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LPF/dual-BPF/UWB-BPF reconfiguration utilizing DGS resonators and lumped capacitors

Published online by Cambridge University Press:  25 November 2022

Hesham A. Mohamed Open the ORCID record for Hesham A. Mohamed [Opens in a new window] ,
Wael A. E. Ali Open the ORCID record for Wael A. E. Ali [Opens in a new window]  and
Ahmed A. Ibrahim Open the ORCID record for Ahmed A. Ibrahim [Opens in a new window]
Hesham A. Mohamed
Affiliation:
Electronics Research Institute, El-Nozha El-Gadida, Cairo 11843, Egypt
Wael A. E. Ali
Affiliation:
Arab Academy for Science, Technology & Maritime Transport (AASTMT), Alexandria, Egypt
Ahmed A. Ibrahim*
Affiliation:
Communications and Electronics Engineering Department, Minia University, Minia, Egypt
*
Author for correspondence: Ahmed A. Ibrahim, E-mail: ahmedabdel_monem@mu.edu.eg
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Abstract

In this work, three successive filter models based on defected ground structure (DGS) techniques are designed, fabricated, and tested to be utilized for different wireless applications. The filters are printed on a RO5880 substrate of an overall size of 22 × 11 × 0.8 mm3. Three DGSs are etched from the ground plane to achieve the suggested band stop features for all frequencies above 10 GHz. The first model is a low-pass filter that succeeded to pass all frequencies below 10 GHz, the second model is a bandpass filter that operated at 4.5 and 9 GHz after using a pair of interdigital capacitors, and the third model covered all ultra-wideband frequency range when a pair of lumped capacitors is utilized instead of the interdigital capacitors. Good consistency between simulated and measured outcomes is achieved for each of the three filters confirming their suitability to be embedded in small-sized wireless devices.

Keywords

BPFDGSfan-shapedinterdigital capacitorLPFlumped capacitor
Type
Filters
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 7 , September 2023 , pp. 1108 - 1116
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Copyright
© The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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