In the world of printed circuit boards (PCBs or PC boards), FR-4 has been the “go to” substrate for decades. (There was an industry attempt to call them printed wiring boards—PW boards or PWBs—that ...

Is plain old FR-4 (also known as “Glass Epoxy”) PCB material suitable for use in RF designs[1]? This question comes up time and again. Many say no, fewer say yes – who's right? As I have published ...

Although alternatives to good old FR-4 exist, it remains the pc-board material of choice for most applications. It's inexpensive and well understood in terms of manufacturing. In high-end applications ...