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

Full item page

Scholarly Output

76

Articles

49

Citation Count

0

Supervised Theses

5 Scholarly Output Search Results

Now showing 1 - 10 of 76

Citation Count: 3
Explicit synthesis formulae for cascaded lossless commensurate lines
(Fachverlag Schiele Schon, 2008) Şengül, Metin
In literature synthesis of cascaded lossless commensurate lines have been realized via some iterative methods. So to be able to obtain the value of an element which is not the first one the designer has to obtain all the values of the elements connected before the desired one. But in this paper explicit synthesis formulae of the networks containing cascaded lossless commensurate lines up to three have been derived analytically and all the element values can be calculated independently.
Citation Count: 0
SYNTHESIS OF LOSSLESS LADDER NETWORKSWITH SIMPLE LUMPED ELEMENTS CONNECTED VIACOMMENSURATE TRANSMISSION LINES
(Istanbul Univ, Fac Engineering, 2010) Şengül, Metin
An algorithm has been proposed, to synthesize low-pass, high-pass, band-pass and band-stop lossless ladder networks with simple lumped elements connected via commensurate transmission lines (Unit elements, UEs). First, the type of the element that will be extracted is determined from the given mixed-element network function. After obtaining element value, it is extracted, and the two-variable reflection function of the remaining mixed-element network is obtained. This process is repeated until extracting all the elements. For each network type, an example is included, to illustrate the implementation of the related algorithm.
Citation Count: 0
Broadband Matching via Reflection Coefficient Modeling
(AVES YAYINCILIK, 2016) Şengül, Metin
[Abstract Not Available]
Citation Count: 22
Broadband Decoupling and Matching of a Superdirective Two-Port Antenna Array
(IEEE-INST Electrical Electronics Engineers Inc, 2008) Şengül, Metin; Şengül, Metin Y.; Weber, Joern; Stephan, Ralf; Hein, Matthias A.
Decoupling and matching networks may be used to improve the performance of compact antenna arrays where mutual radiator coupling has caused a degradation of the diversity capabilities. A popular network consists of a 180 degrees rat-race directional coupler which decouples the antenna ports followed by impedance matching networks at each port. Researchers however usually neglect the presence of losses both within the antenna array and the decoupling and matching network. For this reason we have built various narrowband and broadband matching networks and compare their performances with the help of calibrated far-field measurement data.
Citation Count: 4
Reflectance-based Foster impedance data modeling
(Fachverlag Schiele Schon, 2007) Şengül, Metin
A reflectance-based method is presented to model a set of given Foster impedance data as a lossless singly terminated two-port consisting of lumped-elements in short or open termination. The basis of the new method rests on the interpolation of the given data as a realizable bounded-real (BR) reflection function. The desired circuit model is obtained by synthesizing this function. An algorithm to generate the circuit model is presented and an example is included which illustrates the utilization of the proposed modeling method.
Citation Count: 5
A broadband microwave amplifier design by means of immittance based data modelling tool
(IEEE, 2002) 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 Count: 0
Design of mixed-element networks via modeling
(IEEE, 2008) Şengül, Metin; Yarman, Sıddık Binboğa
A new method is introduced to design mixed lumped and distributed element network
Citation Count: 2
Synthesis of resistively terminated high-pass LC ladder networks;
(2010) Şengül, Metin; Aydoǧar,Z.
In this paper, a transfer matrix factorization based synthesis algorithm for resistively terminated high-pass LC ladder networks is presented. In the algorithm, component value of the extracted element and the scattering transfer matrix of the remaining network are formulated in terms of scattering transfer matrix coefficients of the whole network. An example is presented to exhibit the application of the proposed synthesis algorithm.
Citation Count: 2
Design of impedance matching network for B&K 8104 hydrophone via Direct Computational Technique for underwater communication
(2010) 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 Count: 0
Broadband Microwave Amplifier Design with Lumped Elements
(Walter De Gruyter Gmbh, 2016) Şengül, Metin
This study introduces a broadband microwave amplifier design that utilizes the measured scattering parameters of active devices without assuming an initial topology for the matching networks or an analytic form of the system transfer function. The algorithm can be extended to design multistage broadband microwave amplifiers. An example is given to illustrate the application of the proposed method. It was found that the proposed method provides very good initials for CAD tools to further improve amplifier performance by working on the element values.