Differential Dickson voltage multiplier with matching network for radio frequency harvester

This paper presents the design and implementation of the differential Dickson voltage multiplier with a matching network which is used in the radio frequency (RF) energy harvester at GSM frequency band. The proposed RF energy harvester consists of a matching network and a Dickson rectifier. Those circuits are designed and simulated with standard TSMC 0.18 μm 1P6M CMOS process. The matching network is used not only to obtain the maximum power deliver from antenna to the RF-DC rectifier, but also to have the maximum conversion efficiency. In the proposed differential Dickson voltage multiplier, a native MOSFET is considered in implementing the multiplier with low threshold voltage, and a modified Dickson voltage multiplier with differential schematic is used to enhance the performance of the Dickson voltage multiplier. According to the simulated results, the conversion efficiency, input return loss, and output voltage are 28.83%, -47.285 dB, and 1.5 V, respectively, at a load impedance of 239 kΩ, an input power of -10 dBm, and in GSM frequency band.