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In the past, high-frequency communication applications put emphasis on low loss while high speed signal transmission is required to achieve the integrity of the signal. In order to ensure the target of low loss on the CCL materials, most studies focus on how to reduce the polarity for resin system to achieve low Dk and low tan ?? to improve the signal characteristics of high-speed transmission. The...
In this paper, a microstrip line is used for extracting the frequency dependent material properties such as dielectric constant, attenuation constant, and loss tangent of ten different printed circuit boards (PCBs). Besides the better electric properties, the LD materials with excellent heat resistance can meet high temperature lead free process.
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