Next Article in Journal
A New Seven-Segment Profile Algorithm for an Open Source Architecture in a Hybrid Electronic Platform
Previous Article in Journal
Fractional Differential Generalization of the Single Particle Model of a Lithium-Ion Cell
Open AccessArticle

Novel L-Slot Matching Circuit Integrated with Circularly Polarized Rectenna for Wireless Energy Harvesting

1
Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
2
Microelectronics Department, Electronics Research Institute, Giza 12622, Egypt
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(6), 651; https://doi.org/10.3390/electronics8060651
Received: 7 May 2019 / Revised: 3 June 2019 / Accepted: 6 June 2019 / Published: 10 June 2019
Radio frequency (RF) power harvesting allows wireless power delivery concurrently to several remote RF devices. This manuscript presents the implementation of a compact, reliable, effective, and flexible energy harvesting (EH) rectenna design. It integrates a simple rectifier circuit with a circularly polarized one-sided slot dipole antenna at 2.45 GHz Industrial, Scientific, Medical (ISM) frequency band for wireless charging operation at low incident power densities, from 1 to 95 μ W/cm 2 . The rectenna structure is printed on a single layer, low cost, commercial FR4 substrate. The integration of the rectifier and antenna produces a low-profile and high performance circularly polarized rectenna. In order to maximize the system efficiency, the matching circuit introduced between the rectifier and antenna is optimized for a minimum number of discrete components and it is constructed using multiple of L-slot defects in the ground plane. For a given input power of 6 dBm intercepted by the circularly polarized antenna with 3 dBi gain, the peak RF-DC (radio frequency-direct current) conversion efficiency is 59.5 % . The rectenna dimensions are 41 × 35.5 mm 2 . It is demonstrated that the output power from the proposed rectenna is higher than the other published designs with a similar antenna size under the same ambient condition. Thanks to its compact size, the proposed rectenna finds a range of potential applications for wireless energy charging. View Full-Text
Keywords: circular-polarized; energy harvesting; rectenna; rectifier; wireless charging circular-polarized; energy harvesting; rectenna; rectifier; wireless charging
Show Figures

Figure 1

MDPI and ACS Style

Mansour, M.M.; Kanaya, H. Novel L-Slot Matching Circuit Integrated with Circularly Polarized Rectenna for Wireless Energy Harvesting. Electronics 2019, 8, 651.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop