Synthesis of Rectangular Waveguide Filters With Smooth Profile Oriented to Direct Metal Additive Manufacturing

In this article, a novel design method for rectangular waveguide filters intended fabrication using direct metal additive manufacturing (AM) is proposed. The synthesized will feature smooth profile that allows us to fabricate them orienting the filter propagation axis in vertical building direction, achieving an optimum configuration AM fabrication. valid any all-pole transfer function, which initially implemented with commensurate-line distributed unit element prototype. impulse response of initial prototype then properly interpolated obtain target smooth-profiled similar length and excursion. Finally, just generated technology employing inverse scattering synthesis technique relies on coupled-mode theory model electromagnetic behavior filter. general also case very high rejection levels, great relevance technology. A Ku-band low-pass stringent satellite specifications designed proposed method, fabricated by means technique, measured vector network analyzer. good agreement achieved between simulated results, fulfilling required demonstrating feasibility performance method.