Title :
A high-efficiency dual-frequency rectenna for 2.45- and 5.8-GHz wireless power transmission
Author :
Suh, Young-Ho ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
7/1/2002 12:00:00 AM
Abstract :
A dual-frequency printed dipole rectenna has been developed for the wireless power transmission at 2.45- and 5.8-GHz (industrial-scientific-medical bands). For operating at dual band, a new uniplanar printed dipole antenna is developed using a coupling method. A GaAs Schottky barrier diode analysis is performed, and a proper device requirement is discussed to have high RF-to-dc conversion efficiencies at both frequencies. A novel coplanar stripline (CPS) low-pass filter integrated with two additional open-ended T-strip CPS bandstop filters effectively block higher order harmonics generated from the diode. The measured conversion efficiencies achieved at free space are 84.4 and 82.7% at 2.45 and 5.8 GHz, respectively
Keywords :
Schottky diodes; band-stop filters; dipole antennas; harmonics suppression; low-pass filters; microstrip antennas; microwave power transmission; multifrequency antennas; strip line filters; 2.45 GHz; 5.8 GHz; 82.7 percent; 84.4 percent; GaAs; GaAs Schottky barrier diode; ISM band; RF-to-DC conversion efficiency; coplanar stripline low-pass filter; coupling method; dual-band operation; dual-frequency printed dipole rectenna; harmonic suppression; open-ended T-strip CPS bandstop filter; wireless power transmission; Couplings; Dipole antennas; Dual band; Gallium arsenide; Low pass filters; Performance analysis; Power transmission; Rectennas; Schottky barriers; Schottky diodes;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2002.800430
