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US 2006/0220869 A1Published application
Tunable RFID tag for global applications
AssigneeIntermec IP Corp.
InventorsVenkata Kodukula, Pavel Nikitin, For Lam
Life of this patent
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AssigneeIntermec IP Corp.
InventorsVenkata Kodukula, Pavel Nikitin, For Lam
Estimating the term…
An RF transponder comprises a transponder integrated circuit, an antenna connected to the transponder integrated circuit, and at least one parasitic element adapted to interact electrically with the antenna and thereby affect antenna impedance. The orientation of the parasitic element with respect to the antenna is selected to achieve a desired operational frequency band for the RF transponder. Specifically, the spacing between the antenna and the parasitic element is selected to achieve the desired operational frequency band. For example, a first selected spacing may enable an operational frequency band suitable for a first geographic region (e.g., the United States), a second selected spacing may enable an operational frequency band suitable for a second geographic region (e.g., Europe), and a third selected spacing may enable an operational frequency band suitable for a third geographic region (e.g., Japan).
An RF transponder, comprising:
A method of tuning an RF transponder having a transponder integrated circuit and an antenna connected to said RF transponder integrated circuit, the method comprising orienting at least one parasitic element with respect to said antenna to achieve a desired operational frequency band for the RF transponder, said at least one parasitic element being adapted to interact electrically with said antenna and thereby affect antenna impedance in correspondence with spacing between said antenna and said at least one parasitic element.
An RF transponder kit, comprising:
Dependencies are inferred from the claim text.