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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document : 12 / 246 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) RFID ¸®´õ¿ë ±¤´ë¿ª ¿øÆíÆÄ ¾ÈÅ׳ª ¼³°è
¿µ¹®Á¦¸ñ(English Title) Design of a broadband CP antenna for RFID readers
ÀúÀÚ(Author) ÀÌÁ¾ÀÍ   ¿©ÁØÈ£   ¹ÚÁøÅà  Jong-Ig Lee   Junho Yeo   Jin-Taek Park  
¿ø¹®¼ö·Ïó(Citation) VOL 19 NO. 08 PP. 1759 ~ 1764 (2015. 08)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â UHF ´ë¿ª RFID ¸®´õ¿ë ¿øÆíÆÄ ¾ÈÅ׳ª ¼³°è ¹æ¹ý¿¡ ´ëÇØ ¿¬±¸ÇÏ¿´´Ù. ¾ÈÅ׳ª´Â ¿øÇü ¸¶ÀÌÅ©·Î½ºÆ®¸³ ÆÐÄ¡¸¦ ÀÌÁß±ÞÀüÇÏ¿© ¿ì¼±¿øÆíÆĸ¦ ¹ß»ý½ÃÅ°´Â ±¸Á¶ÀÌ´Ù. ÀÌÁß±ÞÀüÀ» À§ÇØ 90µµ ÇÏÀ̺긮µå °áÇձ⸦ ÀÌ¿ëÇÏ¿´´Ù. °áÇÕ±â Ãâ·Â°ú ¿øÇüÆÐÄ¡´Â µ¿¼±À¸·Î ¿¬°áµÇ°í µ¿¼±¿¡ ÀÇÇØ ¹ß»ýµÇ´Â À¯µµ¼º ¸®¾×ÅϽº ¼ººÐÀ» º¸»óÇϱâ À§ÇØ ¿øÇüÆÐÄ¡¿¡ ¸µÇü ½½·ÔÀ» »ðÀÔÇÏ¿´´Ù. Á¦¾ÈµÈ ¾ÈÅ׳ª ±¸Á¶ÀÇ ÆĶó¹ÌÅ͵éÀÌ ¾ÈÅ׳ª Ư¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ°í ±¹³»¸¦ Æ÷ÇÔÇÑ ºÏ¹Ì UHF RFID¿ë ÁÖÆļö ´ë¿ª(902—928 MHz)¿¡ ÀûÇÕÇϵµ·Ï ÆĶó¹ÌÅÍ °ªµéÀ» Á¶Á¤ÇÏ¿´´Ù. ¾ÈÅ׳ª¸¦ Á¦ÀÛÇÏ°í Ư¼ºÀ» ½ÇÇèÇÑ °á°ú VSWR < 2ÀÎ ´ë¿ªÀº 854—993 MHzÀ̾ú´Ù. Á¦ÀÛµÈ ¾ÈÅ׳ª¸¦ »ó¿ë RFID ¸®´õ¿¡ ¿¬°áÇÏ°í ÅÂ±× Àνļº´ÉÀ» Á¡°ËÇÏ¿© ¾çÈ£ÇÑ ¼º´ÉÀ» È®ÀÎÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
In this paper, we considered a design method of a circular polarization (CP) antenna for UHF (ultra high frequency) RFID (Radio Frequency IDentification) readers. The antenna is a dual-fed circular microstrip patch which produces right-handed CP. Quadrature hybrid coupler is used for dual feeding. The outputs of the coupler and circular patch are connected through copper wires, and the inductive reactance produced by the connecting wires is compensated by a ring-shaped slot inserted inside the circular patch. The effects of the geometrical parameters of the proposed antenna on the antenna performance are examined, and the parameters are adjusted to be suitable for the operation in North American UHF RFID band (902—928 MHz), which includes domestic UHF RFID band. The antenna is fabricated, and the experiment results reveal a frequency band of 854—993 MHz for a voltage standing wave ratio < 2. The fabricated antenna is connected to a commercial RFID reader, and it showed a good performance of tag identification.
Å°¿öµå(Keyword) ¿øÆíÆÄ ¾ÈÅ׳ª   RFID ¾ÈÅ׳ª   ¸¶ÀÌÅ©·Î½ºÆ®¸³ ¾ÈÅ׳ª   ÀÌÁß±ÞÀü   ±¤´ë¿ª ¾ÈÅ׳ª   CP antenna   RFID antenna   microstrip antenna   dual-feeding   broadband antenna  
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