Impact of Physical Dimensions and Dielectric Materials in Fuzz Button Interconnection Area on Signal Transmission

Wang, Wenjia; Gao, Jinchun; Flowers, George T.; Wang, Ziren; Luo, Junyu; Yi, Wei

doi:10.1109/hlm51431.2021.9671142

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Carter 12 developed an equivalent circuit model for a fuzz button consisting of resistances, capacitances, and inductances, and demonstrated that fuzz buttons can reduce the skin effect due to their complex internal contact structure. Wang et al 13 simulated the impact of physical dimensions and material parameters of fuzz buttons in a vertical connection area on circuit impedance by finite element analysis software. Xia et al 14 proposed a high‐efficiency electromagnetically trained‐support vector regression (EM‐SVR) approach to design and optimize high‐density packaging structures with fuzz button connectors.…”

Section: Introductionmentioning

confidence: 99%

Investigation of signal integrity of fuzz button connectors under different compression states

Wang

Gao

Flowers

et al. 2023

Micro & Optical Tech Letters

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Fuzz button connectors are extensively used in vertical interconnection for high‐density integrated circuits. This work studied the impact of fuzz buttons under different compression states on high‐frequency signal transmission using theoretical analysis and experimental testing. The resistance values for fuzz buttons with different heights in compression states were measured. The physical dimensions were obtained for sample fuzz buttons subjected to various compression states. The effects of long‐term compression of fuzz button on the resistance values and S parameters of the device under test (DUT) were analyzed. In addition, the high‐frequency parameters were measured for the DUT with fuzz buttons in various compression states. Both a three‐dimensional (3D) electromagnetic field model and an equivalent circuit model for the fuzz buttons under compression states were developed and the results of these two models show good agreement with experimental results. In the circuit model, a fuzz button connector with a three‐wire transmission line structure was modeled as a π impedance network, composed of equivalent inductances and capacitances. It was found that the proposed 3D electromagnetic field model and an equivalent circuit model can accurately predict the effect of fuzz buttons under different compression states on the signal transmission in the affected frequency band. However, the models cannot evaluate the communication performance of the whole system.

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Section: Introductionmentioning

confidence: 99%