Şimşek Demir

E-mail

simsek@metu.edu.tr

Department

Department of Electrical and Electronics Engineering

ORCID

0000-0001-7051-4945

Scopus Author ID

7006702503

Web of Science Researcher ID

B-8577-2012

A Compound ECCM Technique for FMCW Radars Eser, Dogancan; Demir, Şimşek; Koç, Seyit Sencer (2023-01-01) This paper presents a compound electronic counter-countermeasure (ECCM) technique for frequency-modulated continuous-wave (FMCW) radars to counter electronic countermeasure (ECM) techniques such as coherent spoofing, non-c...
A Multi-Box Behavioural Nonlinear Mixer Model Ozgun, Ali; NESİMOĞLU, TAYFUN; Demir, Şimşek (2023-01-01) This paper presents a new behavioural mixer model in a multi-box structure. In the proposed model, as well as amplitude and phase nonlinearity, the memory effect is also modelled. The multi-box structure is constructed in ...
Real-time monitoring of temperature stratification to respond to eutrophication Yücel-Bilen, Özge; Çelebi, Emrehan Berkay; Ünalan, Utku Berkalp; Şanlı, Emine Betül; Şimşir, Serbay; Sömek, Süleyman Kazım; Kallem, Aydoğa; Ahmadian, Reza; Demir, Şimşek; Aksoy, Ayşegül (2022-10-24)
Otonom su devrilmesi izleme-uyarı-müdahale sistemi Şanlı, Emine Betül; Şimşir, Serbay; Sömek, Süleyman Kazım; Kallem, Aydoğa; Yücel Bilen, Özge; Çelebi, Emrehan Berkay; Ünalan, Utku Berkalp; Ahmadian, Reza; Demir, Şimşek; Aksoy, Ayşegül (2021-12-09)
Dual Band, Miniaturized Permittivity Measurement Sensor With Negative-Order SIW Resonator Mohammadi, Pejman; Teimouri, Hadi; Mohammadi, Ali; Demir, Şimşek; KARA, ALİ (2021-10-01) A novel dual band, highly sensitive Substrate Integrated Waveguide (SIW) sensor for permittivity measurements is presented. A pair of modified Complementary Split Ring Resonators (CSRRs) is etched on SIW surface. CSRRs are...
An autonomous system for minimization of turnover effects in eutrophic lakes Şimşir, Serbay; Sömek, Süleyman Kazım; Şanlı, Emine Betül; Aydoğa, Kallem; Yücel, Özge; Çelebi, Emrehan Berkay; Ünalan, Utku Berkalp; Reza, Ahmadian; Demir, Şimşek; Aksoy, Ayşegül (2021-08-31)
Compact and Directional Printed Dipole Antenna Pair Conformed on a Conical Surface Haykir, Yigit; Kallem, Aydoga; Demir, Şimşek (2021-08-28) In this paper, a small sized transmitting and receiving conformal antenna pair is proposed on a conical surface for C-band radar applications. The antenna pair consists of printed dipole elements and a truncated reflector ...
Compact Size, and Highly Sensitive, Microwave Sensor for Non-Invasive Measurement of Blood Glucose Level Mohammadi, P.; Mohammadia, A.; Demir, Şimşek; KARA, AYŞEN GÜLÇİN (2021-01-01) None-invasive blood glucose measurement enables effective diagnosis and treatment of diabetic patients. The existing microwave sensors suffer from low sensitivity and large size. This article presents a highly sensitive an...
A Low-Profile DielectricWaveguide Altimeter Antenna Haykir, Yigit; Dagdeviren, Birkan; Korkmaz, Anil Direnc; Demir, Şimşek (2020-08-01) In this paper, design and implementation of a compact, low-profile and low-cost altimeter antenna is presented. A top-open dielectric waveguide is utilized to obtain a radiation pattern that illuminates from 20 to 70 degre...
Prospects of FMCW-based frequency diverse array radar Cetiner, Ramazan; Cetintepe, Cagri; Demir, Şimşek; Hizal, Altunkan (2019-11-01) The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmissio...

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