This work addresses geometry parameter scaling of multiband antennas for Internet of Things applications. The presented approach is comprehensive and permits redesign of the structure with respect to both the operating frequencies and material parameters of the dielectric substrate. A two‐step procedure is developed with the initial design obtained from an inverse surrogate model constructed using a set of appropriately prepared reference points and the final design identified through an iterative correction procedure. The latter is necessary in order to account for limited accuracy of the surrogate. The proposed approach is validated using a dual‐band microstrip patch antenna scaled over wide ranges of operating frequencies (1.5‐2.5 GHz for the lower band and 5.0‐6.0 GHz for the upper band), substrate thickness (0.7‐1.5 mm), and substrate permittivity (2.5‐3.5). The redesign cost corresponds to only up to three electromagnetic simulations of the antenna at hand. Reliability of the process is confirmed through experimental validation of the fabricated antenna prototypes.

中文翻译：

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根据工作条件和基板材料参数快速重新设计多频带天线

这项工作解决了用于物联网应用的多频带天线的几何参数缩放。所提出的方法是全面的，并且允许相对于介电基片的工作频率和材料参数重新设计结构。开发了一个两步程序，其初始设计是从使用一组适当准备的参考点构建的逆代理模型中获得的，而最终设计是通过迭代校正程序来确定的。后者是必需的，以便解决代理的有限准确性。所建议的方法已通过在宽工作频率范围（低频段为1.5-2.5 GHz，高频段为5.0-6.0 GHz），基板厚度（0.7-1.5毫米），和底物介电常数（2.5-3.5）。重新设计的成本仅相当于手头天线的最多三个电磁仿真。通过对制造的天线原型进行实验验证，可以确认过程的可靠性。