Investigation of Rectenna Array Configurations for Enhanced RF Power Harvesting

Design Considerations for Radio Frequency Energy Harvesting Devices

“…The problem comes out from the circumstance that, often, a single rectenna is not sufficient to supply the common device operations: the problem of wideband energy harvesting systems arises, and possible solutions could be represented by a multi-antenna system [12]. In this case, each antenna (operating at different frequencies) could have its own rectifier to harvest separately DC power [13].…”

Design of an Efficient Rectifier Circuit for RF Energy Harvesting System

“…A differential microstrip antenna [6] with improved gain for RF energy harvesting was presented by Arrawatia et al The antenna was designed and fabricated for GSM900 band (890-960 MHz) with a gain of 8.5 dBi and peak efficiency of 65.3%. The same group of researcher also proposed a broad band bent triangular omnidirectional antenna [7] for RF energy harvesting. The antenna has a bandwidth of 850MHz to 1.94GHz with a peak efficiency of 60%.…”

Design of an effective energy receiving adapter for microwave wireless power transmission application

“…1,2 A single rectifying antenna may be used in some application scenarios such as the handheld mobile devices, 3,4 while an array of rectifying antennas is usually needed to enhance the receiving power, especially for the ground-to-ground WPT system. [5][6][7][8] Most of the research in this area focuses on discussions of AC-to-DC conversion efficiency, and the concept of the capture efficiency of the energy receiving adapter is usually ignored. Recently, inspired by the metamaterial absorber (MMA), 9,10 a concept of using MMA resonator as an energy collector for electromagnetic energy harvesting has been proposed.…”