中圖分類號： TN820 文獻標識碼： A DOI：10.16157/j.issn.0258-7998.201197 中文引用格式： 王翠，洪濤. 面向干式水表產品追溯的RFID標簽天線設計[J].電子技術應用，2021，47(9)：101-104，116. 英文引用格式： Wang Cui，Hong Tao. Design of RFID tag antenna for quality traceability of dry-type water meter[J]. Application of Electronic Technique，2021，47(9)：101-104，116.
Design of RFID tag antenna for quality traceability of dry-type water meter
Wang Cui，Hong Tao
College of Quality & Safety Engineering，China Jiliang University，Hangzhou 310018，China
Abstract： In order to achieve the quality traceability of the dry-type water meter manufacturing process, so as to effectively monitor the quality and quantity of the dry-type water meter, according to the internal structure of the dry-type water meter, a miniaturized metal-resistant ultra-high frequency(UHF) printed circuit board(PCB)radio frequency identification(RFID) tags with performance to meet the quality traceability of the dry-type water meter is designed. The tag antenna adopts a bent dipole structure and can be embedded in a water meter. To improve the performance of RFID tag antennas in metal environments, based on the internal structure and size constraints of dry water meters, through the design, debugging and simulation of the concave bending structure of the antenna electric small loop, it discovers the degree of influence on the antenna center frequency and return loss, and realizes the miniaturization design of the tag antenna. The actual distance test and the minimum activation power test of the tag antenna sample verify that the maximum reading distance of the designed tag antenna after being embedded in the water meter is 3.2 m, and the actual center frequency is 900 MHz, which meets the reading requirements for quality traceability.
Key words : bent dipole antenna；dry-type water meter；metal-resistant；miniaturization；printed circuit board(PCB)