Title :
A Compact Dual-Band Rectenna Using Slot-Loaded Dual Band Folded Dipole Antenna
Author :
Niotaki, Kyriaki ; Sangkil Kim ; Seongheon Jeong ; Collado, Ana ; Georgiadis, Anthimos ; Tentzeris, Manos M.
Author_Institution :
Dept. of Microwave Syst. & Nanotechnol., Centre Tecnol. de Telecomunicacions de Catalunya (CTTC), Castelldefels, Spain
Abstract :
A compact dual-band rectenna operating at 915 MHz and 2.45 GHz is presented. The rectenna consists of a slot-loaded dual-band folded dipole antenna and a dual-band rectifier. The length of the proposed antenna is only 36.6% of the half-wavelength (λ0/2) dipole antenna at 915 MHz while keeping dual-band property at 915 MHz and 2.45 GHz. The rectifier circuit is optimized for low input power densities using harmonic balance (HB) simulation. The efficiencies of the rectifier are evaluated with both single- and dual-frequency input signals. The measured results show an efficiency of 37% and 30% at 915 MHz and at 2.45 GHz when illuminated by a microwave signal of available power of -9 dBm for a load resistor of 2.2 k Ω.
Keywords :
UHF antennas; dipole antennas; multifrequency antennas; rectennas; slot antennas; compact dual-band rectenna; dual-band rectifier; dual-frequency input signals; efficiency 30 percent; efficiency 37 percent; frequency 2.45 GHz; frequency 915 MHz; half-wavelength dipole antenna; harmonic balance simulation; low input power densities; microwave signal; rectifier circuit; single-frequency input signals; slot-loaded dual band folded dipole antenna; Antenna measurements; Dipole antennas; Dual band; Frequency measurement; Rectennas; Slot antennas; Wireless communication; Dipole antenna; dual-band rectenna; dual-band rectifier; energy harvesting; wireless power transmission;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2294200
