CHIP IMPEDANCE MATCHING FOR UHF RFID TAG ANTENNA DESIGN
نویسندگان
چکیده
منابع مشابه
UHF RFID Transponder Chip and Antenna Impedance Measurements
The communication performance between reader and transponder in radio frequency identification (RFID) in the ultra high frequency (UHF) range strongly depends on the matching between transponder chip and transponder antenna. To assure power optimization in the forward link the input impedance of the antenna must be the complex conjugate of the chip’s input impedance. In this contribution a meas...
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Design of a circularly polarized tag antenna for UHF RFID applications is discussed and a planar tag antenna, based on series connected loop topology is designed. Simulation based design process for axial ratio optimization is discussed and the simulation and measurement results for the proposed tag antenna are presented.
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In this paper a broadband radio frequency identification (RFID) tag antenna for the ultrahigh-frequency (UHF) band is designed. The proposed antenna consists of a first-order Hilbert fractal structure and a spiral structure. In order to ensure the conjugate matching between the tag antenna and the electronic chip, a T-matching structure is employed. The interaction between two radiating element...
متن کاملImpedance Matching for RFID Tag Antennas
Passive UHF RFID tag consists of a microchip attached to an antenna. Proper impedance match between the antenna and the chip is crucial in RFID tag design. It directly influences RFID tag performance characteristics such as the read range. It is known that an RFID microchip is a nonlinear load whose complex impedance varies with the frequency and the input power. We investigate the effect of us...
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ژورنال
عنوان ژورنال: Progress In Electromagnetics Research
سال: 2008
ISSN: 1559-8985
DOI: 10.2528/pier08011804