This paper proposes a UHF flexible passive tag antenna for Radio Frequency Identification (RFID) which operates at 902–928 MHz frequency band. As main contribution, we design an electrically small and slim tag antenna by using a flexible commercial substrate. The small antenna has dimensions of 13 mm × 28 mm × 0.35 mm. The geometry of the tag antenna was optimized, using a Genetic Algorithm, to maximize its read range. The antenna performance was evaluated on flat and curve surfaces, by means of simulations of input impedance, reflection coefficient, gain and read range. Measurements of reflection coefficient were also developed. Results prove that the tag antenna can be wrapped on cylindrical surfaces with read ranges above one meter, suitable for applications related to industrial asset management, access control and identification of small objects such as hardware tools, tin cans, spray bottles and tin PET cylindrical containers.

本文提出了一种用于射频识别（RFID）的UHF柔性无源标签天线，其工作在902–928 MHz频段。作为主要贡献，我们通过使用柔性商用基板设计了一种小巧纤细的标签天线。小型天线的尺寸为13 mm×28 mm×0.35 mm。使用遗传算法优化了标签天线的几何形状，以最大化其读取范围。通过模拟输入阻抗，反射系数，增益和读取范围来评估天线在平坦和弯曲表面上的性能。还开发了反射系数的测量方法。结果证明，标签天线可以包裹在读取范围超过一米的圆柱表面上，适用于与工业资产管理相关的应用，