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http://dx.doi.org/10.5515/KJKIEES.2008.19.4.411

Miniaturization of Circularly Polarized Microstrip Antenna for RFID Portable Reader at 900 MHz Band  

Kang, Min-Sik (Department of Radio Science & Engineering, Chungbuk National University)
Choi, Ik-Guen (School of Electrical & Computer Engineering, Chungbuk National University)
Publication Information
Abstract
This paper presents the miniaturization of circularly polarized microstrip patch antenna for UHF-band RFID portable reader. The proposed antenna has a group of four I-slots on a conventional corner-truncated square microstrip patch and it is shown that the antenna size is reduced compared to the antenna without I-slots. A 76 mm by 76 mm small antenna with four I-slots is fabricated with 6.4 mm thick FR4 substrate and its 10 dB return loss bandwidth, the gain and the axial ratio are measured to be $938{\sim}975\;MHz$, $-0.88{\sim}-2\;dBi$, and $3.27{\sim}13.21\;dB$ within the 10 dB return loss bandwidth, respectively.
Keywords
RFID Reader Antenna; Microstrip Antenna; Circular Polarized; Miniaturization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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