In response to the problems of energy transmission interference and low signal transmission rate in the signal channel of the wireless energy and signal single-coupled channel transmission system, this paper proposes a wireless energy and signal synchronous transmission method that can realize half-duplex. This method utilizes the principle of Amplitude Shift Keying (ASK) to modulate the signal at the signal transmitting end and injects it into the energy transmission channel in series. The energy side adopts the LCC-S compensation topology to stabilize the output voltage when the load varies within a certain range, while the signal side adopts the dual LCC topology for signal transmission. By analyzing the circuit structures in the energy transmission and signal transmission channels, the interference characteristics of the system parameters on the energy transmission and energy to signal are obtained. Finally, the performance of the system is verified by an experimental prototype, which realizes 190W wireless energy and signal transmission with a transmission efficiency greater than 80%.