Title :
Compact 5.8-GHz Rectenna Using Stepped-Impedance Dipole Antenna
Author :
Tu, Wen-Hua ; Hsu, Shih-Hsun ; Chang, Kai
Author_Institution :
Texas A&M Univ., College Station
fDate :
6/29/1905 12:00:00 AM
Abstract :
This letter describes a compact 5.8-GHz rectenna using a stepped-impedance dipole antenna. In comparison to the conventional uniform half-wavelength dipole antenna, the stepped-impedance dipole antenna shows a 23% length reduction. This stepped-impedance dipole antenna is then used to receive the microwave power for a rectenna. The rectenna shows a maximum conversion efficiency of 76% at 5.8 GHz with a load resistance of 250 Omega. Furthermore, the conversion efficiency is better than 67% from 5.725 to 5.875 GHz, which covers the entire 5.8-GHz ISM band.
Keywords :
dipole antennas; microwave antennas; rectennas; compact rectenna; conversion efficiency; frequency 5.725 GHz to 5.875 GHz; microwave antennas; resistance 250 ohm; stepped-impedance dipole antenna; Capacitors; Dipole antennas; Impedance; Microstrip antennas; Microwave antenna arrays; Microwave antennas; Patch antennas; Receiving antennas; Rectennas; Schottky diodes; Dipole antenna; rectenna; stepped-impedance;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.898555
