Analysis and synthesis of UHF RFID antennas using the embedded T-match

The T-match structure is commonly used to match an RFID chip's reactive impedance to a dipole. Models that describe T-match are known, but they are neither sufficiently accurate to model antennas nor to synthesize the antenna geometry. Here, we present the embedded T-match circuit model, which is amenable to accurate analysis and synthesis.

[1]  G. Marrocco,et al.  The art of UHF RFID antenna design: impedance-matching and size-reduction techniques , 2008, IEEE Antennas and Propagation Magazine.

[2]  Shintaro Uda,et al.  Yagi-Uda antenna , 1954 .

[3]  E. Ekelman,et al.  On the accuracy of the transmission line model of the folded dipole , 1979 .

[4]  W. Hilberg,et al.  From Approximations to Exact Relations for Characteristic Impedances , 1969 .

[5]  James E. Storer.  Variational solution to the problem of the symmetrical cylindrical antenna , 1950 .

[6]  Reinmut K. Hoffmann,et al.  Handbook of microwave integrated circuits , 1987 .

[7]  Daniel M. Dobkin,et al.  The RF in RFID: Passive UHF RFID in Practice , 2007 .

[8]  R. Becchmann.  On the Calculation of Radiation Resistance of Antennas and Antenna Combinations , 1931, Proceedings of the Institute of Radio Engineers.

[9]  Chen-To Tai.  Theory of terminated monopole , 1984 .

[10]  R. Elliott.  Antenna Theory and Design , 2003 .

[11]  S.F. Lam,et al.  Power reflection coefficient analysis for complex impedances in RFID tag design , 2005, IEEE Transactions on Microwave Theory and Techniques.

[12]  H. King.  Mutual impedance of unequal length antennas in echelon , 1957 .

[13]  R. Lampe.  Correction to "Design formulas for an asymmetric coplanar strip folded dipole" , 1986 .

[14]  V. Fouad Hanna,et al.  Analysis of asymmetrical coplanar waveguides , 1981 .

[15]  K. Kurokawa,et al.  Power Waves and the Scattering Matrix , 1965 .

[16]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[17]  P. S. Carter,et al.  Circuit Relations in Radiating Systems and Applications to Antenna Problems , 1932, Proceedings of the Institute of Radio Engineers.

[18]  Hubregt J. Visser.  Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab , 2007 .

[19]  Manos M. Tentzeris,et al.  T-matching networks for the efficient matching of practical RFID tags , 2009, 2009 European Microwave Conference (EuMC).

[20]  A.A. Pistolkors.  The Radiation Resistance of Beam Antennas , 1929, Proceedings of the Institute of Radio Engineers.

[21]  C. Balanis.  Antenna theory , 1982 .

[22]  R. Garg,et al.  Microstrip Antenna Design Handbook , 2000 .

[23]  D. Thebault,et al.  Theoretical and Experimental Investigation of Asymmetric Coplanar Waveguide , 1984 .

[24]  E. HOWARD,et al.  Mutual Impedance of Unequal Length Antennas in Echelon * , 2000 .