Modeling of Practical Substrate Thickness in Multilayer Printed Circuit Board for Millimeter-Wave Packaging

被引:0
作者
Lee, Dongmin [1 ]
Lee, Ahnwoo [1 ]
Kim, Minchul [2 ]
Choe, Wonseok [2 ]
Lee, Chungsik [3 ]
Yoon, Kwansun [3 ]
Jeong, Mingeun [3 ]
Kim, Junghyun [1 ]
机构
[1] Hanyang Univ, Dept Elect Engn, Ansan 15588, South Korea
[2] MMII Lab Corp, Seoul 05854, South Korea
[3] Daeduck Elect Co Ltd, Ansan 15602, South Korea
来源
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY | 2023年 / 13卷 / 04期
关键词
Copper foil residual ratio; dielectric thickness; fifth generation (5G); microstrip line; millimeter-wave (mm-wave); modeling; multilayer; passive component; printed circuit board (PCB); radio frequency (RF); system in package (SiP);
D O I
10.1109/TCPMT.2023.3267487
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This article proposes modeling of the practical substrate thickness so that it is possible to accurately design by predicting the dielectric thickness that varies for each circuit of a multilayer printed circuit board (PCB) in the manufacturing process. The amount of dielectric to be filled into the empty space of the pre-stacked metal layer varies depending on the ratio of pre-stacked metal to the entire area during the high-temperature and high-pressure process, so the dielectric thickness between the inner layer and the outer layer metal varies. When the patterns are complex and nonuniform in design, the difference in the ratio of the pre-stacked metal occurs between the entire area and the partial area of the strip. For this reason, the dielectric thicknesses are manufactured differently for each circuit. Therefore, this article proposes a practical dielectric thickness equation and a reference area to calculate the copper foil residual ratio. To find the optimal reference area for calculating the copper foil residual ratio, microstrip lines with the same width and length but different ratios of the surrounding pre-stacked metal were analyzed. Finally, a dielectric thickness prediction equation is proposed and verified not only on a multilayer substrate with a thickness of 40 mu m but also with 20 mu m to show that it is a highly reliable radio frequency (RF) modeling solution.
引用
收藏
页码:511 / 519
页数:9
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