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

fYear

2014

fDate

26-29 July 2014

Firstpage

112

Lastpage

115

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 27^odown tilt and 21^o 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-4355-5

Type

conf

DOI

10.1109/APCAP.2014.6992426

Filename

6992426