Materials Measurement: PCB Materials Test
애플리케이션 노트
Overview
The dielectric properties measurement such as relative permittivity (dielectric constant: Dk) and dielectric loss tangent (dissipation factor: Df) is essential for the development and quality assurance of PCB materials. Traditionally, the dielectric properties of PCB materials for commercial use have been tested at relatively low frequencies such as 1 MHz and 1 GHz. The required measurement frequencies are being increased in line with the trend to higher data transfer speeds for mobile handsets, PCs and tablet devices. For example, PCB materials for wireless communication devices are tested at frequency points between 1 GHz and 10 GHz frequency range.
Solution
The resonant cavity method provides high accuracy in the measurement at specific resonant frequency points.