Design and simulation of a new wireless power transfer circuit with a single-stage regulating rectifier for flexible sensor patches

Demystifying Regulating Active Rectifiers for Energy Harvesting Systems: A Tutorial Assisted by Verilog-A Models

“…The one-stage regulation was adopted in several works among the state-of-the-art of EH PMUs that work under resonance conditions [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26]. The selfregulating rectifier solution allows avoiding the use of the post-regulation stage and, as a consequence, increasing the PCE of the entire PMU.…”

“…The second category is defined by those works that employ the R 3 1X and 0X topology analyzed in Section IV [17], [24], [26]. Similarly, in [13], it is reported a self-regulated reconfigurable rectifier for inductive power-links that operates in Voltage Mode (VM) or in Current Mode (CM) taking into account a source ascribed as LC-tank.…”

“…[18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32]. Battery charging via WPT is an attractive solution because it can deliver a wide range of power and helps the devices to be water-/dust-proof.…”

“…WPT is mainly implemented using inductive transfer [4], [5], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [22], [23], [24], [26], [28], [29], [31], [33], [34], [35], [36], [37], [38], [39], [40], [41] and, more recently, ultrasound waves [1], [3], [30], [32], [42]. Furthermore, also microwave radiation WPT can provide very high efficiency and a wide propagation area when used in open air and is widely adopted for RFID.…”

“…Therefore, the regulating active rectifier (RAR) scheme depicted in Fig. 2 has been introduced in literature, where, thanks to an additional feedback control loop, the regulation of the output voltage is included in the AR to achieve higher power conversion efficiency while reducing the chip area [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26]. Although exiled from the proposed topic, is worth to mention that the regulation of the output voltage can be achieved also at the TX level of the WPT [37], [38], [39], [41], [43].…”