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Electromagnetic bandgap EBG structures using combined inductive and capacitive elements and chirpingandtapering technique

Electromagnetic bandgap EBG structures using combined inductive and capacitive elements and... Purpose To perform studies and comparisons on the electromagnetic bandgap EBG structures, which are constructed by using a combination of inductive and capacitive elements printed on guidedwave transmission lines, and by applying a chirpingandtapering technique.Designmethodologyapproach An inhouse solver based on finitedifference timedomain FDTD method is adopted for analysis. Conventionally, EBG characteristics are formed by a series of perforations, considered as capacitive elements, on the ground planes. To enhance the performance, an additional inductive element is implemented, which is realized by narrowing the strip over the respective perforated regions. For further enhancement, a chirpingandtapering technique is applied on the combined EBG structures for comparisons.Findings Through scattering parameter analysis, it was found that the EBG structures using combined inductive and capacitive elements exhibit a bandgap behavior superior to the ones built with only inductive or capacitive elements. In another set of comparisons, the modified EBG structures combined with a chirpingandtapering technique resulted in further widening of bandgap, as well as lower sidelobes and a smoother transition towards the bandgap region.Research limitationsimplications Research was mainly limited to studying solely the EBG structures printed on guidedwave transmission lines.Practical implications The proposed EBG structures may be applied into various areas, such as microelectronics and mobile communications for harmonic suppressions, and into other practical electronic circuit structures.Originalityvalue The ideas on applying combined inductive and capacitive elements on various guidedwave transmission lines to induce EBG characteristics, together with applications of a chirpingandtapering technique on the combined EBG structures give rise to the research originality. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microelectronics International Emerald Publishing

Electromagnetic bandgap EBG structures using combined inductive and capacitive elements and chirpingandtapering technique

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
1356-5362
DOI
10.1108/13565360810846590
Publisher site
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Abstract

Purpose To perform studies and comparisons on the electromagnetic bandgap EBG structures, which are constructed by using a combination of inductive and capacitive elements printed on guidedwave transmission lines, and by applying a chirpingandtapering technique.Designmethodologyapproach An inhouse solver based on finitedifference timedomain FDTD method is adopted for analysis. Conventionally, EBG characteristics are formed by a series of perforations, considered as capacitive elements, on the ground planes. To enhance the performance, an additional inductive element is implemented, which is realized by narrowing the strip over the respective perforated regions. For further enhancement, a chirpingandtapering technique is applied on the combined EBG structures for comparisons.Findings Through scattering parameter analysis, it was found that the EBG structures using combined inductive and capacitive elements exhibit a bandgap behavior superior to the ones built with only inductive or capacitive elements. In another set of comparisons, the modified EBG structures combined with a chirpingandtapering technique resulted in further widening of bandgap, as well as lower sidelobes and a smoother transition towards the bandgap region.Research limitationsimplications Research was mainly limited to studying solely the EBG structures printed on guidedwave transmission lines.Practical implications The proposed EBG structures may be applied into various areas, such as microelectronics and mobile communications for harmonic suppressions, and into other practical electronic circuit structures.Originalityvalue The ideas on applying combined inductive and capacitive elements on various guidedwave transmission lines to induce EBG characteristics, together with applications of a chirpingandtapering technique on the combined EBG structures give rise to the research originality.

Journal

Microelectronics International – Emerald Publishing

Published: Dec 28, 2007

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