Substrate Integrated Radiating Waveguides with a Coaxial Feed

In the present paper the study of coaxially fed substrate integrated waveguides (SIW) structures is presented. A novel feed configuration is proposed consisting of a ring loaded coaxial probe. The analysis of the structure is carried out with the method of moments and with FEM (HFSS). Applications to radiating SIW will be presented. (4 pages)