摘要
提出一种无源超高频(UHF)射频偶极子标签天线在自由空间中辐射效率的测量方法并通过仿真和实验对其验证。辐射效率是标签天线的一个重要性能参数,通过测量标签天线的3个基本参数,即方向性系数、实际增益和功率传输系数得出结果,最后对比仿真与实测结果,两者取得良好的一致性,验证了该方法是可靠的。该方法的一个主要优点是可以在实际应用环境中对标签天线辐射效率进行测量,具有广阔的潜力。
A radiation efficiency measurement method is developed for measurement of passive UHF RFID dipole tag antennas in free space and veri- fied by simulating and measuring. The radiation efficiency is an important performance of tag antenna, this paper can obtain the results by calculating three basic parameters of tag antenna, they are realized gain, direetivity and power transmission coefficient. The measured and simulated results are in good agreement, it indicates the method is reliable. One of the main advantages of the method is that the measurement can be eondueted in the tag ap- plication environment, and has great potential.
出处
《电视技术》
北大核心
2014年第19期139-142,共4页
Video Engineering
基金
国家杰出青年科学基金项目(50925727)
国防科技计划项目(C1120110004
9140A27020211DZ5102)
教育部科学技术研究重大项目(313018)
安徽省科技计划重点项目(1301022036)
中央高校基本科研业务费专项资金项目(2012HGCX0003)
