Title :
Design and experiments of a high-conversion-efficiency 5.8-GHz rectenna
Author :
McSpadden, James O. ; Fan, Lu ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
12/1/1998 12:00:00 AM
Abstract :
A high-efficiency rectenna element has been designed and tested at 5.8 GHz for applications involving microwave-power transmission. The dipole antenna and filtering circuitry are printed on a thin duroid substrate. A silicon Schottky-barrier mixer diode with a low breakdown voltage is used as the rectifying device. The rectenna element is tested inside a waveguide simulator and achieves an RF-to-DC conversion efficiency of 82% at an input power level of 50 mW and 327 Ω load. Closed-form equations are given for the diode efficiency and input impedance as a function of input RF power. Measured and calculated efficiency results are in good agreement. The antenna and circuit design are based on a full-wave electromagnetic simulator. Second harmonic power levels are 21 dB down from the fundamental input power
Keywords :
dipole antennas; electric impedance; equivalent circuits; microstrip antennas; microwave power transmission; rectifying circuits; solid-state rectifiers; 5.8 GHz; 50 mW; 82 percent; RF-to-DC conversion efficiency; Si; Si Schottky-barrier mixer diode; closed-form equations; diode efficiency; dipole antenna; filtering circuitry; full-wave electromagnetic simulator; high-conversion-efficiency rectenna; input RF power; input impedance; low breakdown voltage; microwave-power transmission; printed rectenna element design; thin duroid substrate; waveguide simulator; Circuit simulation; Circuit testing; Dipole antennas; Electromagnetic waveguides; Equations; Filtering; Microwave devices; Rectennas; Schottky diodes; Silicon;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
