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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 : 10 / 246 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ÈÞ´ëÇü RFID ¸®´õ¿ë ¼ÒÇü ÁØ-¾ß±â ¾ÈÅ׳ª ¼³°è
¿µ¹®Á¦¸ñ(English Title) Design of a compact quasi-Yagi antenna for portable RFID reader
ÀúÀÚ(Author) ÀÌÁ¾ÀÍ   ¿©ÁØÈ£   ¹é¿î¼®   Jong-Ig Lee   Junho Yeo   Woon-Seok Baek  
¿ø¹®¼ö·Ïó(Citation) VOL 20 NO. 01 PP. 0015 ~ 0021 (2016. 01)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â UHF ´ë¿ª ÈÞ´ëÇü RFID ¸®´õ¿ë ¼ÒÇü ÁØ-¾ß±â ¾ÈÅ׳ª ¼³°è ¹æ¹ý¿¡ ´ëÇØ ¿¬±¸ÇÏ¿´´Ù. ¾ÈÅ׳ª´Â À¯Àüü ±âÆÇ¿¡ ÀμâµÈ ´ÙÀÌÆú Åõ»ç±â¿Í ¹Ý»ç±â·Î ÀÌ·ç¾îÁö¸ç ¸¶ÀÌÅ©·Î½ºÆ®¸³ ¼±·Î·Î ±ÞÀüµÈ´Ù. ¾ÈÅ׳ª¸¦ ¼ÒÇüÈ­Çϱâ À§ÇØ ´ÙÀÌÆú°ú ¹Ý»ç±â¸¦ ±¸ºÎ¸®°í, ±ÞÀü ¸¶ÀÌÅ©·Î½ºÆ®¸³ ¼±·Î¿Í ÄÚÇ÷¡³Ê½ºÆ®¸³ ¼±·Î °£ ¹ß·éÀº ÄÚÇ÷¡³Ê½ºÆ®¸³ ¼±·Î¿¡ ³»ÀåÇüÀ¸·Î ±¸¼ºÇÏ¿´´Ù. Á¦¾ÈµÈ ¾ÈÅ׳ª ±¸Á¶ÀÇ ÆĶó¹ÌÅ͵éÀÌ ¾ÈÅ׳ª Ư¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ°í UHF RFID¿ë ÁÖÆļö ´ë¿ª(902—928 MHz)¿¡ ÀûÇÕÇϵµ·Ï ÆĶó¹ÌÅÍ °ªµéÀ» Á¶Á¤ÇÏ¿´´Ù. Á¦ÀÛµÈ ¾ÈÅ׳ªÀÇ Å©±â´Â 70 mm ¡¿75mmÀÌ°í, Ư¼ºÀ» ½ÇÇèÇÑ °á°ú VSWR < 2ÀÎ ´ë¿ªÀº 892—942 MHz, UHF RFID ´ë¿ª ³» À̵æ > 3.5 dBi, ÀüÈĹæºñ > 6.6 dB À̾ú´Ù.
¿µ¹®³»¿ë
(English Abstract)
In this paper, we considered a design method of a compact quasi-Yagi antenna for portable UHF RFID readers. The antenna consists of a dipole driver and a reflector printed on a dielectric substrate, and it is fed by a microstrip line. In order to reduce the antenna size, the dipole and reflector are bent and the balun between the feeding microstrip line and coplanar strip (CPS) line is integrated within the CPS line. 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 UHF RFID band (902—928 MHz). The size of the fabricated antenna is 70 mm ¡¿75 mm, and the experiment results reveal a frequency band of 892—942 MHz for a voltage standing wave ratio < 2, a gain > 3.5 dBi, and a front-to-back ratio > 6.6 dB over the frequency band for UHF RFID.
Å°¿öµå(Keyword) ÁØ-¾ß±â ¾ÈÅ׳ª   RFID ¾ÈÅ׳ª   ÈÞ´ëÇü RFID ¸®´õ   ¼ÒÇü¾ÈÅ׳ª   UHF ¾ÈÅ׳ª   quasi-Yagi antenna   RFID antenna   portable RFID reader   compact antenna   UHF antenna  
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