SIW Q-band filters using advanced multilayer PCB technology

S. Cadiou (1) , Cédric Quendo (1) , E. Schlaffer , W Pessl , A. Le Fevre , M. Brizoux , D Baudet

1 Lab-STICC_UBO_MOM_DIM

This paper deals with the design of Q-band filters using a low-cost multilayered Printed Circuit Board (PCB) substrate. In order to meet strong electrical specifications, the Substrate Integrated Waveguide (SIW) technique has been used to take profit of the complete build-up of the multilayered PCB. Advanced fabrication techniques of vias and micro-vias have also been developed in this project to implement 4th and 6th-order filters in this technology. The challenge here is to use a standard PCB process to design complex microwave devices that usually require accurate fabrication process and very low tolerances, especially in such frequency ranges. Based on that, two 2.8x8mm² prototypes have been designed, simulated and fabricated on a 1mm-thick PCB made of copper and blend of high performance resin material. Regarding the results of these filters, measured insertion & return losses are in a very good agreement with the simulation while exhibiting high rejections and low footprint.

Domaines: Electronique; Electromagnétisme

S. Cadiou, Cédric Quendo, E. Schlaffer, W Pessl, A. Le Fevre, et al.. SIW Q-band filters using advanced multilayer PCB technology. 44th European Microwave Conference, Oct 2014, Rome, Italy. ⟨hal-01132474⟩