A miniaturized 2.45 GHz RFID tag antenna using planar impedance transformer

被引：0
|
作者：
Fan, Zhiguang [1 ]
Qiao, Shan [1 ,2 ]
Huangfu, Jiangtao [1 ]
Ran, Lixin [1 ]
机构：
[1] Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Zhejiang Univ City Coll, Hangzhou 310027, Peoples R China
来源：
PIERS 2007 BEIJING: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, PTS I AND II, PROCEEDINGS | 2007年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 0.5 mm 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 electromagnetic simulation method is utilized to simulate and optimize the tag antenna design. The final design occupies only an area of 33.55mmx8.54mm. The onmidirectional radiation pattern, the peak gain value of -0.2dBi and the radiation efficiency of 0.56 are also achieved, which demonstrate acceptable electrical performance for miniaturized tag design.
引用
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页码：212 / +
页数：3
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