Lale Alatan

E-mail
lalatan@metu.edu.tr
Department
Department of Electrical and Electronics Engineering
Scopus Author ID
Web of Science Researcher ID
A Pattern Reconfigurable Compact Antenna Structure Based on Shorted Microstrip Patches
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2022-01-01)
A compact pattern reconfigurable antenna structure is proposed. The proposed antenna structure is composed of two shorted quarter-wave microstrip patch antennas placed side by side to share a common shorting plane. Therefo...
Işıma Örüntüsü Şekillendirilebilen Kompakt Mikroşerit Yama Anten Çalışması
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2021-09-07)
Bu çalışmada ışıma örüntüsü şekillendirilebilir mikroşerit anten tasarımı incelenecektir. Tasarımın amacı ışıma örüntüsünü yükseliş düzleminde +400 ile -400 arasında tarayabilmektir. Anten kare mikroşerit yama antenin iki ...
Singularity Cancellation for Accurate MoM Analysis of Periodic Planar Structures in Layered Media
Adanir, Suleyman; Alatan, Lale (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-01)
One of the singularity cancellation schemes proposed in the literature is applied to calculate singular integrals arising in the method of moments (MoM) analysis of 2-D periodic planar structures in multilayered media. Dis...
The effect of antenna in the forward model of near field microwave imaging systems
Dalkilic, Akin; Alatan, Lale (2019-07-01)
A fast and accurate forward problem solver for near-field microwave imaging systems is developed by considering the electric field intensity as the measured quantity. Since the antenna port voltage values will be the real ...
UWB 3D Near-Field Imaging with a Sparse MIMO Antenna Array for Concealed Weapon Detection
Anadol, Erman; Seker, Ilgin; Camlica, Sedat; Topbas, Tankut Oguz; Koç, Seyit Sencer; Alatan, Lale; Öktem, Sevinç Figen; Aydın Çivi, Hatice Özlem (2018-04-18)
An ultra-wide-band (UWB) multiple-input multiple-output (MIMO) radar with a sparse array is designed and manufactured for three-dimensional near-field imaging applications such as concealed weapon detection. Contrary to ex...
An application of singularity cancellation for periodic structures in free space
Adanir, Süleyman; Alatan, Lale (IET; 2018-01-01)
A singularity problem arises in the computation of MoM matrix entries. Several singularity cancellation schemes are proposed in literature. One of these singularity cancellation methods is applied to handle the singularity...
Wideband omnidirectional and sector coverage antenna arrays for base stations
Alatan, Lale (2018-01-01)
By using parallel strip line fed printed dipole antennas as array elements, an omnidirectional antenna array and a wide angle sector coverage array operating in octave band are designed. A maximum deviation of ±1.25 dB fro...
A Novel Input Impedance Computation Method for Coaxial Probe Fed Microstrip Antennas by Utilizing Characteristic Modes
Cetin, Metehan; Alatan, Lale (2017-07-14)
A method to efficiently compute the input impedance of the coaxial probe fed microstrip antennas by using characteristic modes is proposed in this paper. The efficiency is achieved by defining a discontinuous source curren...
Performance Comparison of Different Sparse Array Configurations for Ultra-Wideband, Near-field Imaging Applications
Cetin, Beyzat Talat; Alatan, Lale (2017-03-24)
The aim of this study is to compare the performance of different multiple-input multiple-output (MIMO) array topologies, intended to be used in ultra-wideband (UWB) near-field imaging applications, by using an analysis met...
K Band Mikroşerit Yama Anten Dizisi Tasarımı
Aydemir, Aslı Eda; Alatan, Lale; Koç, Seyit Sencer; Aydın Çivi, Hatice Özlem (2016-09-03)
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