RFID Wideband and multi-band planar built-in RFID antenna

摘要

The present invention is a built-in RFID antenna having a mobile broadband and high gain characteristics, and the feed section (4), (5) is formed by connecting a coaxial cable to a microstrip feed line designed to 50Ω without a separate matching circuit, the first substrate upper layer Meandered-type radiating portion 3, elongated radiating portion 2, and radiating portions 7, 9, and two rectangular slits which are the same as the upper layer of the first substrate on the second substrate ( It consists of 10). In order to further increase the gain of the antenna, meandered-type radiators 14 and 17 on the left and right sides of the upper layer of the first substrate, and rectangular radiators 13 extending long on the left and right sides, respectively. 2 and 16, and the radiating portions 18, 19, 20, and 21 having the same shape as the upper layer of the first substrate were formed in the lower layer of the first substrate, and the second substrate. The upper and lower layers are composed of double reflecting plate portions 23 and 27 and double dielectric portions 25 and 26. ; RFID, Antenna, Built-In, Meandered-type