-09-04
- 发明人: Arya Reza Behzad
- 申请人: Arya Reza Behzad
- 申请人地址: US CA Irvine
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: US CA Irvine
- 主分类号: H04B1/10
- IPC分类号: H04B1/10
摘要:
An RF communications circuit having a reduced LO feed through image reject mixer is disclosed. The image reject mixer includes a quadrature phase transconductance stage coupled to a quadrature phase mixer of a quadrature phase mixer module and an in-phase mixer of an in-phase mixer module. The image reject mixer further includes an in-phase transconductance stage coupled to an in-phase mixer of the quadrature phase mixer module and a quadrature phase mixer of the in-phase mixer module. The output of the quadrature phase mixer and in-phase mixer of the quadrature phase mixer module are cross-coupled to form a quadrature phase local oscillator (LO) output and wherein the output of the quadrature phase mixer and in-phase mixer of the in-phase mixer module are cross-coupled to form an in-phase local oscillator (LO) output.
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