METAL CARD WITH RADIO FREQUENCY (RF) TRANSMISSION CAPABILITY
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Jan 20, 2014
filing date -
Jan 20, 2014
priority date (Note) -
Abandoned
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Abstract
A smart card with a metal layer which can capture radio-frequency (RF) signals via an antenna system is made operable by modifying the metal layer to enable passage of RF signals through the metal layer and/or by introducing a ferrite layer to enhance the efficient reception/transmission of RF signals by the antenna system. In one embodiment apertures are formed in and through the metal layer to allow RF signals to pass through the metal layer without negatively impacting the decorative or esthetic and/or reflective nature of the metal layer. These modifications allow for dual interface and contactless smart card formats. In other embodiments of the invention, a ferrite layer is formed between the metal layer and the inductors/antennas mounted within the smart card to enhance the efficient reception/transmission of RF signals.
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