Multilayer C-band DBR planar filter integrating lowpass filters to control spurious electrical response

We, here, report on the design of a high rejection multilayer C-band bandpass filter for a specific spatial application. The topology uses Dual Behavior Resonators @BR) in order to obtain a high rejection level thanks to additional transmission zeros. The relative locations of these ones just nearby the bandpass are clearly ease by the use of the multilayer technology. This one allows a large achievable characteristic impedance range by associating two appropriate line configurations, i.e. TFMS (Thin Film Microstrip) and 3D-CPW OD-Coplanar Waveguide). Furthermore, the integration of lowpass filters in a handpass filter enhanced the electrical response in the upper attenuated band.