Guarded printed circuit board islands

摘要

A device with low dielectric absorption includes a printed circuit board (PCB) (300), a component connection area (302) including a first conductor (310) layered on a top surface of the component connection area and a second conductor (316) layered on a bottom surface of the component connection area, an aperture (304) surrounding the component connection area, a low-leakage component (306, 308) connecting the component connection area to the PCB across the aperture, and a guard (314, 318) composed of a third conductor (314) at least substantially surrounding the aperture on a top surface of the PCB and a fourth conductor (318) at least substantially surrounding the aperture on a bottom surface of the PCB.