Title :
Numerical Synthesis of Dual-Band Reflectarray Antenna for Optimum Near-Field Radiation
Author :
You, Bai-Qiang ; Liu, Yu-Xi ; Zhou, Jian-Hua ; Chou, Hsi-Tseng
Author_Institution :
Dept. of Electron. Eng., Xiamen Univ., Xiamen, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
A dual-band reflectarray antenna with a double layer, employing concentric square rings as reflecting elements, is proposed. With a procedure of the steepest decent method (SDM), the impressed phases of the reflecting elements are synthesized for the proposed antenna to radiate an optimum field pattern in the near zone of array aperture. The reflectarray antenna is designed for two frequency bands, covering 915 MHz and 2.4 GHz, which both can be used in RFID applications.
Keywords :
antenna radiation patterns; gradient methods; multifrequency antennas; reflectarray antennas; RFID applications; SDM; array aperture; concentric square rings; double layer; dual-band reflectarray antenna; frequency 2.4 GHz; frequency 915 MHz; numerical synthesis; optimum field pattern; optimum near-field radiation; reflecting elements; steepest decent method; Antenna feeds; Arrays; Dual band; Microstrip; Reflector antennas; Dual-band; near-field focus; pattern synthesis; reflectarray antenna (RA); steepest decent method (SDM);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2204229
