A Miniaturized 2.45GHz RFID Tag Antenna Using Planar Impedance Transformer
We proposed a miniaturized 2.45 GHz RFID tag antenna consisting of a dipole radiator and a planar impedance transformer formed on a copper foil layer cladding on 0.5mm thick FR4 substrate. The impedance transformer comprises two inductively coupled spiral inductor to realize both resistance boosting and inductive compensation for the short dipole radiator to be conjugate-matched to the microchip. The length of the dipole radiator and the side length of the spiral inductor can be easily adjusted to tune the input resistance and inductance of the tag antenna. Finite Difference Time Domain (FDTD) 3D effectromagnetic simulation method is utilized to simulate and optimize the tag antenna design. The final design occupies only an area of 33.55mm×8.54 mm. The omnidirectional radiation pattern, the peak gain value of-0.2 dBi and the radiation effciency of 0.56 are also achieved, which demonstrate acceptable effectrical performance for miniaturized tag design.
Zhiguang Fan Shan Qiao Jiangtao Huangfu Lixin Ran
Department of Information and Electronic Engineering, Zhejiang University Hangzhou 310027, China Department of Information and Electronic Engineering, Zhejiang University Hangzhou 310027, China Zhe
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
267-270
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）