Speaker
Paul Booth
(Airbus Defence and Space Ltd)
Description
The presentation will describe the development of resonator and coupling architectures that enhance the insertion loss and far out of band rejection of single mode waveguide filters. The inherent geometrical freedom of 3D additive manufacturing techniques is exploited to realize complex geometries monolithically. It also has the added benefit of reduced manufacturing lead time. Resonator and coupling structures using complex geometries are introduced and examples of manufactured direct-coupled-cavity filters are given. Analysis and measurements show excellent agreement.
JUSTIFICATION FOR THE CONSIDERATION
The presentation is relevant to the discussion as it demonstrates advantages of AM in realising structures that are difficult manufacture using conventional subtractive techniques. A great deal of initial work using AM concentrated on trying to reproduce traditional designs with varying degrees of success. This is understandable given the software available to design and analyse such structures quickly and efficiently. However, depending on the manufacturing technique chosen, the end product can be disappointing due to surface roughness, dimensional tolerance or ‘sag’ during the build. It is believed that the structures presented help to overcome many of these problems.
Primary author
Paul Booth
(Airbus Defence and Space Ltd)
Co-author
Elena Valles Lluch
(Airbus Defence and Space)
