Additively Manufactured RF Filter with Lattice Stiffening

The patent combines multiple separately machined parts (body, iris structures, coupling structures, stiffening elements) into a single monolithic component manufactured by additive manufacturing. This integration eliminates the need for hand assembly of multiple parts while maintaining the required dimensional tolerances through the precision of the additive manufacturing process itself.

The single additively manufactured component simultaneously performs multiple functions: it provides the waveguide body structure, contains the iris structures for filtering, incorporates coupling structures for resonator interaction, and includes stiffening elements for structural support. This multi-functionality in one component resolves the contradiction by eliminating assembly steps while maintaining all necessary functional precision.

The design incorporates built-in stiffening structures (lattice work and triangular bracing) that are created during the additive manufacturing process itself. These stiffening elements prevent warping and deformation during manufacturing by providing internal structural support, thereby maintaining dimensional tolerance while enabling the use of additive manufacturing for improved productivity.

The patent applies stiffening structures selectively at critical locations within the waveguide body where structural support is most needed to prevent warping and maintain precision. The lattice work and triangular bracing are strategically positioned to provide local reinforcement without adding excessive material, thus maintaining manufacturing precision while enabling additive manufacturing productivity.

The patent incorporates lattice work and triangular bracing that create a controlled porous or open-cell structure within the waveguide body. These internal structures provide structural strength and stiffness while minimizing material usage. The lattice geometry maintains the required filter shape and dimensional tolerance while preventing the warping and cracking that would occur with solid structures subjected to the same manufacturing process.

The design effectively creates a composite structure where the lattice work and triangular bracing form an integrated reinforcement system within the waveguide body. This composite approach provides both the required geometric precision for filtering and the structural strength to prevent deformation, resolving the contradiction between shape and strength in additively manufactured filters.