Why Do High-Frequency PCB Materials Have Low DK/Df Values?
High-frequency PCBs should have low DK and Df. DK affects impedance line width, and Df affects attenuation of the signal in different frequency domains.
PCB Substrates: Knowing PCB Dielectric Materials - Sierra Circuits
Nov 17, 2022 · Input a specific material property or properties, and the tool will give you a list of high and low Dk PCB materials that meet your requirements. The tool also provides an easy-to-use comparison table that lets you compare the detailed properties of …
Just How Constant Is the Dielectric Constant of PCB Materials?
Sep 16, 2020 · A PCB laminate dielectric constant is not really constant at high frequencies. Here's how variations in dielectric constant of PCB materials affect power and signals.
PCB Material Selection Guide | San Francisco Circuits
San Francisco Circuits’ PCB Material Reference Guide covers key characteristics of circuit materials including dielectric constant (Dk), dissipation factor (Df), thermal conductivity (TC), & coefficient of thermal expansion (CTE).
What is Dk and Df in PCB: A Complete Guide for High-Speed …
Apr 8, 2025 · In this comprehensive article, we’ll explore what Dk and Df mean, how they impact PCB design, how to choose the right materials, and the role these parameters play in RF, microwave, and high-speed digital systems.
Abstract This paper will focus on understanding the dielectric constant (dk) of high frequency laminate materials. The dissipation factor (df) and other electrical properties will be discussed as well, however in less detail.
PCB Material Properties and Their Impact on Performance of High ...
Jul 5, 2023 · Understanding PCB material parameters such as relative permittivity and loss tangent allows us to discuss some important considerations for choosing the right material when designing a high-speed/high-frequency application.
The dielectric constant (Dk) and dissipation factor (Df) of printed circuit board (PCB) laminate materials are affected by the proportions of certain raw materials (resin, fiberglass, and optionally, filler) present in the finished product [1-7].
df: The dissipation factor (df) is a measure of loss-rate of energy of a mode of oscillation in a dissipative system. It is the reciprocal of quality factor Q, which represents the quality of oscillation. This allows judgments of frequency performance of …
Correlated measured DUT, HFSS and X2D2 using various frequency-dependent DK, DF and roughness models. Showed how to equate effective conductivity to Huray model.