Şengül, Metin

Şengül, Metin

Name Variants

Şengül, Metin
M.,Şengül
M. Şengül
Metin, Şengül
Sengul, Metin
M.,Sengul
M. Sengul
Metin, Sengul
Şengül, Metin Y.
Şengül,M.

Job Title

Prof. Dr.

Email Address

Msengul@khas.edu.tr

Main Affiliation

Electrical-Electronics Engineering

Status

Former Staff

Full item page

Scholarly Output

76

Articles

49

Citation Count

0

Supervised Theses

5 Scholarly Output Search Results

Now showing 1 - 7 of 7

Citation - Scopus: 5
A Broadband Microwave Amplifier Design by Means of Immittance Based Data Modelling Tool
(IEEE, 2002) Kilinç, Ali; Şengül, Metin; Pinarbaşi, Haci; Şengül, Metin Y.; Yarman, Sıddık Binboğa
In this paper a practical broadband microwave amplifier design algorithm is introduced utilizing the immittance data-modelling tool. In the course of design first the optimum input and output terminations for the active device are produced employing the real frequency technique. Then these terminations are modelled utilizing the new immittance-modelling tool to synthesize the front-end and back-end matching networks. An example is included to exhibit the implementation of the proposed design algorithm to construct a single stage BJT amplifier over a wide frequency band. It is expected that the proposed design algorithm will find applications to realize wideband microwave amplifiers put on MMIC for mobile communication.
Citation - WoS: 0
Citation - Scopus: 0
Design of Mixed-Element Networks Via Modeling
(IEEE, 2008) Şengül, Metin Y.; Şengül, Metin; Yarman, Sıddık Binboğa
A new method is introduced to design mixed lumped and distributed element network
Citation - WoS: 26
Citation - Scopus: 33
Design of Practical Matching Networks With Lumped Elements Via Modeling
(IEEE, 2007) Yarman, Sıddık Binboğa; Şengül, Metin; Şengül, Metin Y.; Kılınç, Ali
It is a common practice to utilize commercially available software tools to design matching networks for wireless communication systems. Most of these tools require a properly selected matching network topology with good initial element values. Therefore in this paper a practical method is presented to generate matching networks with initial element values. In the implementation process of the proposed method first the driving point immitance data for the matching network is obtained in a straight forward manner without optimization. Then it is modeled as a realizable bounded-real input reflection coefficient which in turn yields the desired matching network with reasonable element values. Eventually the initial design is improved by optimizing the performance of the matched system employing the commercially available computer-aided design (CAD) packages. An example is given to illustrate the utilization of the proposed method. It is shown that new method provides excellent results as a front-end when utilized together with CAD tools.
Citation - Scopus: 2
Design of Impedance Matching Network for B&k 8104 Hydrophone Via Direct Computational Technique for Underwater Communication
(2010) Kuzlu, Murat; Şengül, Metin; Şengül, Metin Y.; Kilinç, Ali; Dinçer, Hasan; Yağlidere, Ilker; Yarman, Sıddık Binboğa
Underwater acoustic communication is a rapidly growing field of applied research and is a technique of sending and receiving message below water. There are several ways of doing such communication but the most common one is realized by using transducers. In underwater acoustic communication one of the most important problems is driving the transducers with matched network. In this study design of impedance matching network for B&K 8104 hydrophone that can be used for underwater communication was performed via Direct Computational Technique (DCT). © 2010 IEEE.
Citation - WoS: 11
Design of Distributed-Element Rf Filters Via Reflectance Data Modeling
(Elsevier GMBH Urban & Fischer Verlag, 2008) Şengül, Metin Y.; Şengül, Metin; Yarman, Sıddık Binboğa; Volmer, Christian; Hein, Matthias A.
A reflectance-based modeling method is presented to obtain the distributed-element counterpart of a lumped-element network which is described by measured or computed reflectance data at a set of frequencies. Numerical generation of the scattering parameters forms the basis of this modeling tool. It is not necessary to select a circuit topology for the distributed-element model which is the natural consequence of the modeling process. Our approach supplements the known interpolation methods by a simple technique that does not involve complicated cascaded circuit topologies and whose numerical convergence is proven. To illustrate the utilization of the proposed method a lumped-element low-pass Chebyshev filter is transformed to its distributed-element counterpart. The filter designed for a frequency band around 1 GHz was fabricated and experimentally characterized. We find excellent agreement between measured and simulated transducer power gain over the entire frequency band. (c) 2007 Elsevier GmbH. All rights reserved.
Citation - WoS: 4
Citation - Scopus: 5
Broadband Equalizer Design With Commensurate Transmission Lines Via Reflectance Modeling
(IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 2008) Şengül, Metin Y.; Şengül, Metin; Yarman, Sıddık Binboğa
In this paper an alternative approach is presented to design equalizers (or matching networks) with commensurate (or equal length) transmission lines. The new method automatically yields the matching network topology with characteristic impedances of the commensurate lines. In the implementation process of the new technique first the driving point impedance data of the matching network is generated by tracing a pre-selected transducer power gain shape without optimization. Then it is modelled its it realizable bounded-real input reflection coefficient in Richard domain which ill turn yields the desired equalizer topology with line characteristic impedances. This process results in an excellent initial design for the commercially available computer aided design (CAD) packages to generate final circuit layout for fabrication. An example is given to illustrate the utilization of the new method. It is expected that the proposed design technique is employed as it front-end to commercially available computer aided design (CAD) packages which generate the actual equalizer circuit layout with physical dimensions for mass production.
Citation - WoS: 3
Citation - Scopus: 4
Design of Broadband Microwave Amplifiers With Mixed-Elements Via Reflectance Data Modeling
(Elsevier GMBH Urban & Fischer Verlag, 2008) Şengül, Metin Y.; Şengül, Metin; Yarman, Sıddık Binboğa
A practical method is introduced to design single-stage broadband microwave amplifiers with mixed lumped and distributed elements via modeling the reflectance data obtained from lumped-element input and output matching network prototypes. The same transducer power gain level is obtained by using less number of lumped-elements in the mixed-element amplifier than that of the lumped-element amplifier prototype. A mixed-element amplifier design is presented to exhibit the utilization of the method. It is expected that the method will be employed to design microwave amplifiers for broadband communication systems. (C) 2007 Elsevier GmbH. All rights reserved.