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本文提出了一种可重构交叉连接的无线功率收发器，用于双向设备到设备（D2D）充电，解决了传统无线充电依赖交流电源而D2D充电受限于电池能量的问题，实现了78.1%的总效率。
Synopsys Macau, Macau, China 3 Instituto Superior Técnico/Universidade de Lisboa, Lisbon, Portugal 1 2 Wireless power transfer (WPT) via inductive coupling is a convenient way to charge power-starved portable/wearable devices. Recently, device-to-device (D2D) wireless charging was demonstrated [1,2], which expands the range of WPT applications. Different from the traditional wireless charging, which obtains its energy from the AC mains and has virtually unlimited energy, the D2D charging sources power from an energy-constrained battery. Therefore, achieving the maximum-efficiency transfer is a key design issue. A zero-voltage-switching (ZVS) Class-φ2 receiver with maximum efficiency tracking, but using several off-chip passives, was designed in [1] to improve the rectifier and coupling-link efficiencies for unidirectional D2D wireless charging. In [2], a reconfigurable wireless-power transceiver (TRX) with the maximum-current charging mode was proposed to
Fangyu Mao1, Yan Lu1, Seng-Pan U1,2, Rui P. Martins1,3
University of Macau, Macau, China