應用於金屬物品之無線射頻辨識標籤天線設計

• Main Authors: Shih-Ting Huang, 黃士庭
• Other Authors: Hua-Ming Chen
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/x589c4

碩士 === 國立高雄應用科技大學 === 光電與通訊工程研究所 === 102 === Three UHF RFID tag antennas designed for Alien H4 chip are presented in this thesis. The design techniques of tag antennas applied to around metal surface are especially addressed. The first antenna is a ground radiated antenna. It uses an open slot structure to excite the ground to radiate energy. The second antenna use the first structure and etching four slits around the antenna which is attached to the metal surface. This design allows the tag to improve the performance to metal effects. The last one is a circularly polarized tag antenna, which is using an L-type coupling feed line to excite horizontal and vertical currents, and adjusting the unequal length slot to produce the circular polarization wave. This antenna also has a good performance for attaching on the metal surface.