An HF/UHF dual mode RFID transponder antenna and HF range extension using UHF wireless power transmission

An HF/UHF compatible RFID transponder antenna is designed, simulated, and measured for dual band operation and HF range extension. A dual mode compatible RFID transponder antenna has the benefits of each mode and eliminates the disadvantages of single mode operation. One of the major drawbacks of UHF antennas is their poor performance when the tag is placed on or near metallic objects. To overcome this shortcoming, two-layer substrate with degenerate grounded is used and a 4-turn spiral antenna is placed on the top and bottom parts of the substrate for HF operation. The co-existence of both antennas affects standalone performances but desired specifications can be achieved with the proposed design. A prototype is built and measured to verify the target design criteria . Measured inductance of the HF loop is 2.54 µH and the gain of the UHF antenna is 2.73 dBi when placed on a metallic can. The transponder antenna can be configured for HF mode, UHF mode, or HF with range extension through a wireless power transmission (WPT) using the UHF band. WPT at the UHF band provides additional DC voltage for HF tag operation. This relatively new idea of HF range extension is supported with simulations and basic measurements

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[1] Finkenzeller, K. RFID Handbook: Fundamentals and Applications in Contactless Smart Cards and Identification. 1st ed. New York, NY, USA: John Wiley and Sons Ltd., 2003.
[2] Klapf Ch, Missoni A, Pribyl W, Holfer G, Holweg, G, Kargl W. Improvements in operational distance in passive HF RFID transponder systems. In: IEEE 2005 International Conference on RFID; 1517 April 2005; San Diego, CA, USA. New York, NY, USA: IEEE. pp. 250-257.
[3] Nikitin PV, Rao KVS. An overview of near field UHF RFID. In: IEEE 2008 International Conference on RFID; 1617 April 2008; Las Vegas, NV, USA. New York, NY, USA: IEEE. pp. 167-174.
[4] Rao KVS, Nikitin PV, Lam SF. Antenna design for UHF RFID tags: a review and a practical application. IEEE T Antenn Propag 2005; 53: 3870-3876.
[5] Cho C, Choo H, Park I. Design of planar RFID tag for metallic objects. Electron Lett 2008; 44: 175-177.
[6] Mo L, Zhang H, Zhou H. Broadband UHF RFID tag antenna with a pair of U slots mountable on metallic objects. Electron Lett 2008: 44: 1173-1174.
[7] Wonky C, Seong KJ, Hoon BJ. RFID tag antenna coupled by shorted microstrip line for metallic objects. Etri J 2008; 30: 597-599.
[8] Dobkin DM, Weigand SM. Environmental effects on RFID tag antennas. In: IEEE 2005 International Microwave Symposium; 1217 June 2005; Long Beach, CA, USA; New York, NY, USA: IEEE. pp. 135-138.
[9] Arumugam D, Daniels WE. Characteristics of passive UHF RFID tags on metal slabs. In: IEEE 2009 APS-URSI International Symposium; 15 June 2009; Charleston, SC, USA; New York, NY, USA: IEEE. pp. 1-4.
[10] Park YK, Lee GS, Kang J, Chung YC. Various UHF RFID tags for metallic object. In: IEEE 2007 APS-URSI International Symposium; 1015 June 2007; Honolulu, HI, USA; New York, NY, USA: IEEE. pp. 2285-2288.
[11] Mayer LW, Scholtz AL. A dual-band HF/UHF antenna for RFID tags. In: 2008 IEEE Vehicular Technology Conference; 2124 September 2008; Calgary, BC, Canada; New York, NY, USA: IEEE. pp. 1-5.
[12] Iliev P, Thuck PL, Luxey C, Staraj R. Dual-band HF-UHF RFID tag antenna. Electron Lett 2009; 45: 439-441.
[13] Ma ZL, Jiang LJ, Xi J, Ye, TT. A single-layer compact HF-UHF dual-band RFID tag antenna. IEEE Antenn Wirel Pr 2012; 11: 1257-1260.
[14] Deleruyelle T, Pannier P, Egels M, Bergeret E. Dual band mono-chip HF-UHF tag antenna. In: IEEE 2010 APSURSI International Symposium; 1117 July 2010; Toronto, ON, Canada; New York, NY, USA: IEEE. pp. 1-4.
[15] Toccafondi A, Giovampaola CD, Mariottini F, Cucini A. UHF-HF RFID integrated tag for moving vehicle identifi- cation. In: IEEE 2009 APS-URSI International Symposium; 15 June 2009; Charleston, SC, USA; New York, NY, USA: IEEE. pp. 1-4.
[16] Toccafondil A, Braconi P. Compact meander line antenna for HF-UHF tag integration. In: IEEE 2007 APS-URSI International Symposium; 1015 June 2007; Honolulu, HI, USA; New York, NY, USA: IEEE. pp. 5483-5486.
[17] Nishioka Y, Hitomi K, Okegawa H, Mizuno T, Fukasawa T, Miyashita H, Konishi Y. Novel antenna configuration for HF- and UHF-band hybrid card-type RFID tags. In: IEEE 2010 Antennas and Propagation (EuCAP); 1216 April 2010; Barcelona, Spain; New York, NY, USA: IEEE. pp. 1-5.
[18] Dehollain C, Declercq M, Joehl N, Curty JP. Design and Optimization of Passive UHF RFID Systems. 1st ed. New York, NY USA: Springer, 2007.