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Artificially engineered capacitors for discrete high-frequency electronic circuitry
journal contribution
posted on 2019-09-23, 10:18 authored by Tom Whittaker, William WhittowWilliam Whittow, J. C. VardaxoglouThe concept of the artificially engineered capacitor (AEC) is presented as a 3D printable 3D capacitive component for the use in discrete RF/microwave electronic circuitry. The intention of the AEC concept is a highly customizable 3D printable component whose capacitance value is stable over a wider frequency band when compared to commercial alternatives. AECs can be viewed as impedance structures with predominantly capacitive characteristics. Both series and shunt AEC configurations are considered with simulation and measurement data along with equivalent circuit models. The tolerance of the equivalent capacitance over frequency is focused upon in this paper. Within the 40 % tolerance band from the nominal value an improvement of 26 % and 197 % frequency band was achieved for the series and shunt variants respectively when compared to a commercial alternative. Further simulations show that with finer 3D printing resolutions, this frequency stable bandwidth can be further increased. Finally, an example design application of a halfwavelength microstrip resonator is presented in which the AECs’ Q factor is measured, and the its equivalent circuits are implemented and validated via simulations and measurements.
Funding
This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) and is part of the SYMETA project (https://www.symeta.co.uk). Grant reference code: EP/N010493/1.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Transactions on Microwave Theory and TechniquesVolume
68Issue
1Pages
74 - 86Publisher
Institute of Electrical and Electronics EngineersVersion
- VoR (Version of Record)
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© The authorsPublisher statement
This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/Acceptance date
2019-09-10Publication date
2019-12-06ISSN
0018-9480eISSN
1557-9670Publisher version
Language
- en
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Tom WhittakerUsage metrics
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