Design and Performance of Microstrip Diplexers: A Review

  • Salah I. Yahya (1) Department of Software Engineering , Faculty of Engineering, Koya University, Koya KOY45, Kurdistan Region; (2) Department of Communication and Computer Engineering, Cihan University-Erbil, Kurdistan Region http://orcid.org/0000-0002-2724-5118
  • Abbas Rezaei Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah http://orcid.org/0000-0003-0642-6726
  • Leila Noori (1) Institute of Research and Development, Duy Tan University, Da Nang, 550000; (2) Department of Electrical and Electronic Engineering, Duy Tan University, Da Nang 550000 http://orcid.org/0000-0003-0506-0478
Keywords: Microstrip, Diplexer, Bandpass-bandpass, Lowpass-bandpass, Multi-channel

Abstract

The radiofrequency microstrip diplexers are widely demanded nowadays by modern wireless communication systems. Hence, several types of previously reported microstrip diplexers are reviewed and investigated in this work. Microstrip diplexers are three ports devices used for separating desired signals and delivering them through two (or more) different channels. The diplexers are investigated in three categories of dual-channel bandpass-bandpass diplexers, multichannel diplexers, and lowpassbandpass diplexers. The investigated multi-channel diplexers include a number of four-channel, six-channel, and eight-channel diplexers. Due to the hard design process, the number of reported diplexers with more than four channels is limited. The layout structures and theory design methods of the previously reported diplexers are studied. Moreover, their size and performance are compared while some explanations about their advantages and disadvantages are presented. This comparison includes insertion loss, return loss, fractional bandwidths, isolation, selectivity, and gaps between channels.

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Author Biographies

Salah I. Yahya, (1) Department of Software Engineering , Faculty of Engineering, Koya University, Koya KOY45, Kurdistan Region; (2) Department of Communication and Computer Engineering, Cihan University-Erbil, Kurdistan Region
Salah I. Yahya is a Professor, joined the Department of Software Engineering at Koya University in 2010. He has a B.Sc. degree in Electrical Engineering, M.Sc. degree in Electronics and Communication Engineering and Ph.D. degree in Communication and Microwave Engineering. He is a Consultant at the Iraqi Engineering Union. Dr. Yahya has many scientific publications; (2) books [1] and [2], (28) Journal Articles and more than (31) conference papers. He is a senior member of the IEEE-USA and a member of AMTA-USASDIWC-Hong Kong. Dr. Yahya is a regular reviewer of the Electromagnetics Academy, Cambridge, USA, PIERS Journals publications, since 2009, Science and Engineering of Composite Materials journal and International Journal of Applied Electromagnetics and Mechanics, as well as, a regular reviewer of SDIWC conferences. His h-index is (7). (see TAP). Prof. Yahya is avisiting Professor at the Department of Communication and Computer Engineering, Cihan University-Erbil, Kurdistan Region, Iraq. [e-mail: salah.ismaeel@koyauniversity.org]
Abbas Rezaei, Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah

A. Rezaei is an Assistance Professor of Electrical Engineering in Kermanshah University of Technology. Abbas Rezaei received the B.Sc., M.Sc. and Ph.D. in Electronics Engineering from Razi University, Kerman-shah, Iran, in 2005, 2009 and 2013, respectively. His current research interests include RF and microwave circuits, computational intelligence and nanotechnology.

Leila Noori, (1) Institute of Research and Development, Duy Tan University, Da Nang, 550000; (2) Department of Electrical and Electronic Engineering, Duy Tan University, Da Nang 550000
Leila Noori is a staff member, with a Ph.D. degree, at the Faculty of Electrical - Electronic Engineering, Duy Tan University. She is also a researcher at the Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam

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Published
2020-03-15
How to Cite
Yahya, S. I., Rezaei, A. and Noori, L. (2020) “Design and Performance of Microstrip Diplexers: A Review”, ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 8(1), pp. 38-49. doi: 10.14500/aro.10634.
Section
Review Articles