Highly Efficient Compact Rectenna for Wireless Energy Harvesting Application

Abstract

First Priceof the IEEE-MTT IMS Wireless Energy Harvesting Student Design CompetitionInternational audienceThe inaugural Student Wireless Energy Harvesting Design Competition was held during the 2012 IEEE Microwave Theory and Techniques Society (MTT-S) International Microwave Symposium (IMS) in Montreal, Canada. The aim of the competition was to introduce students to the concept and implementation of efficient wireless energy harvesting (WEH). The participants were asked to design a WEH device at 900 MHz frequency. In order to encourage students to have novelty in their designs, a weighting factor was introduced and considered in the final score calculation of each participant by the judges of the competition. The efficiency figure of merit (Eff), also known as FoM, used as the judging criteria was the output DC power, defined as Pout, and measured in a 100 or 1000 ohm load, divided by the total weight of the circuit, defined as W, and area of the whole circuit (calculated as the square of the largest dimension, defined as D, of WEH device

Radio Frequency Energy Harvesting Sources

“…Andrenko [46], reported outdoor RF spectrum survey results conducted in the shopping square and residential area in Shunde, China. Mimis [47] presented results of indoor RF spectrum survey that was carried out in a variety of residential locations around the city of Bristol, UK between frequencies of 500 MHz and 6 GHz. In all these reported studies, there is a general conclusion that the maximum RF power density can be obtained from GSM 900/18000 bands [17, [42][43][44][45][46][47].…”

Wireless Energy Harvesting in Two-Way Network Coded Cooperative Communications: A Stochastic Approach for Large Scale Networks

“…In addition, the relays are capable of EMR EH using a separate EMR Harvesting System (EHS) with a rectifying antenna (rectenna), which is a special type of antenna that is used to convert RF energy into direct current electricity with efficiency [11]. A relay is able to harvest the EMR energy that emits from the transmissions of the sources, of the other relays and of its own transmissions.…”

“…The mean value of the power fading coefficient is µ = 1 and the transmit power is P t = 75 mW, while the power for the reception mode is P r = 100 mW. The conversion efficiency of the EHS is = 0.1 [11], while the intensities of the PPPs are λ 1 = λ 2 = 0.4 and λ R = 0.5. Finally, the timeslot duration and the initial level of a relay's battery are t s = 1 s and L I = 1000 J, respectively.…”

Distributed precoding for wireless information and power transfer in MIMO DF relay networks

“…WPT is not a new concept but becomes a hot topic recently with the power to power all the ubiquitous battery-harassed wireless devices [2] [3]. With the great progress of rectifying antennas (rectennas) for efficient RF-to-DC conversion [4], SWIPT has become a new research field that attracts increasing attention [5]- [10].…”