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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Effective interpolation scheme for multi-resonant antenna responses: generalised Stoer??Bulirsch algorithm with adaptive sampling
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Effective interpolation scheme for multi-resonant antenna responses: generalised Stoer??Bulirsch algorithm with adaptive sampling

机译：多谐振天线响应的有效插值方案：带自适应采样的广义Stoer ?? Bulirsch算法

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摘要

Multiple analysis calls and high computational demand for each analysis present themselves as important bottlenecks in conducting practical electromagnetic design optimisation studies, particularly for complex material designs in metamaterial studies. To enable efficient re-analysis in such studies, the authors develop an algorithm for rational interpolation by generalising the Stoer??Bulirsch algorithm to allow for non-diagonal Neville paths rather than the known standard diagonal path to enhance its interpolation capability. The algorithm is then integrated to an adaptive sampling strategy that exploits the non-diagonality and finds an optimum Neville path that provides more efficient and reliable fittings for multi-resonance antenna response functions. The resulting technique is applied to return loss responses of antenna models with textured material substrates and complex conductor topologies. Interpolation results are compared with the performance of a standard Stoer??Bulirsch algorithm. Results show that the proposed generalised scheme outperforms the existing Stoer??Bulirsch technique in terms of computational accuracy by detecting resonances while still maintaining minimum number of support points. To demonstrate the capability of the proposed generalised algorithm, it is adapted to a large-scale antenna design optimisation example, achieving significant bandwidth performance enhancements for a novel antenna structure within practical timespans.
机译：在进行实用的电磁设计优化研究时，尤其是对于超材料研究中的复杂材料设计，进行多次分析调用和对每个分析的高计算需求本身就成为重要的瓶颈。为了能够在这样的研​​究中进行有效的重新分析，作者通过泛化Stoer ?? Bulirsch算法以允许非对角的Neville路径而不是已知的标准对角路径来开发一种用于合理插值的算法，以增强其插值能力。然后将该算法集成到自适应采样策略中，该策略利用非对角线性并找到最佳的Neville路径，从而为多谐振天线响应功能提供更有效，更可靠的拟合。所得技术被应用于具有纹理材料基底和复杂导体拓扑的天线模型的回波损耗响应。将插值结果与标准Stoer ?? Bulirsch算法的性能进行比较。结果表明，所提出的广义方案通过检测共振同时仍保持最少数量的支撑点，在计算精度方面优于现有的Stoer ?? Bulirsch技术。为了演示所提出的广义算法的功能，它适用于大规模天线设计优化示例，在实际的时间跨度内实现了新型天线结构的显着带宽性能增强。

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  • 来源
    《Microwaves, Antennas & Propagation, IET》 |2011年第15期|p.1849-1856|共8页
  • 作者

    El-Kahlout Y.; Kiziltas G.;

  • 作者单位

    Mechatronics Program, Sabanci University, Orhanli 34956, Tuzla, Istanbul, Turkey;

    TUBITAK Marmara Res Ctr, Energy Inst, TR-41470 Gebze, Kocaeli, Turkey;

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