Dual-Band Platform Tolerant Antennas for Radio-Frequency Identification

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...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2006-09, Vol.54 (9), p.2632-2637
Main Authors: Hirvonen, M., Jaakkola, K., Pursula, P., Saily, J.
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Applied sciences
Circuit optimization
Circuit simulation
Computer simulation
Coupling circuits
Dual band
energy scavenging
Exact sciences and technology
Feeds
Impedance
Inductance
planar inverted F-antenna (PIFA)
platform tolerance
Platforms
Radio frequency
radio-frequency identification (RFID)
Radiocommunications
Radiofrequency identification
Radiolocalization and radionavigation
Smith chart
Telecommunications
Telecommunications and information theory
Tolerances
Tuning
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Summary: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
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2006.880726