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Dive into the research topics where Serkan Şimşek is active.

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Featured researches published by Serkan Şimşek.


International Journal of Microwave and Wireless Technologies | 2016

An improved stopband and sharp roll off microstrip low pass filter with defected ground structures

Agâh Oktay Ertay; Mehmet Abbak; Serkan Şimşek

In this paper a novel low pass filter (LPF) design procedure is proposed for electromagnetic bandgap based microstrip filters without using classical filter design approach. LPF is designed for ultra-wide stopband and sharp roll-off rate via proposed design procedure. It has been shown that finite periodic fan-shaped defected ground structures (FSDGSs) and double radial stubs (DRSs) yield broad stopband and very sharp transition band. The proposed LPF has −3 dB passband from dc to 1.49 GHz, and −20 dB broad stopband from 1.65 GHz up to 7.41 GHz. Full wave electromagnetic (EM) simulation of the proposed filter is achieved with ANSYSs High Frequency Structure Simulator (HFSS) and equivalent circuit (EC) model of the filter is proposed and verified via Applied Wave Research (AWR) software. To verify the simulations, filter is realized on ARLON AD1000 substrate, and measured with Agilent 5245A PNA-X Vector Network Analyzer. Measurement results of fabricated filter are in good agreement with EM and EC simulations.


Aeu-international Journal of Electronics and Communications | 2013

A novel method for designing one dimensional photonic crystals with given bandgap characteristics

Serkan Şimşek


Aeu-international Journal of Electronics and Communications | 2006

Determination of the complex permittivity of materials with transmission/reflection measurements in rectangular waveguides

Serkan Şimşek; Cevdet Işik; Ercan Topuz; Bayram Esen


Aeu-international Journal of Electronics and Communications | 2012

A novel design method for electromagnetic bandgap based waveguide filters with periodic dielectric loading

Serkan Şimşek; Ercan Topuz; Edip Niver


Aeu-international Journal of Electronics and Communications | 2013

A design method for substrate integrated waveguide electromagnetic bandgap (SIW-EBG) filters

Serkan Şimşek; Sasan Ahdi Rezaeieh


Aeu-international Journal of Electronics and Communications | 2014

A fast and accurate design method for broad omnidirectional bandgaps of one dimensional photonic crystals

Serkan Şimşek


Microwave and Optical Technology Letters | 2009

Shape reconstruction of an inhomogeneous impedance cylinder via potential and neural network approach

Fatih Yaman; Serkan Şimşek


Aeu-international Journal of Electronics and Communications | 2018

A fast hybrid method for the bandgap analysis of 2D photonic crystals based on EMT and AFGSM methods

Onur Erkan; Mehmet Nuri Akıncı; Serkan Şimşek


Microwave and Optical Technology Letters | 2013

Design of a compact broadband circularly‐polarized slot antenna for wireless applications

Sasan Ahdi Rezaeieh; Serkan Şimşek; Javad Pourahmadazar


Aeu-international Journal of Electronics and Communications | 2018

A comprehensive Auxiliary Functions of Generalized Scattering Matrix (AFGSM) method to determine bandgap characteristics of periodic structures

Agah Oktay Ertay; Serkan Şimşek

Collaboration


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Agah Oktay Ertay

Istanbul Technical University

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Cevdet Işik

Istanbul Technical University

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Ercan Topuz

Istanbul Technical University

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Mehmet Nuri Akıncı

Istanbul Technical University

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Onur Erkan

Istanbul Technical University

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Agâh Oktay Ertay

Istanbul Technical University

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Bayram Esen

Celal Bayar University

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Fatih Yaman

Istanbul Technical University

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Mehmet Abbak

Istanbul Technical University

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Necmi Serkan Tezel

Istanbul Technical University

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