RFID tags with double rectangular spiral antennas, system stability optimization under delayed electromagnetic interference and parasitic effects

Ofer Aluf

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this article, we discuss the crucial subject of RFID tags with double rectangular spiral antennas, system stability optimization under delayed electromagnetic interference and parasitic effects. Two antennas are connected in series by microstrip line with parasitic effects. We define V1(t) as the voltage on the first antenna inductance and V2(t) as the voltage on the second antenna inductance. Due to electromagnetic interference there are differences in time delays, with respect to the first and second rectangular spiral antennas voltages and voltage derivatives. The delayed voltages are V1(t - τ1) and V2(t - τ2) respectively (τ1 ≠ τ2) and the delayed voltage derivatives are dV1(t - Δ1)/dt, dV2(t - Δ2)/dt respectively Δμ. Additionally, there is a delay in time for the microstrip parasitic effects Δμ. The double rectangular spiral antenna system equivalent circuit can be described in terms of delayed differential equations, depending on variable parameters and delays. The stability of a given steady state is determined by the graphs of some function of τ1, τ2, Δ1, Δ2 and Δμ.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479974733
DOIs
StatePublished - 17 Dec 2015
EventIEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 - Tel-Aviv, Israel
Duration: 2 Nov 20154 Nov 2015

Publication series

Name2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015

Conference

ConferenceIEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015
Country/TerritoryIsrael
CityTel-Aviv
Period2/11/154/11/15

Keywords

  • Bifurcation
  • Delay Differential Equations (DDEs)
  • Double rectangular spiral antennas
  • Stability

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