3D Metal Printed Deformed Elliptical Cavity Bandpass Filter with Wide Stopband

This paper presents a deformed elliptical cavity resonator that allows the control of transmission zeros (TZs) over an extensive frequency range. These TZs can improve filter selectivity and suppress spurious modes to give the filter a wide stopband with high rejection. A building block is analysed,...

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Bibliographic Details
Published in2021 51st European Microwave Conference (EuMC) pp. 704 - 707
Main Authors Vaitukaitis, Povilas, Nai, Kenneth, Rao, Jiayu, Hong, Jiasheng
Format Conference Proceeding
LanguageEnglish
Published European Microwave Association 04.04.2022
Subjects
3D metal printing
Band-pass filters
Bandpass waveguide filter
deformed cavity resonator
Metals
Microwave technology
Resonant frequency
Resonator filters
Solid modeling
spurious suppression
Three-dimensional displays
wide stopband
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Summary:This paper presents a deformed elliptical cavity resonator that allows the control of transmission zeros (TZs) over an extensive frequency range. These TZs can improve filter selectivity and suppress spurious modes to give the filter a wide stopband with high rejection. A building block is analysed, and the theory explained with control of TZ illustrated. Two Ku-band bandpass filter models, 4- and 8-pole, are presented. The 4-pole model was 3D printed using Selective Laser Melting (SLM) and tested without any internal surface post-processing. The measured results agree well with the simulations.
DOI:10.23919/EuMC50147.2022.9784287