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Enhanced H‐field in HF RFID systems by optimizing the loop spacing of antenna coils
Author(s) -
Sharma Ashwani,
Zuazola Iñaki J.Garcia,
Gupta Anshu,
Perallos Asier,
Batchelor John C.
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27406
Subject(s) - loop antenna , antenna (radio) , electromagnetic coil , inductance , microwave , loop (graph theory) , electronic engineering , engineering , field (mathematics) , electrical engineering , radio frequency identification , antenna tuner , antenna measurement , antenna factor , acoustics , physics , computer science , telecommunications , mathematics , computer security , combinatorics , voltage , pure mathematics
This article presents a design study of a coil antenna with enhanced magnetic field (H‐field), aimed to be used as an interrogator in high frequency radio frequency identification. To achieve this, the number of loops of the antenna are refined by optimizing and exploiting the inner area of an initial coil, using distributed loops, unconstrained inductance and comparable Q‐factor (for a fair comparison) with respect to an initial design. The analytical and simulated results show reasonable agreement to validate the design. The enhanced H‐ field of the antenna shows an unconstrained Q‐factor, indicates a potential rise to the interrogating coverage and hence, resulting in more efficient antenna. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:944–948, 2013; View this article online at wileyonlinelibrary.com. DOI: 10.1002/mop.27406