Decoder for wireless charging transmitter and wireless charging transmitter using the same

A decoder for a wireless charging transmitter and a wireless charging transmitter using the same are provided in the present invention. In order to adapt the wide range of the received signal from thewireless charging receiver, which usually results in the error of the decode, the feedback circuit of the wireless charging transmitter is changed, so that the signal in a certain swing is amplifiedby an original gain, and the signal out of the certain swing is amplified by a limited gain. Therefore, the amplified signal is able to show the characteristic of the original received signal. Thus, the accuracy of decoding is increased. 本发明关于一种无线充电发射器解码电路以及使用其的无线充电发射器，此无线充电发射解码电路为了适应接收器所输出的编码接收信号的电压范围过大，导致解码常失败的情况，通过改变放大器的回授电路，将某一摆幅的信号使用原增益，当信号大于上述摆幅，便将增益限制。因此，放大后的信号仍能呈现原有信号的特性，有利于解码成功率。