Design of rectenna series-association circuits for radio frequency energy harvesting in CMOS FD-SOI 28 nm

作者：Hamani Abdelaziz^*; Allard Bruno; Tan Phu Vuong; Yagoub Mustapha C E; Touhami Rachida

来源：IET Circuits, Devices and Systems, 2018, 12(1): 40-49.

DOI：10.1049/iet-cds.2017.0119

• rectennas
• energy harvesting
• CMOS integrated circuits
• maximum power point trackers
• passive networks
• radiofrequency integrated circuits
• silicon
• elemental semiconductors
• silicon-on-insulator
• series-connected rectenna series-association circuit
• radiofrequency energy harvesting
• CMOS FD-SOI technology
• post-layout simulation
• maximum power point
• MPP
• passive bypass circuit
• size 28 nm
• power 14 muW
• power 5 muW
• power 7 muW
• efficiency 10 percent
• efficiency 20 percent
• Si

Series-connected rectenna associations are proposed to improve the harvesting performance of conventional rectenna circuits by recovering power from different directions. With an available input power of -20 dBm, post-layout simulations evaluated the total output power of four series-connected rectennas designed in Complementary Metal Oxide Semiconductor Fully Depleted Silicon On Insulator (CMOS FD-SOI) 28 nm technology, to 14 mu W at maximum power point (MPP), while the post-layout simulation of a single rectenna yields 5 mu W at the same input power level. However, the rectenna association performance may be significantly degraded when dealing with different input power levels among rectennas. Therefore, a passive bypass circuit has been added at the output of the series association to short-circuit the weakest rectenna. The proposed design is cost-effective since there is a negligible silicon penalty and no additional power losses. In the designed four series-connected rectenna association, the total output power is 7 mu W at MPP with the bypass circuit when the strongest and the weakest rectennas receive -20 and -35 dBm, respectively. Also, thanks to the bypass circuit, the efficiency of the rectenna association and the ratio of maximum achieved power are improved by, respectively, 10 and 20%.

• 出版日期2018-1