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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Equivalent circuit model of a coaxial excited microstrip-fed quasi-lumped element resonator antenna array
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Equivalent circuit model of a coaxial excited microstrip-fed quasi-lumped element resonator antenna array

机译：同轴激励微带馈电准集总元件谐振器天线阵列的等效电路模型

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摘要

An approximate lumped-parameter equivalent circuit model of the quasi-lumped element resonator antenna array is presented. The array consists of six series resonant circuits of frequency-independent elements, each with an interdigital finger capacitor (IDC), and shorted across by a parallel narrow strip inductor. Each resonator exhibits an aperture size of 0.207 × 0.2 at a centre frequency of 5.8 GHz, with entire array size of 2.857 × 1.07. The resulting design is fed by a microstrip line and excited by a coaxial feed probe. A simple equivalent circuit model representing the six resonant circuits as well as the coaxial feed probe circuit, using the magnetic-frill model approach but with the simplest uniform-current model is described to predict the characteristics of the proposed resonator (and by extension, the proposed array), the effects of the coaxial probe and the microstrip feed line. Simulated data obtained from a full wave analysis using finite integration technique commercial solver is compared with the Agilent advanced design system results of the equivalent circuit. The derived equivalent circuit model was validated both analytically and by numerical simulations.
机译：提出了准集总元件谐振器天线阵列的集总参数等效电路模型。该阵列由六个与频率无关的元件组成的串联谐振电路组成，每个电路都有一个叉指电容（IDC），并由一个平行的窄带电感短路。每个谐振器在5.8 GHz中心频率下的孔径尺寸为0.207×0.2，整个阵列尺寸为2.857×1.07。最终的设计由微带线馈电，并由同轴馈电探头激励。描述了一个简单的等效电路模型，该模型代表了六个谐振电路以及同轴馈电探针电路，使用磁褶边模型方法，但具有最简单的均流模型，以预测所提出的谐振器的特性（并通过扩展，提出的阵列），同轴探针和微带馈线的影响。使用有限积分技术的商用求解器通过全波分析获得的模拟数据与安捷伦等效电路的高级设计系统结果进行了比较。推导的等效电路模型已通过分析和数值仿真验证。

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