In this paper, a dual-band printed rectenna of compact size (38×24) mm2 has been designed and analyzed to work at GSM frequency of 900 MHz and WiFi frequency of 2.4 GHz for wireless power transmission. The purpose of this design is to harvest energy at two different frequencies to increase the probability of receiving power from ambient field. The antenna part of this rectenna is printed on FR4 substrate and has the shape of meander line with two arms for double-band operation. The rectifier part of this rectenna consisted of impedance matching network, AC-to-DC conversion circuit and a DC filter. The design and simulation results of this rectenna have been done with the help of CST 2019 and ADS 2018 software packages. At a received input power of -30 dBm and a load resistance of 1900 Ω, the maximum conversion efficiencies obtained by this rectenna at frequencies of 900 MHz and 2.4 GHz are found as 23% and 42% respectively.

Topics
Rectifier, Antennas, Radiowave and microwave technology, Wireless power transmission
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