Professor Salah I. Yahya from the Department of Software Engineering, Faculty of Engineering at Koya University with a research group from Iran, Vietnam and Malaysia published a research article entitled “A Novel Miniaturized Microstrip Lowpass-bandpass Diplexer Using Patch and Interdigital Cells for Wireless Networks” in the AEU - International Journal of Electronics and Communications.
About the author:
Name: Salah I. Yahya
Qualification: Ph.D.
Academic rank: Professor
Affiiliation: Department of Software Enginering, Faculty of Engineering, Koya University
TAP: http://sites.koyauniversity.org/salah-ismaeel/
Google Scholar account: https://scholar.google.com/citations?user=jXO8SZkAAAAJ&hl=en
ORCID account: https://orcid.org/0000-0002-2724-5118
Publons account: https://researcherid.com/rid/A-9661-2017
Journal Coverage
Title: AEU - International Journal of Electronics and Communications
Clarivate Analytics (Wos: IF = 2.924)
Science Citation Index
Science Citation Index Expanded
SCOPUS: Q2
Publisher: Elsevier GMBH
Country: Netherland
About the Paper:
Title: A Novel Miniaturized Microstrip Lowpass-bandpass Diplexer Using Patch and Interdigital Cells for Wireless Networks
DOI: https://doi.org/10.1016/j.aeue.2020.153404
Abstract:
This paper presents a novel design of lowpass-bandpass microstrip diplexer using patch and interdigital cells. In comparison with the previously reported lowpass-bandpass diplexers, the proposed design has the most compact size with the overall area of 0.018 λg2 (351.7 mm2) fabricated on 0.787 mm dielectric substrate height. The lowpass channel has a cut-off frequency (fc) at 1.57 GHz. The resonance frequency of the bandpass channel is located at 3.35 GHz, which is suitable for WiMAX applications. Having low insertion losses at the lowpass and bandpass channels is another feature of this work. For the frequencies above the bandpass channel, the harmonics are attenuated up to 2.8 fc. A theory method is presented to show the behavior of the proposed structure. Finally, the designed diplexer is fabricated and measured, where the simulation results match well with the measurements.
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Koya University (KOU) is located in the city of Koya (Koy Sanjaq) which is 1.0 hr drive to the East of the Kurdistan Region capital Erbil (Arbil, Hewlér) in Kurdistan Region of F.R. Iraq. It is on the foothills of beautiful high mountain. Its campus has been carefully laid out to embrace the beautiful mountainous nature. . There are 4 Faculties and 2 Schools in KOU; Faculty of Engineering (FENG), Faculty of Science and Health (FSCH), Faculty of Education (FEDU), Faculty of Humanities and Social Silences (FHSS), Shcool of Physical Education (SPHE) and School of Medicine (SMED). Also, there are two research centers; Genome Center and Malai Gawra Center. Moreover, at KOU there is an English Language Center (BELC) at KOU has been opened with the sponsorship of IREX and American embassy in Baghdad as well as with the support of Spring International Language Center of The University of Arkansas. KOU has two Scientific Journals; ARO-The Scientific Journal of Koya University, which is indexed by Clarivate Analytics (ESCI), and Koya University Journal of Humanities and Social Sciences (KUJHSS). KOU is a proactive member of Erasmus/ Marhaba Project and Erasmus+. KOU signed many Memorandum of Understandings (MoU) with many International Universities, e.g., The University of Arkansas (June 2015). The Lulea University in Sweden (April 2014), The University of Nottingham in the UK, The University of Buckingham in the UK (Oct 2008), Belkin University in Turkey (Sep 2009) and The University of Greenwich in the UK.
