3D Printed X‐Band Evanescent Mode Waveguide Filter Based on Pixelization Strategy

ABSTRACT

A 3D‐printed X‐band evanescent mode waveguide filter based on a pixelization strategy is proposed in this paper. The uniqueness of the filter lies in the exploitation of the evanescent mode waveguide in conjunction with a 3D‐printed dielectric pixelated structure. The crucial advantage of this approach is that the dielectric pixelated structure located in the waveguide does not require metal coating, significantly simplifying the fabrication process. The proposed filter is manufactured using fused deposition modeling (FDM) 3D print technology. Its measured transmission coefficient in the passband is below −1.67 dB, and the reflection coefficient is below −15 dB.