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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Rapid analysis and optimization of planar Yagi-Uda dipole arrays printed on a dielectric substrate
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Rapid analysis and optimization of planar Yagi-Uda dipole arrays printed on a dielectric substrate

机译：快速分析和优化印刷在介电基片上的平面八木-宇田偶极子阵列

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摘要

Planar antenna modeling requires a constrained solution space and open boundaries and so is highly computationally intensive. One of the methods used to overcome this is by using method of moments simulation. The method of moments is a highly efficient method of solving wire antenna structures and is commonly used in antenna optimization. A method of transforming a wire antenna structure to a planar antenna structure is presented using a 4-element Yagi-Uda antenna designed to resonate at 905 MHz. The wire to planar transformation is based on the circular cross section wire to planar strip, a spacing adjustment based on interelement capacitance, and a length scaling to compensate for the change in effective permittivity. The planar antenna shows slightly improved impedance performance at the resonance [voltage standing wave ratio (VSWR) = 1.39]. This transformation decreased the antenna footprint by 15.11% after conversion for a wire antenna to a planar antenna in air with similar radiation characteristics and on FR4 (1.6 mm thickness), the footprint increased by 52%. The antenna simulation time was reduced from 15 min using finite element method to less than 10 s for one cycle by using the method of moments solver. All antenna properties are essentially unchanged. © 2013 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:184–190, 2014.
机译：平面天线建模需要有限的解空间和开放边界，因此计算量很大。克服这一问题的方法之一是使用力矩模拟方法。矩量法是一种解决有线天线结构的高效方法，通常用于天线优化。提出了一种使用设计为在905 MHz谐振的4元素八木-宇田天线将有线天线结构转换为平面天线结构的方法。导线到平面的转换基于导线到平面带的圆形横截面，基于元素间电容的间距调整以及补偿有效介电常数变化的长度缩放。平面天线在谐振时的阻抗性能略有改善[电压驻波比（VSWR）= 1.39]。在将具有类似辐射特性的空气中的线形天线转换为平面天线之后，在FR4（1.6毫米厚）上，此转换将天线占位面积减少了15.11％，占位面积增加了52％。通过使用矩量求解器的方法，天线仿真时间从使用有限元方法的15分钟减少到一个周期的10 s以内，少于10 s。所有天线特性基本不变。 ©2013 Wiley Periodicals，Inc.国际J RF和微波CAE 24：184–190，2014年。

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