A Compact Bandstop Filter Design Using DMS-DGS Technique for Radar Applications

Authors

  • Burak Dokmetas Department of Electrical and Electronics Engineering, Gazi University, Ankara, Turkey
  • Galip Orkun Arican ASELSAN Inc., Communication and Information Technologies Division, Ankara, Turkey
  • Nursel Akcam Department of Electrical and Electronics Engineering, Gazi University, Ankara, Turkey
  • Erdem Yazgan Department of Electrical and Electronics Engineering, TED University, Ankara, Turkey

DOI:

https://doi.org/10.13052/2021.ACES.J.361110

Keywords:

Band-stop filter, defected ground structure, X-band application

Abstract

In this study, a novel compact bandstop filter (BSF) by utilizing the defected ground structure (DGS) and defected microstrip structure (DMS) techniques are presented. DGS, DMS, and compensated capacitors are used on both bottom and top layers to obtain sharp transition and wider stopband. The operating frequency bandwidth of the filter can be comfortably regulated by tuning the dimensions of the etched structures. In addition to parametric studies, an equivalent circuit model of the proposed filter is extracted. The BSF has an insertion and return losses better than –1.6 and –17 dB in the passband, respectively. Moreover, the developed filter covers X-band frequency range and has stop bandwidth of 10.8–11.8 GHz with the rejection of better than 20 dB. Furthermore, the measurement and simulation results are in compliance with the suggested method. The proposed BSF has a very small size of 14.28 mm ×× 4 mm ×× 0.508 mm and has the potential to be used for radar applications with its high compactness, low cost, and high harmonic rejection performance.

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Author Biographies

Burak Dokmetas, Department of Electrical and Electronics Engineering, Gazi University, Ankara, Turkey

Burak Dokmetas received the B.S. degree in electrical and electronic engineering from Inonu University, Malatya, Turkey, in 2010, and the M.S. degree in electrical and electronic engineering from Gazi University, Ankara, Turkey, in 2016. He is currently working toward the Ph.D. degree in electrical and electronic engineering with the Gazi University.

His main interests are microwave antennas, microwave filters, electromagnetic theory, and radar systems.

Galip Orkun Arican, ASELSAN Inc., Communication and Information Technologies Division, Ankara, Turkey

Galip Orkun Arican received the B.S. degree from Bilkent University, Ankara, Turkey, in 2010, the M.S. degree from Middle East Technical University, Ankara, Turkey, in 2014, and the Ph.D. degree from Gazi University, Ankara, Turkey, in 2021.

From 2010 to 2015, he worked as a MMIC Design Engineer with Nanotechnology Research Center, Bilkent University. Since 2015, he has been working as a RF/Microwave Design Engineer with ASELSAN Inc. His research interests include high frequency applications, GaN/GaAs MMICs, satellite communication, microwave antennas, filters, and electromagnetic theory.

Nursel Akcam, Department of Electrical and Electronics Engineering, Gazi University, Ankara, Turkey

Nursel Akcam received the M.S. and Ph.D. degrees in electrical and electronics engineering from the University of Gazi, Ankara, Turkey, in 1993 and 2001, respectively.

She has been a Professor of Electrical and Electronics Engineering with University of Gazi. Her research interests include asymptotic high-frequency methods, numerical methods in electromagnetic theory, blocking aperture in reflector antennas, communication theory, radar systems, microwave antennas, and microwave filters.

Erdem Yazgan, Department of Electrical and Electronics Engineering, TED University, Ankara, Turkey

Erdem Yazgan received the B.S. and M.S. degrees from the Middle East Technical University, Ankara, Turkey, and the Ph.D. degree from Hacettepe University, Ankara, Turkey, in 1980, all in electrical and electronics engineering.

In 1989, she was a Visiting Professor with Essex University, Essex, U.K. From 1994 to 1995, she was with the Electroscience Laboratory, The Ohio State University, Columbus, OH, USA. Between 1990 and 2015, she was a Professor with the Department of Electrical and Electronics Engineering, Hacettepe University. She joined the Engineering faculty of TED University as Chair for Electrical-Electronics Engineering in 2015. She was a Fulbright Researcher. Her research interests include HF propagation, low altitude radar systems, mobile communications, antennas, MICs, reflector and microstrip antennas, Gaussian beam solutions, conformal mapping, satellite communication, and medical electronics.

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Published

2021-12-30

How to Cite

[1]
B. . Dokmetas, G. O. . Arican, N. . Akcam, and E. . Yazgan, “A Compact Bandstop Filter Design Using DMS-DGS Technique for Radar Applications”, ACES Journal, vol. 36, no. 11, pp. 1460–1467, Dec. 2021.

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