Additive manufacturing of interdigital filters with arbitrary line cross section

Show simple item record Venter, J.J.P. (Johannes) Maharaj, Riddhi Stander, Tinus 2021-06-10T14:39:45Z 2021-06-10T14:39:45Z 2020-04
dc.description.abstract This article investigates the novel use of additive manufacturing (AM) in the production of interdigital cavity filters. It is found that AM enables the production of interdigitated pins of complex cross-sectional geometry, leading to the development of a suitable synthesis method using a commonly available 2-D eigenmode port impedance solver. The method is validated by manufacturing an L-band interdigital filter of 70% fractional bandwidth with triangular bars through selective laser melting, as well as a classical design using rectangular bars. It is found that triangular bars obtain similar coupling to rectangular bars over the average of 35% wider spacing gaps, reducing its sensitivity to manufacturing error. In addition, neither filter requires postproduction tuning, although the bars do warp slightly during printing. These results illustrate the advantages of using AM for the synthesis of wideband interdigital filters. en_ZA
dc.description.department Electrical, Electronic and Computer Engineering en_ZA
dc.description.librarian hj2021 en_ZA
dc.description.sponsorship NewSpace Systems en_ZA
dc.description.uri en_ZA
dc.identifier.citation J.J.P. Venter, R. Maharaj and T. Stander, "Additive Manufacturing of Interdigital Filters With Arbitrary Line Cross Section," in IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 10, no. 4, pp. 686-693, April 2020, doi: 10.1109/TCPMT.2020.2967807. en_ZA
dc.identifier.issn 2156-3950 (print)
dc.identifier.issn 2156-3985 (online)
dc.identifier.other 10.1109/TCPMT.2020.2967807
dc.language.iso en en_ZA
dc.publisher Institute of Electrical and Electronics Engineers en_ZA
dc.rights © 2020 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. en_ZA
dc.subject Additive manufacturing (AM) en_ZA
dc.subject Bandpass filters en_ZA
dc.subject Interdigital filters en_ZA
dc.subject Microwave filters en_ZA
dc.subject Selective laser melting (SLM) en_ZA
dc.subject TEM-line filters en_ZA
dc.subject Wideband filters en_ZA
dc.subject Bars en_ZA
dc.subject Capacitance en_ZA
dc.subject Surface roughness en_ZA
dc.subject Rough surfaces en_ZA
dc.subject Geometry en_ZA
dc.title Additive manufacturing of interdigital filters with arbitrary line cross section en_ZA
dc.type Postprint Article en_ZA

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