Dual-band platform tolerant antennas for radio-frequency identification
Dual-band platform tolerant antennas for radio-frequency identification
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DOI：
10.1109/tap.2006.880726
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发表时间：
2006-09-01
影响因子：
5.7
通讯作者：
Saily, Jussi
中科院分区：
文献类型：
--
作者：
Hirvonen, Mervi;Jaakkola, Kaarle;Saily, Jussi
介绍了一种用于调谐单元件平面倒F天线（PIFA）以提供双频操作的技术。调谐是可能的，这是由于射频识别微芯片典型的特定阻抗水平。由于期望的阻抗水平位于史密斯圆图的外缘附近，因此可以布置单个阻抗轨迹以使输入阻抗通过两次，从而导致双频带操作。阻抗轨迹的调谐是基于贴片开路端的馈电电感和电容耦合。本文还讨论了小型天线平台公差的原则。设计，电路模型，仿真和测量结果的双频平台容忍PIFA的报告和讨论。
A technique for tuning a single-element planar inverted F-antenna (PIFA) to provide a dual-band operation is introduced. The tuning is possible due to the particular impedance level typical to radio-frequency identification microchips. As the desired impedance level resides near the outer rim of the Smith chart, a single impedance locus may be arranged to pass the input impedance twice resulting in dual-band operation. The tuning of the impedance locus is based on the feed inductance and capacitive coupling at the open end of the patch. In this paper, also a discussion about the principles of platform tolerance of small antennas is provided. A design, circuit model, simulations, and measurement results of dual-band platform tolerant PIFAs are reported and discussed.