Substrate Integrated Waveguide

A Substrate Integrated Waveguide (SIW) is a technology used to guide high-frequency radio signals on a flat surface, integrating waveguide features into a printed circuit board. It consists of a dielectric layer (like a ceramic material) with metalized rows of holes or strips that form a confined path for electromagnetic waves. This approach combines the low-loss and high-performance characteristics of traditional metal waveguides with the compact, cost-effective manufacturing of printed circuit boards, making it ideal for applications like radar, wireless communications, and satellite systems.