Abstract
We present a compact planar antenna that can be embedded within low-frequency UHF power-harvesting tag platforms.The antenna is a planar inverted-F antenna-type design with a set of optimized slots and provides large bandwidths, comparable to half-wave dipoles, while maintaining a low profile and small area. Hence, it can be embedded within the PCB of power-harvesting tags operating even at low UHF frequencies, resulting in a compact, slim overall device. We demonstrate this by embedding the antenna within a 430 MHz low-power discrete-component harvester tag, and we have designed and manufactured and verified antenna performance by both antenna measurements and tag link measurements. An added advantage of this topology is that tags with this antenna can be placed very near large metal structures without shorting or detuning, unlike tags with standard external dipole antennas. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2379–2383, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27096
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