Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 12, Issue -, Pages 1634-1637Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2013.2294200
Keywords
Dipole antenna; dual-band rectenna; dual-band rectifier; energy harvesting; wireless power transmission
Funding
- Spanish Ministry of Economy and Competitiveness
- FEDER funds [TEC2012-39143]
- EU Marie Curie [FP7-PEOPLE-2009-IAPP 251557]
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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-wave-length (lambda(0)/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 Omega.
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