Title :
Optimal Design of an Antenna Array for Energy Harvesting
Author :
Fangyi Xie ; Guo-Min Yang ; Wen Geyi
Author_Institution :
Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai, China
Abstract :
A high-gain, linear polarized microstrip antenna array for energy harvesting at 915 MHz is studied in this letter. The optimization theory for wireless power transmission efficiency has been used to design the feeding network of the antenna array to achieve the maximum power transmission efficiency with a given antenna configuration. As a demonstration, a light emitting diode (LED) is used as the resistive load of the rectifier (a three-stage Dickson charge pump circuit) connected to the antenna array terminal. For a given input power of 10 dBm fed into a circularly polarized transmitting antenna with 6 dBi gain, the maximum distance for lighting the LED is 51 cm.
Keywords :
antenna feeds; electromagnetic wave polarisation; energy harvesting; inductive power transmission; light emitting diodes; microstrip antenna arrays; optimisation; rectifiers; LED; antenna array terminal; circularly polarized transmitting antenna; energy harvesting; feeding network; high-gain microstrip antenna array; light emitting diode; linear polarized microstrip antenna array; maximum power transmission efficiency; optimization theory; rectifier; wireless power transmission efficiency; Antenna measurements; Arrays; Microstrip; Microstrip antenna arrays; Microstrip antennas; Transmitting antennas; Antenna arrays; feeding network; microstrip patches; rectennas; rectifier; transmission efficiency;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2243697
