| 摘要 |
A gain amplifier with quadrature phase compensation circuit is disclosed. The gain amplifier for in-phase ("I") and quadrature ("Q") signals comprises a first resistive component having a first input node ("Node 1 ") and a first output node ("Node 5 "), with the Node 1 coupled to the I+ differential signal, a second resistive component having a second input node ("Node 3 ") and a second output node ("Node 7 "), with the Node 3 coupled to the Q+ signal, a third resistive component having a third input node ("Node 2 ") and a third output node ("Node 6 "), with the Node 2 coupled to the I- signal, a fourth resistive component having a fourth input node ("Node 4 ") and a fourth output node ("Node 8 "), with the Node 4 coupled to said Q- differential signal, a first reactive component connecting between the Node 1 and the Node 7 , a second reactive component connecting between the Node 3 and the Node 6 , a third reactive component connecting between the Node 2 and the Node 8 , a fourth reactive component connecting between the Node 4 and the Node 5 . Then phase-shifted I+ is generated at the Node 5 , a phase-shifted Q+ is generated at the Node 7 , a phase-shifted I- is generated at the Node 6 and a phase-shifted Q- is generated at the Node 8.
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