Magnetic Resonant Coupling Based Wireless （基于磁谐振耦合的无线）.pdfVIP

/10.5573/JSTS.2062 JOURNALOFSE ICONDUCTORTECHNOLOGYANDSCIENCE,VOL.13,NO.6,DECE BER,2013 Magnetic Resonant Coupling Based Wireless Power Transfer System with In-Band Communication Sun-Hee im, Yong-Seok Lim, and Seung-Jun Lee Abstract—This paper presents a design of a wireless cables, which is more convenient and environment power transfer system based on magnetic resonant friendly [1, 2]. Inductive coupling andresonant coupling coupling technology with in-band wireless havebeentwomainmethods forwirelesspowertransfer communication. To increase the transmission distance [3]. and compensate for the change in the effective An inductively coupled power transfer system has a capacitance due to the varying distance, the proposed pair of coupled coils. At the transmitting side, an system used a loop antenna with a selectable capacitor alternating current flows through a coil, generating a array. Because the increased transmission distance magneticfield.Areceivingcoil,whichiscloseenoughto enables multiple charging, we added a communication the primary coil, picks up the field and generates a protocol operated at the same frequency band to currentto savepower.Accordingtoprevious studies,the manage a network and control power circuits. In effective operatingrangeisusuallylessthan 30 % ofthe order to achieve the efficient bandwidth in both diameter of coils [4]. To communicate between power power transfer mode and communication mode, the transmitters and power receivers, the systems