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A broadband UHF RFID Tag antenna with a novel T-matching network
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2014 (English)In: Progress in Electromagnetics Research Symposium, ISSN 1559-9450, 978-981 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, an-ultra-high frequency (UHF) passive broadband radio frequency identification (RFID) Tag Antenna with a novel T-matching network is presented. By slightly tuned the arm lengths of the T-matching network, the impedance matching between the antenna and the chip and a broad impedance bandwidth is obtained. Thanks to the bent radiating element, the size reduction of the proposed antenna is realized. The bandwidth (S11 < -20 dB) and the corresponding 3 dB PRC bandwidth of the proposed antenna are 133MHz (835-968 MHz) and 88MHz (882-970 MHz) respectively, which means that both bandwidths are wide enough to cover the whole global UHF RFID frequency band. In the simulated results, a smooth and stable gain curve between 0.04 dBi to 1.86 dBi is found throughout the entire operating frequency band, and a gain of 1.38 dBi is obtained at the desired operating frequency point (915 MHz). In conclusion, the designed antenna owns the advantages of low-profile, compact size (56×56mm2), low cost and stable gain. Based on the simple structure, the designed tag antenna can be easily manufacture and widely used in practical applications.

Place, publisher, year, edition, pages
2014. 978-981 p.
Keyword [en]
Antennas, Bandwidth, Electric impedance, Frequency bands
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-168513Scopus ID: 2-s2.0-84911098681OAI: oai:DiVA.org:kth-168513DiVA: diva2:818534
Conference
Progress in Electromagnetics Research Symposium, PIERS 2014; Guangzhou; China
Note

QC 20150609

Available from: 2015-06-09 Created: 2015-06-04 Last updated: 2017-12-04Bibliographically approved

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He, Sailing

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