Patent ID: 8975965
Filing Date: 2015-03-10
Classification: H03F,H03H

Abstract:
1. A differential signal correction circuit, comprising: a first single-ended-to-differential converter having a first input port, a first output port and a second output port, wherein the first output port is coupled with a first output node, the second output port is coupled with a second output node, the first input port is configured to receive a first input signal, the first single-ended-to-differential converter is configured to convert the first input signal into a first current signal and a second current signal, the first current signal is outputted from the first output port, and the second current signal is outputted from the second output port; a second single-ended-to-differential converter having a second input port, a third output port and a fourth output port, wherein the third output port is coupled with the first output node, the fourth output port is coupled with the second output node, the second input port is configured to receive a second input signal, the second input signal and the first input signal are differential signal pair, the second single-ended-to-differential converter is configured to convert the second input signal into a third current signal and a fourth current signal, the third current signal is outputted from the third output port, and fourth current signal is outputted from the fourth output port; a first load coupled between the first output node and a first power source, wherein the first load is configured to convert a first output current signal collected from the first current signal and the third current signal at the first output node into a first output voltage signal, and the first output voltage signal is fed back to the first single-ended-to-differential converter for phase and gain correction; and a second load coupled between the second output node and a second power source, wherein the second load is configured to convert a second output current signal collected from the second current signal and the fourth current signal at the second output node into a second output voltage signal, and the second output voltage signal is fed back to the second single-ended-to-differential converter for phase and gain correction.