Design Notes for Laminates and Other Substrate Materials

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  • Author: Gary Breed
The final realization of a circuit design is its construction on a substrate of some sort. The most common substrate for high frequency circuits is a printed circuit board, which may range from a low cost fiberglass laminate such as FR-4 to an advanced low dielectric constant glass reinforced PTFE or ceramic/hydrocarbon laminates intended specifically for microwave circuits.