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Seçmen, Mustafa

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https://gcris.yasar.edu.tr/handle/123456789/12616
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Job Title
Prof.Dr.
Email Address
Main Affiliation
01.01.09.02. Elektrik- Elektronik Mühendisliği
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Current Staff
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ORCID ID
0000-0002-7656-4051
Scopus Author ID
16025424000
Turkish CoHE Profile ID
Google Scholar ID
Cx6NzgAAAAJ
WoS Researcher ID
I-9720-2019
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mustafa.secmen.jpg (8.57 KB)

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NO POVERTY1
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ZERO HUNGER2
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GOOD HEALTH AND WELL-BEING3
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QUALITY EDUCATION4
QUALITY EDUCATION
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GENDER EQUALITY5
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CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
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AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
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DECENT WORK AND ECONOMIC GROWTH8
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INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
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SUSTAINABLE CITIES AND COMMUNITIES11
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RESPONSIBLE CONSUMPTION AND PRODUCTION12
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Documents

113

Citations

783

h-index

11

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Documents

91

Citations

299

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Scholarly Output

82

Articles

25

Views / Downloads

3/0

Supervised MSc Theses

9

Supervised PhD Theses

2

WoS Citation Count

132

Scopus Citation Count

193

Patents

0

Projects

3

WoS Citations per Publication

1.61

Scopus Citations per Publication

2.35

Open Access Source

15

Supervised Theses

11

JournalCount
Journal of Materials Science: Materials in Electronics3
Electrical-Electronics and Biomedical Engineering Conference, ELECO 2024 - Proceedings -- 2024 Electrical, Electronics and Biomedical Engineering Conference at 15th National Conference on Electrical and Electronics Engineering, ELECO 2024 -- 28 November 2024 through 30 November 2024 -- Bursa -- 2063152
Elektronika ir Elektrotechnika2
23nd Signal Processing and Communications Applications Conference (SIU)2
Physica Scripta2
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Now showing 1 - 10 of 82
  • Thumbnail Image
    Conference Object
    The Effectiveness of JADE Based Minimum Variance Distortionless Response Algorithm For DOA Estimation and Adaptive Beamforming in Multipath Smart Antenna Application
    (IEEE, 2014-10) Ahmad Aminu; Mustafa Secmen; Munir Aminu Husein; Aminu, Ahmad; Secmen, Mustafa; Husein, Munir Aminu; S Misra; C Ayo; N Omoregbe; B Odusote; A Adewumi
    In this paper the direction of arrival (DOA) and adaptive antenna array beamforming for the smart antenna applications are realized by using Minimum Variance Distortionless Response (MVDR) algorithm of DOA estimation. The MVDR supported by joint approximate diagonalization of eigenmatrices (JADE) algorithm is used to estimate the direction of arrivals of coherent signals in non-coherent groups. The generalized steering vectors using JADE algorithm are first estimated and then the spectrum methods are realized to estimate the DOA of each signal. Root mean square error (RMSE) values are computed in different scenarios for the proposed method as well as JADE-MUSIC and the corresponding results are compared. Although both methods resolved the signals correctly simulation results show that JADE based MVDR has better performances in the cases of low number of antenna elements and snapshots. The DOAs obtained are then processed using LMS adaptive beamforming algorithm to steer the main lobe of the radiation pattern to desired angles (signals) and the nulls to undesired angles (signals). The simulation results also reveal that adaptive beamforming is successfully done by annihilating the effects of undesired signals significantly.
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    Master Thesis
    Ku bant uydu haberleşme için bir besleme sistemi tasarımı ve üretimi
    (2018) Çarkacı, Mustafa Emre; Seçmen, Mustafa
    In this thesis, the design and realization of two critical components for the reflector antenna feeding system used for satellite communication or broadcasting applications are explained. One of these components is wide-band corrugated conical horn antenna that is commonly used in telemetry, satellite tracking, radar and remote sensing systems, and it is used as a direct radiator antenna in broadband measurements. The second one is a 3-port waveguide diplexer design which allows working of an antenna as receiver and transmitter simultaneously in different frequencies. The system works in Ku frequency band which is commonly preferred for satellite communication. The antenna is designed with the circular to rectangular WR-62 waveguide transition structure to provide matching to diplexer and also it operates in 10-19 GHz frequency band and has a high return loss value of better than 20 dB and an antenna gain of 14.5-20 dBi within the given band. The diplexer is designed to operate for the frequency band of 10.5-12.75 GHz at RX (receiving) band and 17.3-18.4 GHz at TX (transmit) band. The common port (feeding to antenna) and TX port of the structure have WR-62 rectangular waveguide and RX port has WR-75 rectangular waveguide cross sections. These ports are combined at T-junction by passing from transition sections. Possible to use in case of need, three different versions of the proposed diplexer are designed, simulated and implemented. The first one is the H-plane diplexer with vertical polarization and the second is the horizontal polarized E-plane diplexer. Finally, a dual-polarized diplexer that works both vertically and horizontally polarized is designed. The designed diplexers have better reflection loss than 15 dB in the RX and TX arms and isolation values around 60-75 dB. At the same time, the designs have a good insertion loss value. Regarding to manufacturing, one of the most important objectives of the thesis is to use three dimensional (3-D) printing technology and conductive spray coating method, which makes the prototypes of the designed structures much cheaper and produces in a shorter time than CNC manufacturing. Along with the results, it has been proven that the verification of the designs is also possible with this method.
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    Conference Object
    Citation - WoS: 3
    Citation - Scopus: 4
    Omnidirectional and Circularly Polarized Waveguide Circular Slot Antenna Array for Satellite Communication
    (IEEE, 2016) Ceyhan Turkmen; Mustafa Secmen; Secmen, Mustafa; Turkmen, Ceyhan
    In this paper the design of omnidirectional and circularly polarized antennas which can be used in satellite communication is explained. These antennas consist of circular slotted array placed symmetrically on a cylindrical waveguide. The feeding of this cylindrical waveguide is provided with a special transition from rectangular waveguide to cylindrical waveguide. In order to provide circular polarization parallel metallic plates are attached to the aperture of circular slotted array. As the result of the designs better than 10 dB return loss is found in the frequency region of both transmitter (around 11.75 GHz) and receiver (around 14 GHz) within approximately 3 percent frequency bandwidth. Besides there is lower than 1 dB axial ratio in the azimuth plane and lower than 4 dB axial ration in a wide beamwidth of elevation plane. The variation of about 0.7 dBi is observed in the gain at the azimuth plane which provides omnidirectionality at this plane.
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    Article
    Dual-band full metal 2 × 2 cavity-backed filtering antenna with waveguide stubs on coupling slot
    (Institute of Physics, 2025-09-01) Yavuz Asci; Mustafa Seçmen; Asci, Yavuz; Secmen, Mustafa
    In this study a dual-band full metal cavity-backed antenna which has been modified from a wideband antenna is presented for a Ku-band satellite communication systems (SatCom). The antenna consists of a feed waveguide coupling slot cavity-backed power division layer and radiating layer with slots and baffles. For filtering purposes the stubs are inserted into the coupling slot which provides notches. They are intended to separate the Rx and Tx bands. This converts a wideband antenna into a dual-band antenna without changing the overall dimensions of the antenna. Moreover gain/radiation patterns in the Tx and Rx bands are not affected. The addition of stubs effectively rejects the out-of-band frequency region of 12.5-13.75 GHz between receive (Rx, 10.5-12.5 GHz) and transmit (Tx, 13.75-14.5 GHz) bands. Consequently isolation and interference between the Rx and Tx bands is improved. The measured S-parameters for |S11| < −10 dB present the bandwidths of 2.18 GHz (10.42-12.6 GHz FBW = 18.9%) and 0.87 GHz (13.83-14.7 GHz GHz FBW = 6.1%) for Rx and Tx bands respectively. Besides the bandwidth of |S11| > −2 dB for the out-of-band region is 0.57 GHz (12.95-13.52 GHz) which gives dual-band characteristics. The measured peak gain of the antenna is about 14.9 dBi. The maximum out-of-band rejection between the Rx and Tx bands is about 19.2 dB at 13 GHz. The proposed antenna has compact dimensions of 1.7λ0 × 1.5λ0 × 1λ0 at the lowest frequency of 10.4 GHz. © 2025 Elsevier B.V. All rights reserved.
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    Conference Object
    Citation - Scopus: 4
    Ultrawideband inverse scattering method for resonance region target recognition: Application to small-scale airplane targets with measured data
    (Institute of Electrical and Electronics Engineers Inc., 2015) Mustafa Seçmen; Secmen, Mustafa
    This paper develops an inverse scattering method to determine the characteristics of resonance region targets by using ultrawideband scattering signals. The method mainly uses multiple time-domain signals for each target and they are processed to give feature vectors in frequency domain. These vectors contain target-specific information related with characteristics (dimensions of substructures material properties etc.) of the known targets. The target recognition is employed by using test (unknown) target's scattering signal. This time-domain signal is processed in an inverse way to get a frequency-domain test vector. Then the characteristics of test target are assigned as these of one of the known targets with a basic template-matching approach between test vector and feature vectors of these targets. The method is demonstrated for three realistic small-scale airplane. For an ultrawideband system of 0.7-18 GHz more than 85 percent accuracy has been obtained even under moderate signal-to-noise (SNR) ratio of about 10 dB. © 2015 Elsevier B.V. All rights reserved.
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    Article
    Citation - WoS: 5
    Citation - Scopus: 3
    Analysis- Design- and Actual Fabrication of a Hybrid Microstrip-SIW Bandpass Filter Based on Cascaded Hardware Integration at X-Band
    (KAUNAS UNIV TECHNOLOGY, 2021-02-25) Kemal Guvenli; Sibel Yenikaya; Mustafa Secmen; Guvenli, Kemal; Yenikaya, Sibel; Secmen, Mustafa
    In this paper the Microstrip-Substrate Integrated Waveguide (M-SIW) bandpass filter is designed simulated and fabricated based on the theoretical analysis. The Substrate Integrated Waveguide (SIW) highpass filter and the microstrip lowpass filter are combined in a hybrid design to achieve the M-SIW bandpass filter in the X-band. This design is more comprehensible and easier to achieve a bandpass filter at a desired frequency. The SIW highpass filter and the microstrip lowpass filter are connected in series to achieve the bandpass filter. To the measured results of the fabricated M-SIW bandpass filter the center frequency is 10.20 GHz and the bandwidth is 2.40 GHz. When the analytical and measurement results are compared the frequency change in the cut-off frequency is 6.02 % and the frequency change in the bandwidth is 8.74 % It is generally seen that analytical simulation and measurement results are compatible with each other. The M-SIW bandpass filter can be broadly used in radar Worldwide Interoperability for Microwave Access (WiMAX) and satellite technologies. The filters are simulated in Computer Simulation Technology (CST) Studio Suite.
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    Conference Object
    Improvement of Over-the-Air Antenna Performance Tests for Electric Vehicle Alternating Current Chargers
    (IEEE Computer Society, 2025-05-14) Rumeysa Tuba Seven Iyison; Gokturk Poyrazoglu; Mustafa Seçmen; Secmen, Mustafa; Poyrazoglu, Gokturk; Iyison, Rumeysa Tuba Seven
    This paper aims to provide robust cellular connectivity for alternating current electric vehicle (AC EV) chargers by implementing reliable cellular communication protocols and optimizing antenna performance. Key performance metrics such as Total Radiated Power (TRP) and Total Isotropic Sensitivity (TIS) were used to scale and assess connectivity between the LTE module antennas and base station. A root-cause analysis identified factors causing poor antenna performance and theoretical data supported solutions to streamline testing processes. The results offer a framework to enhance connectivity ensuring remote control of AC EV chargers as mandated by the Open Charge Point Protocol (OCPP). © 2025 Elsevier B.V. All rights reserved.
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    Conference Object
    Wireless EMG Device for Hand Movement Classification Using RTPNNs
    (Springer Science and Business Media Deutschland GmbH, 2025) Ozalp, Hasan; Bakircioglu, Kaan; Yıldız, Osman; Secmen, Mustafa
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    Conference Object
    Citation - WoS: 1
    Citation - Scopus: 7
    An Identification Method Using ESPRIT and PCA for Radar Targets in Resonance Region
    (IEEE, 2013) Salih Poyraz; Mustafa Secmen; Poyraz, Salih; Secmen, Mustafa
    This paper aims at the development of a fast and sufficiently aspect- independent identification method with the processing of wideband scattered signals from radar targets. In the given method estimation of signal parameters by rotational invariance techniques (ESPRIT) is mainly used for the purpose of classification of targets in resonance region. Multiple reference vectors acquired by using this technique are reduced to one vector for each target with principal component analysis (PCA) and this sole vector is used as feature vector of the given target. The identification phase is employed according to the highest correlation coefficients between ESPRIT vectors of test signals and feature vectors. The proposed method is applied to small-scale airplane targets modeled with wires and about 88 percent identification rate is obtained even for SNR level of -5 dB. The results for other similar dimension reduction techniques are also demonstrated and PCA is found to give better accuracy rates.
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    Article
    Citation - WoS: 15
    Citation - Scopus: 15
    Electromagnetic shielding effectiveness and microwave properties of expanded graphite-ionic liquid co-doped PVDF
    (Springer, 2023-01) Zeynep Ertekin; Mustafa Seçmen; Mustafa Erol; Erol, Mustafa; Ertekin, Zeynep; Secmen, Mustafa
    Polymer-based dielectric materials exhibiting high permittivity and high dielectric loss can be preferred in electromagnetic interference shielding due to providing lightweight and better corrosion characteristics as compared to heavy metals. In this work modified carbon black (CB) graphite (GR) and expanded graphite (e-GR) are incorporated with an ionic liquid, 1-Butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) in a polyvinylidene fluoride (PVDF) matrix in form of their binary alloys. Electromagnetic shielding effectiveness (SE) and complex permittivity/permeability characteristics of synthesized materials are investigated and measured both in X and Ku band waveguides. The addition of the [BMIM]BF4 into material is observed to enhance ionic conductivity as well as polarizability of the designed composites. The ionic liquid (IL) comprising and IL-free e-GR based composites are measured to give minimum 32.7 dB and 28.1 dB shielding effectiveness along X-band and minimum 39.5 dB and 35.5 dB shielding effectiveness along Ku-band frequency ranges for materials having 3.00 mm sample thicknesses respectively. In comparison with the modified CB and GR the e-GR exhibits better dispersion and superior SE values in the PVDF matrix. In addition to homogeneity observations obtained from scanning electron microscope (SEM) an electromagnetic approach to check homogeneity of the synthesized composites is proposed to the literature which compares shielding effectiveness values per unit thickness (dB/mm) calculated from S-parameter measurements with vector network analyzer (VNA) and calculated from permittivity/permeability values being extracted with Nicolson-Ross-Weir (NRW) algorithm. The homogeneity of composites is found sufficient and more than 9.5 dB/mm and 11.5 dB/mm shielding effectiveness for IL e-GR composite are obtained at X and Ku-bands respectively. © 2023 Elsevier B.V. All rights reserved.