Title
Triple-Band Single-Layer Rectenna For Outdoor Rf Energy Harvesting Applications
Abstract
A triple-band single-layer rectenna for outdoor RF energy applications is introduced in this paper. The proposed rectenna operates in the frequency bands of LoRa, GSM-1800, and UMTS-2100 networks. To obtain a triple-band operation, a modified E-shaped patch antenna is used. The receiving module (antenna) of the rectenna system is optimized in terms of its reflection coefficient to match the RF-to-DC rectifier. The final geometry of the proposed antenna is derived by the application of the Moth Search Algorithm and a commercial electromagnetic solver. The impedance matching network of the proposed system is obtained based on a three-step process, including the minimization of the reflection coefficient versus frequency, as well as the minimization of the reflection coefficient variations and the maximization of the DC output voltage versus RF input power. The proposed RF-to-DC rectifier is designed based on the Greinacher topology. The designed rectenna is fabricated on a single layer of FR-4 substrate. Measured results show that our proposed rectenna can harvest RF energy from outdoor (ambient and dedicated) sources with an efficiency of greater than 52%.
Year
DOI
Venue
2021
10.3390/s21103460
SENSORS
Keywords
DocType
Volume
RF energy harvesting, rectenna, moth search algorithm, antenna optimization, RF-to-DC rectifier, triple-band operation, Greinacher voltage doubler, impedance matching
Journal
21
Issue
ISSN
Citations 
10
1424-8220
1
PageRank 
References 
Authors
0.39
0
7