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A tri‐band, small size radio frequency identification tag antenna with U‐shaped slots
Author(s) -
Aliakbari Hanieh,
Mallahzadeh Alireza,
Nezhad Sajad Mohammad Ali
Publication year - 2012
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.26949
Subject(s) - antenna (radio) , radio frequency identification , antenna tuner , impedance matching , microwave , electronic engineering , electrical impedance , radio frequency , capacitive sensing , electrical engineering , frequency band , engineering , antenna measurement , computer science , telecommunications , antenna factor , computer security
A new multiband, small size antenna for passive radio frequency identification (RFID) tags is presented. Placement of three U‐shaped slots can create three independent resonances within the RFID range: 0.953, 2.45, and 5.8 GHz, whereas in each resonance, particular inductive input impedance will be achieved by a simple technique to be conjugately matched with the capacitive impedance of the chosen electronic chip. The proposed simple structural antenna is flexibly tunable to be matched with other chips in RFID frequencies. It is shown that the matching and forward patterns of tag antenna in each band are desirable, simultaneously. Details of the proposed antenna design and measured results are presented. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1975–1978, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26949