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相关概念视频

Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

59
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
59
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

85
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
85

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相关实验视频

Updated: May 25, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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通过帕雷托-最佳合成策略进行细化的线性光学分相阵列设计.

Xueqing Yang1,2, Nicola Anselmi1,2, Paolo Rocca1,2,3

  • 1ELEDIA Research Unit, CNIT-University of Trento, Via Sommarive 9, 38123 Trento, Italy.

Sensors (Basel, Switzerland)
|February 26, 2025
PubMed
概括

这项研究通过战略性地去除元素来优化稀释线性光学相位阵列 (OPA) 的设计. 目标是减少组件数量,同时保持性能,使用波导网格天线 (WGA) 的多目标优化.

关键词:
多目标优化多目标优化光学相位阵列 (OPAs) 是一种光学相位阵列.稀释的数组是稀释的数组.波导网格天线 (WGA) 波导网格天线

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科学领域:

  • 光子学 是一个光子学.
  • 天线工程天线工程
  • 优化技术 优化技术

背景情况:

  • 线性光学分相阵列 (OPA) 对于光束转向至关重要.
  • 完全拥挤的数组可能是复杂和昂贵的.
  • 稀释阵列为减少复杂性和成本提供了一条道路.

研究的目的:

  • 为设计稀释线性OPAs制定一个优化策略.
  • 为了最大限度地减少OPA中天线元件的数量.
  • 为了保持低的侧叶水平和狭窄的光束宽度在稀薄的OPA中.

主要方法:

  • 公式元素选择作为一个优化问题.
  • 采用一个多目标优化策略.
  • 使用现实的波导网格天线 (WGA) 建模.

主要成果:

  • 一种定义线性OPA最佳稀释架构的方法.
  • 演示减少元素数量,同时保持性能.
  • 使用WGA建模对拟方法的评估.

结论:

  • 拟议的多目标优化有效地设计了稀释的线性OPA.
  • 这种方法平衡了组件减少与所需的光束特性.
  • 该方法显示了实际OPA设计和实施的潜力.