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Электродинамический анализ мультичастотной метки резонансного типа

Электродинамический анализ мультичастотной метки резонансного типа

Abstract

The purpose of work is reception analytical algorithm of the decision without use of any numerical methods. The present work is the first step to the theoretical decision of a problem of parametrical synthesis of a multifrequency RFID-label of resonant type when width of ring of resonant elements and the general geometry of structure are searching with help of the definite frequency distribution of amplitude of a field of dispersion values of radiuses. In work the electrodynamic analysis of system of flat concentric metal rings for application in labels without chip of radio-frequency identification of ultralow cost on the basis of a method of frequency distinction are considered. Distributions of currents to surfaces of rings, diagrammes of an orientation of structure and dependence of amplitude of a field of return dispersion on frequency are received and analysed. The problem of the electrodynamic analysis of the antenna without influence of the dielectric substrate which are a basis for resonant elements is considered. For calculation in approach of a regular coplanar line the approached analytical expressions have been used by authors. Amplitude of currents of a ring in a resonance much more than out of a resonance. The amplitude of a field on resonant diagrammes of an orientation (DA) considerably surpasses amplitude on average frequency between resonances. It is established that in this connection turn of a plane of an irradiation on a corner from a normal to a surface of a label does not lead to qualitative distortion of a picture of resonant peaks and DA.

Целью работы является получение именно аналитического алгоритма решения без использования каких-либо численных методов. Настоящая работа – это первый шаг к теоретическому решению задачи параметрического синтеза мультичастотной RFID-метки резонансного типа, когда по заданному частотному распределению амплитуды поля рассеяния ищутся значения радиусов, ширин кольцевых резонансных элементов и общая геометрия структуры. В работе рассмотрен электродинамический анализ системы плоских концентрических металлических колец для применения в бесчиповых метках радиочастотной идентификации сверхнизкой стоимости на основе метода частотного различения. Получены и проанализированы распределения токов на поверхности колец, диаграммы направленности структуры и зависимости амплитуды поля обратного рассеяния от частоты. Рассмотрена задача электродинамического анализа антенны без учёта влияния диэлектрической подложки, являющейся основой для резонансных элементов. Для расчёта в приближении регулярной компланарной линии авторами были использованы приближённые аналитические выражения. Амплитуда токов кольца в резонансе значительно больше, чем вне резонанса. Амплитуда поля на резонансных диаграммах направленности (ДН) значительно превосходит амплитуду на средней частоте между резонансами. Установлено, что в связи с этим поворот плоскости облучения на угол от нормали к поверхности метки не приводит к качественному искажению картины резонансных пиков и ДН.

Keywords

РАДИОЧАСТОТНАЯ ИДЕНТИФИКАЦИЯ, МУЛЬТИЧАСТОТНАЯ МЕТКА, ПАРАМЕТРИЧЕСКИЙ СИНТЕЗ, ТЕОРИЯ ВЫЧЕТОВ, КВАЗИСТАТИЧЕСКОЕ ПРИБЛИЖЕНИЕ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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