In this paper, we present narrow-band substrate integrated waveguide (SIW) millimeter\nwave band-pass filters, designed using cyclo-olefin polymers (COP). The structures were molded,\ndrilled, and metalized with a laser direct structuring (LDS) process. COP are a type of thermoplastic\nwith low dielectric losses in the millimeter waveband, typically 7.5 X 10-4 at 40 GHz for the COP\nRS420-LDS from Zeon. The body of the filter was realized using a molding process that facilitates\nthe combination of thin 50 ohms microstrip access lines with high thickness microwave cavities through\n3D transitions, thus making high quality factors attainable. The simulations and experimental results\nare presented and discussed.
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