Patent ID: 8643448

Claim:
An RF directional coupler comprising: a printed circuit board substrate configured to contain at least an RF coupler circuit and including a top surface and a bottom surface, said printed circuit board substrate including: a first, electrically conductive line, said first electrically conductive line including an input and an output, and configured for carrying a main signal whose energy is desired to be monitored; at least a second electrically conductive line, said at least a second electrically conductive line including an input and an output, said at least a second electrically conductive line disposed a predetermined distance away from said first, electrically conductive line on said printed circuit boards substrate and configured for electrically coupling at least a portion of said energy from said first, electrically conductive line; and wherein each of said first and at least a second electrically conductive lines are configured as electrically plated troughs having a predetermined width and a predetermined height; a base carrier substrate, configured to attach to said bottom surface of said printed circuit board substrate; and a top carrier substrate, configured to attach to said upper surface of the printed circuit board substrate.