Method and apparatus for multiple frequency RFID tag...

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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C340S572700

Reexamination Certificate

active

10937208

ABSTRACT:
The present invention provides a multi-band, multi-mode RFID tag that uses a single antenna structure and integrated circuit to provide asset location information at any stage of a supply chain. The unified tag design operates at multiple frequencies (or bands) using the antenna structure, for example, 125 kHz, 13.56 MHz, 915 MHz, and 2.45 GHz, and preferably operates electrostatically (at lower frequencies) and electromagnetically (ay higher frequencies). An on-chip frequency monitor in the integrated circuit automatically determines which frequency is present and derives a local clock for the tag's integrated circuit, which can vary in accordance with the frequency or which can be constant. Alternatively, a phase locked loop circuit can be used to derive a local clock signal modulated into the interrogation signal. On-chip matching and power extraction circuits derive power for the tag from the interrogation signal, which is preferably passive. Additionally, a receiver can receive data from the interrogation signal.

REFERENCES:
patent: 6018299 (2000-01-01), Eberhardt
patent: 6025725 (2000-02-01), Gershenfeld et al.
patent: 6091332 (2000-07-01), Eberhardt et al.
patent: 6094138 (2000-07-01), Eberhardt et al.
patent: 6107920 (2000-08-01), Eberhardt et al.
patent: 6147605 (2000-11-01), Vega et al.
patent: 6243013 (2001-06-01), Duan et al.
patent: 6246327 (2001-06-01), Eberhardt
patent: 6265977 (2001-07-01), Vega et al.
patent: 6611199 (2003-08-01), Geiszler et al.
patent: 6720866 (2004-04-01), Sorrells et al.
patent: 6732923 (2004-05-01), Otto
patent: 6754190 (2004-06-01), Gurney et al.
patent: 6982452 (2006-01-01), Beigel
patent: 6999028 (2006-02-01), Egbert
patent: 2004/0263319 (2004-12-01), Huomo
Sanjay Sarma, David L. Brock & Kevin Ashton, “The Networked Physical World Proposals for Engineering the Next Generation of Computing, Commerce & Automatic-Identification”, Oct. 1, 2000 distribution restricted to sponsors until Jan. 1, 2001, p. 10, section 5.
Guy Theunis, “What about RFID? What are the possible frequencies?”, May 2004.
Department of Commerce, Washington D.C., “Radio Frequency Identification—Opportunities and Challenges in Implementation”, Apr. 2005, pp. 22-23, section heading—“Harmonization of RFID Frequencies”.
Dejan S. Filipovic, John L. Volakis, “Design of a Multi-functional Slot Aperture (Combo-Antenna) for Automotive Applications—Motivation/Challenges/Objective—Antenna Design Challenges,” Jun. 16-21, 2002, p. 1.
Nathan Cohen, “Fractals' new era in military antenna design,” Aug. 1, 2005, p. 14, from www.rfdesign.com.
Yoonjae Lee and Suman Ganguly & Junho Yeo and Raj Mittra, “A Novel Conformal Multiband Antenna Design based on Fractal Concepts,” 2002, pp. 92-95 IEEE.
Renu Bansal, P.K.Singhal & P.C.Sharma, “A Novel Multiband Antenna: Fractal Antenna,” Oct. 12-14, 2005, pp. 1907-1910.

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