Title :
A shaped beam antenna array for ultra high frequency radio frequency identification reader applications
Author :
Ziwei Li ; Xin Zhang
Author_Institution :
Inst. of Inf. & Commun. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
In this paper, design of a shaped beam linear antenna array for RFID reader application in UHF frequency band of 902-928MHz was presented. Aperture-coupled patch configuration was adopted as array element. Fourier Series Method for antenna synthesis was used to calculate amplitude and phase of each corresponding antenna element, thus realizing the predefined pattern by feeding network of power divider. Measured reflection coefficient of antenna array was less than -15dB in 902-928MHz and gain at center frequency was about 9.8dBi. Radiation pattern had a 27odown tilt and 21o half power beam width in the main beam, which was close to the pre-defined pattern.
Keywords :
Fourier series; UHF antennas; antenna arrays; antenna radiation patterns; aperture antennas; microstrip antennas; power dividers; radiofrequency identification; shaped beam antennas; Fourier series method; RFID reader application; UHF frequency; antenna element; antenna synthesis; aperture-coupled patch configuration; array element; bandwidth 902 MHz to 928 MHz; power divider feeding network; radiation pattern; radio frequency identification reader applications; reflection coefficient; shaped beam linear antenna array; ultra high frequency; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; Finite element analysis; Power dividers; Radiofrequency identification; linear array; power divider; reader antenna; shaped beam;
Conference_Titel :
Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-4355-5
DOI :
10.1109/APCAP.2014.6992426
