Optimization of Meander Line Antenna Considering Coupling Between Nonlinear Circuit and Electromagnetic Waves for UHF-Band RFID

被引：19

作者：

Watanabe, Yuta ^{[1
]}

Watanabe, Kota ^{[1
]}

Igarashi, Hajime ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido 0600814, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 05期

关键词：

Cockcroft-Walton (CW) circuit; finite-difference time-domain (FDTD); IC tag; radio frequency identification (RFID);

D O I：

10.1109/TMAG.2010.2089606

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

This paper presents optimization of meander line antennas (MLA) for passive IC tags which contain nonlinear circuits. In the present analysis, the tag antenna loaded by the Cockcroft-Walton circuit is analyzed by solving coupling equations for electromagnetic waves and nonlinear circuit with FDTD method. The antenna shape is optimized so that the output voltage of the Cockcroft-Walton circuit is maximized using the micro genetic algorithm (mu GA). The computational burden in the optimization processes is effectively suppressed by truncating the transient computations. A criterion is introduced to evaluate the errors caused by the truncation. The present method yields the optimal MLA which has the greater output voltage in comparison with the dipole antenna.

引用

页码：1506 / 1509

页数：4

共 11 条

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[2]

Remotely powered addressable UHF RFID integrated system [J].