In this paper, focus is on a bandpass filter based on a mix of both Substrate Integrated Waveguide (SIW) and planar approach. The filter under study must meet electrical specifications in C-band for a space application. It is a 4thorder filter built from the association of Hybrid Planar Waveguide Resonators (HPWRs) and Dual Behavior Resonators (DBRs) which presents intrinsically transmission zeros. As filter is aimed to be used in a space environment, additional considerations such as sensitivity to the packaging, size and thermal behavior have to be taken into account. The results from experiments are compared to the simulated data.