主要技术内容：Structural Configuration:Please have a look at the Fig. 1 & Fig. 2.Specifications:1. Mid-range separation distance (effective wireless power transfer distance): d = 50.0 cm2. Outer dimension sizes of Tx/Rx coil antenna arrays: 15.4 cm×15.4 cm×2.4 cm (central line length of the rectangular planar sides is W = 15.0 cm)3. System resonant frequency: fr = 19.22 MHz4. Spacing size between any two adjacent elements in the Tx/Rx coil arrays: s = 1.0 cm5. Pitch of parasitic spiral coil put inside: p = 0.5 cm6. Inside passive spiral coil is formed by spinning inward clockwisely from the start point A to the end point B (central point of the outside active loop coil) with equivalent turn number: N = 14.257. Copper wire radii: r0 = 0.2 cm8. Power input port i is made up of a pure voltage source with the magnitude of |V0| = 1.0 V主要技术指标：Results:As shown in Fig. 3, at the resonant frequency of 19.22 MHz, the maximum power transfer efficiencies of the three channels, can attain h331 = 27.4%, h332 = 29.3%, and h333 = 27.7%.Through a combining network ideally realized by a set of lossless phase shifters and transformers as shown in Fig. 4, the total well-combined power transfer efficiency will arrive at around htot = h33 = 84.4%.As depicted in Fig. 5, the curves of all three powers directly fed in Tx coil elements (PSi - PSRi) touch the ones of all three powers dissipated on source internal resistors PSRi respectively at the same resonant frequency of 19.22 MHz, i = 1, 2, 3, which means the results coincide with the maximum power transmission theorem in circuit principles.To further investigate on the robustness of the maximum total power transfer efficiency for the 3 × 3 WPT system, the variation curve of it with the different separation distance from 100.0 cm to 1.0 cm is depicted as in Fig. 6.先进性及成熟度： 上述所示的结构设计与紧凑型具备一定的先进性，目前市场上没有。相关设计正在寻求加工产品化的下游合作伙伴。应用情况及合作方式： 希望成果能够进行转化，并应用于中小功率电子设备产品，相信具备广泛的应用前景。