Hybrid model chipless RFID tags based on the integration of filter theory and multi-resonator circuit

Year 2024, Volume: 30 Issue: 2, 196 - 201, 30.04.2024

Mert Büyüktuna , Ali Kürşad Görür

Abstract

In this paper, a hybrid model chipless radio frequency identification (RFID) tag is introduced. It is constructed by using multi-resonator circuit with a bandstop filter simultaneously. Bandstop filter section is conventionally designed by quarter-wave open-circuited stubs, while the multi-resonator circuit is developed by coupling dual-band co-directional split ring resonators (CDSRRs) to a feeding line. Each stub and CDSRR can provide two and four frequency codes, respectively. The open-circuited stubs can form the resonant frequencies within wide frequency range, while the CDSRRs have notch band characteristics. The proposed hybrid model approach has the ability of combining notch and wide band resonant frequencies on a single circuit. A 12-bit chipless RFID tag is designed by locating two wideband monopole antennas vertically and horizontally at the end of the multi-resonator circuit. The monopole antennas are formed by using two orthogonal ellipses. 000000000000 and 100100100100 frequency coded two tags have been experimentally investigated.

Keywords

Chipless, RFID tag, Split ring resonator, Bandstop filter, Monopole antenna

Filtre teorisi ve çoklu rezonatör devresinin entegrasyonu temeline dayalı hibrit model çipsiz RFID etiketleri

Abstract

Bu makalede, bir hibrit model çipsiz radyo frekansı tanımlama (RFID) etiketi tanıtılmaktadır. Bu etiket çoklu rezonatör devresinin bir bant durduran filtre ile eş zamanlı kullanılmasıyla oluşturulmaktadır. Çoklu rezonatör devresi çift bantlı eş yönlü ayrık halka rezonatörlerin (CDSRR) bir besleme hattına kuplajlanmasıyla geliştirilirken, bant durduran filtre bölümü çeyrek dalga boyunda açık devre sonlandırmalı saplamalar kullanarak tasarlanmaktadır. Her yan hat ve CDSRR, sırasıyla iki ve dört frekans kodu sağlayabilmektedir. CDSRRlar çentik bant karakteristiğine sahipken, açık devre saplamalar rezonans frekanslarını geniş frekans aralığında oluşturabilmektedir. Önerilen hibrit model yaklaşımı, çentik ve geniş bant rezonans frekanslarını tek bir devre üzerinde birleştirme yeteneğine sahiptir. 12 bitlik çipsiz bir RFID etiketi, çoklu rezonatör devresinin ucuna dikey ve yatay olarak iki geniş bant monopol anten yerleştirilerek tasarlanmaktadır. Monopol antenler iki ortogonal elips kullanılarak oluşturulmaktadır. 000000000000 ve 100100100100 frekans kodlarına sahip iki etiket deneysel olarak incelenmiştir.

Keywords

Çipsiz, RFID etiketi, Ayrık halka rezonatör, Bant durduran filtre, Monopol anten

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