Decoupling Design of Magnetic Coupling Communication RF Link for Wireless Power Transfer System
To meet the decoupling requirements of the power transmission link and communication link in the wireless power and data simultaneous transmission system,based on the spatial decoupling of DD communication coil and power transmission coil,the integrated design of filtering feeding network and coil antenna is carried out,which improves the passband impedance matching characteristics and out of band suppression ability of the communication link,and further introduces the bandstop filter network to enhance the frequency domain decoupling with power transmission coil.When the coupling distance is 30 mm,the hardware of magnetic coupling communication filtering feeding antenna with the same aperture as 167 kHz wireless power transmission coil antenna is built,and the-3 dB passband bandwidth of 4 MHz is realized at the center frequency of 14.8 MHz.Compared with DD coil antenna,the decoupling antenna system improves the suppression ability of wireless power transmission signal by 85 dB.
magnetic couplingwireless power and data simultaneous transmissiondecouplingDD coil
国家科技期刊平台
NSTL
万方数据
维普
