{"title":"双矩形螺旋天线RFID标签延迟电磁干扰和寄生效应下系统稳定性优化","authors":"O. Aluf","doi":"10.1109/COMCAS.2015.7360367","DOIUrl":null,"url":null,"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 V<sub>1</sub>(t) as the voltage on the first antenna inductance and V<sub>2</sub>(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 V<sub>1</sub>(t - τ<sub>1</sub>) and V<sub>2</sub>(t - τ<sub>2</sub>) respectively (τ<sub>1</sub> ≠ τ<sub>2</sub>) and the delayed voltage derivatives are dV<sub>1</sub>(t - Δ<sub>1</sub>)/dt, dV<sub>2</sub>(t - Δ<sub>2</sub>)/dt respectively Δ<sub>μ</sub>. Additionally, there is a delay in time for the microstrip parasitic effects Δ<sub>μ</sub>. 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 τ<sub>1</sub>, τ<sub>2</sub>, Δ<sub>1</sub>, Δ<sub>2</sub> and Δ<sub>μ</sub>.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"RFID tags with double rectangular spiral antennas, system stability optimization under delayed electromagnetic interference and parasitic effects\",\"authors\":\"O. Aluf\",\"doi\":\"10.1109/COMCAS.2015.7360367\",\"DOIUrl\":null,\"url\":null,\"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 V<sub>1</sub>(t) as the voltage on the first antenna inductance and V<sub>2</sub>(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 V<sub>1</sub>(t - τ<sub>1</sub>) and V<sub>2</sub>(t - τ<sub>2</sub>) respectively (τ<sub>1</sub> ≠ τ<sub>2</sub>) and the delayed voltage derivatives are dV<sub>1</sub>(t - Δ<sub>1</sub>)/dt, dV<sub>2</sub>(t - Δ<sub>2</sub>)/dt respectively Δ<sub>μ</sub>. Additionally, there is a delay in time for the microstrip parasitic effects Δ<sub>μ</sub>. 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 τ<sub>1</sub>, τ<sub>2</sub>, Δ<sub>1</sub>, Δ<sub>2</sub> and Δ<sub>μ</sub>.\",\"PeriodicalId\":431569,\"journal\":{\"name\":\"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)\",\"volume\":\"17 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-12-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/COMCAS.2015.7360367\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMCAS.2015.7360367","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
RFID tags with double rectangular spiral antennas, system stability optimization under delayed electromagnetic interference and parasitic effects
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.
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