An integrated RF energy harvester for UHF wireless powering applications

Antena Wideband Planar Bowtie untuk Pemanenan Energi Gelombang Televisi Elektromagnetik Terestrial

“…Pemanfaatan elektromagenetik sebagai sumber energi listrik telah banyak dikembangkan oleh para peneliti. Hal ini didukung oleh semakin majunya teknologi semikonduktor dan efisiensi penggunaan daya pada perangkat teknologi [3]- [5]. Aplikasi teknologi ini dapat menyatukan pengiriman informasi dan energi ke perangakat dalam satu media sehingga meningkatkan efisiensi sistem.…”

Reconfigurable RF Energy Harvester with Customized Differential PCB Antenna

“…This allows for reducing the mismatch power losses due to the power-dependent variation of the input RF-DC converter, thus improving the efficiency of the matching network over a wider PIN range. The impedance matching between the antenna and the converter is designed to account for the parasitic capacitance of the pad CPAD, and the ohmic power losses due to the bonding parasitic resistance, RBond, and inductance LBond, which are included into the input impedance model, as shown in Figure 3, [9]. Furthermore, the reconfigurable circuit solution devised for the RF-DC converter allows for minimizing the efficiency reduction due to the RD variation caused by the voltage regulator operation.…”

A review of RF energy harvesting systems in India

“…Here, by using only a single pole double throw switch the polarization switching is achieved and a simple design of the DC bias network is adopted. An RFE scavenging system comprising of printed differential antenna is presented in [12] for wireless powering applications in the UHF band.…”

“…A voltage doubler is designed using Dickson Multiplier topology by Mahima et al in [3]. The RFE is converted into DC using a differential reconfigurable configuration which improves the sensitivity to -16dBm and efficiency to 60% at 840 MHz to 975 MHz is discussed in [12]. RFE harvesting system with a single wideband 377 E shaped patch antenna, a Pi matching network and a 7 stage voltage doubler circuit designed at the downlink radio frequency range of GSM900 band is discussed in [15].…”