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(Design of RFID Reader Antenna Using Two Orthogonally Oriented 1x2 Sub-Arrays at 433 MHz)  

Kim Jong-Sung (Department of Multimedia Engineering, Kyungsung University)
Park Seung-Mo (Mutronics Inc)
Choi Won-Kyu (Electronics and Telecommunication Research Institute)
Seong Nak-Seon (Electronics and Telecommunication Research Institute)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.9, 2005 , pp. 97-100 More about this Journal
Abstract
An orthogonal antenna is presented for reader application of radio frequency identification (RFID) at 433 MHz. Two 1x2 sub-arrays are orthogonally placed on a ground plane and two different feeding networks are applied to control horizontal and vertical radiation current flows for each sub-array, respectively. Inverted-F structures are used as radiation elements and can generate two linear polarizations by relative current distribution of radiators forming sub-arrays. Antenna gains are 2.7 and 0.4 dBi and isolation between two input ports is less than 25dB.
Keywords
RFID; Reader; Tag; Inverted-F Antenna; Orthogonal; Polarization;
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