Patent ID: 7123070
Filing Date: 2006-10-17
Classification: H03H

Abstract:
1. A phase compensator for in-phase (I) and quadrature (Q) signals for a communications receiver, said I signal having a positive (I+) and negative (I−) differential signals, said Q signal having a positive (Q+) and negative (Q−) differential signals, comprising: a first resistive component having a first input node and a first output node, said first input node being coupled to said I+; a second resistive component having a second input node and a second output node, said second input node being coupled to said Q+; a third resistive component having a third input node and a third output node, said third input node being coupled to said I−; a fourth resistive component having a fourth input node and a fourth output node, said fourth input node being coupled to said Q−; a first reactive component connecting between said first input node and said second output node; a second reactive component connecting between said second input node and said third output node; a third reactive component connecting between said third input node and said fourth output node; a fourth reactive component connecting between said fourth input node and said first output node, wherein a phase-shifted I+ is generated at said first output node, a phase-shifted Q+ is generated at said second output node, a phase-shifted I− is generated at said third output node and a phase-shifted Q− is generated at said fourth output node.