| 摘要 |
The present invention relates to a RFID special tag composed of four grid-type transmission line antenna. The RFID special tag antenna within a 900 MHz UHF network area composed of four grid-type transmission line antenna comprises feeders (10) performing as a passage for a transmission signal from a signal source and existing along the quadrilateral border of the bottom surface of a bi-level structure; feeding pins (11) connecting four emitters formed on the upper surface of the bi-level structure and the feeder (10) formed along the border of the bottom surface; end pins (12) connecting a ground and the signal line; one or more emitters (13a, 13b, 13c, 13d) composed of a plurality of emitters and located on the upper surface of the bi-level structure; and one or more microchips (14a, 14b, 14c, 14d) located either on the feeder (10) of the bottom surface or on the feeding pin (11), and used as a RFID tag chip within a 900 MHz network area. Each level is used as a dielectric layer and a plurality of transmission lines is connected to each feeder or end pin through a planer inverted-F antenna (PIFA), and the microchips are attached. The RFID tag within a 900 MHz network area with durability against a high temperature and an impact maintains its durability by the use of the remaining microchips in case a microchip is damaged due to a high temperature and an impact. |
