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FR4 介电分析的进展：自由空间法及测量验证。

Advancements in FR4 dielectric analysis: Free space approach and measurement validation.

机构信息

Department of Computer Science, Federal Urdu University Arts and Science Technology, Karachi, Sindh, Pakistan.

Faculty of Engineering and Computer Science, Millennium Institute of Technology and Entrepreneurship, Karachi, Pakistan.

出版信息

PLoS One. 2024 Sep 12;19(9):e0305614. doi: 10.1371/journal.pone.0305614. eCollection 2024.

DOI:10.1371/journal.pone.0305614
PMID:39265140
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11392535/
Abstract

In this study, the free space approach is utilized to calculate the relative permittivity of FR4 by utilizing the Nicholson-Ross-Weir Conversion. By examining the scattering characteristics, the free space technique offers a practical tool for describing dielectric materials. The simulations were run on CST-2019, and the frequency range of 8.5 GHz to 11.5 GHz was chosen. Experimental measurements were carried out utilizing a Vector Network Analyzer, To further reduce outside influences and assure accurate measurements in a controlled setting, an anechoic chamber was used. The outcomes of the simulations and actual measurements show the significance of the Nicholson- Ross-Weir Conversion and free space approach in calculating the relative permittivity of FR4. The correctness and dependability of the suggested technique are confirmed by the good agreement between the simulated and measured outcomes. This study makes a contribution to the field of electromagnetic characterization and offers a useful method for figuring out FR4's dielectric characteristics. The results of this study have substantial effects on PCB design and optimization as well as other high-frequency electronic devices that operate in the frequency band under consideration.

摘要

在这项研究中，利用尼科尔斯-罗斯-韦尔转换（Nicholson-Ross-Weir Conversion），采用自由空间方法来计算 FR4 的相对介电常数。通过研究散射特性，自由空间技术为描述介电材料提供了一种实用工具。模拟在 CST-2019 上进行，频率范围为 8.5GHz 至 11.5GHz。利用矢量网络分析仪进行了实验测量。为了进一步减少外部影响并在受控环境中确保准确测量，使用了吸声室。模拟和实际测量的结果表明，尼科尔斯-罗斯-韦尔转换和自由空间方法在计算 FR4 的相对介电常数方面的重要性。通过模拟和测量结果之间的良好一致性，证实了所提出技术的正确性和可靠性。这项研究为电磁特性表征领域做出了贡献，为确定 FR4 的介电特性提供了一种有用的方法。这项研究的结果对 PCB 设计和优化以及在考虑的频带内工作的其他高频电子设备有重大影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/97af1bacf297/pone.0305614.g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/c7876127722c/pone.0305614.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/0f436b7d99f9/pone.0305614.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/80d6e481b999/pone.0305614.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/3e0f98ba8c29/pone.0305614.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/bbc97c913414/pone.0305614.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/10ffad01b55c/pone.0305614.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/79a64d582442/pone.0305614.g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/40913e9a8717/pone.0305614.g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/27ad2c347b84/pone.0305614.g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/97af1bacf297/pone.0305614.g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/c7876127722c/pone.0305614.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/0f436b7d99f9/pone.0305614.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/80d6e481b999/pone.0305614.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/3e0f98ba8c29/pone.0305614.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/bbc97c913414/pone.0305614.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/10ffad01b55c/pone.0305614.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/79a64d582442/pone.0305614.g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/40913e9a8717/pone.0305614.g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/27ad2c347b84/pone.0305614.g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f094/11392535/97af1bacf297/pone.0305614.g010.jpg

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