The Effect of Lossy Dielectric Objects on a UHF RFID Meander Line Antenna
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Meander line antennas placed on various objects suffer a shift in resonant frequency. Numerical modeling demonstrated that the frequency increases with wire diameter and object conductivity, and decreases with increasing permittivity. This contrasts with a linear dipole where an increase in wire diameter results in a decrease in resonant frequency. A 4% bandwidth is sufficient for conductivity (s) values up to 0.01 S/m and small changes in permittivity. This has implications for RFID antennas designed for placement on a wide variety of materials.
2012 International Symposium on Antennas and Propagation (APSURSI 2012)
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Electrical and Electronic Engineering not elsewhere classified