3-D-Printing and High-Precision Milling of W-Band Filter Components With Admittance Inverter Sequences

This work presents the design of an additively manufactured W-band bandpass filter and a subtractively diplexer to demonstrate use admittance inverter sequences for ease manufacture at millimeter-wave frequencies. Contrary typical impedance inverters (E-plane H-plane irises), stubs) allows larger dimensions be specified ultimately does not impede general waveguide path. The proposed is designed with all E-plane stubs, while one branch using both stubs as arbitrary sequence, second irises. fabricated most elementary-level stereolithography (SLA)-based methods, demonstrating that hobbyist-type SLA printer metallization method can procure exceptional results designs. high-precision computer numerical control (CNC) milling highlight in more complex robust profile, dispersive transmission zeros are caused by over-moding used unique isolation characteristics upper region. concepts, fabrication profiles, simulations, measurements which presented this viable option overcoming miniaturized millimeter submillimeter-wave applications.