Integration of ridge waveguide filter in printed circuit board

We propose a new simple technique for the integration of ridge waveguide filter in printed circuit board. The proposed technique for manufacture allows easy integration on board with active devices. The manufacture is very simple, low cost, and fast in processing. Several design examples are included to illustrate the approach. The simulation results obtained from the full-wave mode matching technique (MMT) and Finite Element method (FEM) are in very good agreement.