TY - GEN

T1 - RFID tags with double rectangular spiral antennas, system stability optimization under delayed electromagnetic interference and parasitic effects

AU - Aluf, Ofer

N1 - Publisher Copyright:
© 2015 IEEE.

PY - 2015/12/17

Y1 - 2015/12/17

N2 - 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.

AB - 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.

KW - Bifurcation

KW - Delay Differential Equations (DDEs)

KW - Double rectangular spiral antennas

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=84962692921&partnerID=8YFLogxK

U2 - 10.1109/COMCAS.2015.7360367

DO - 10.1109/COMCAS.2015.7360367

M3 - Conference contribution

AN - SCOPUS:84962692921

T3 - 2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015

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

PB - Institute of Electrical and Electronics Engineers

T2 - IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015

Y2 - 2 November 2015 through 4 November 2015

ER -