Lale Alatan

Department of Electrical and Electronics Engineering
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Improved Isolation Between Ports of MultiMode Antenna with a Reconfigurable Pattern by Decoupling Network
Tonga, Muhammed; Alatan, Lale; Aydın Çivi, Hatice Özlem (2023-01-01)
In this study, a decoupling network is designed and implemented to a concentric circular patch with a ring antenna whose two ports are strongly coupled. The ports of the antenna are excited with phase differences to have d...
A Compact Pattern Reconfigurable Antenna with 4 Different Radiation Modes
Gök, Čaǧlar; Alatan, Lale (2023-01-01)
This letter presents the design, fabrication, and measurements of a pattern reconfigurable antenna operating at 3.3 GHz. A circular patch in the center and a ring around it are excited by two feeds to obtain broadside and ...
A compact pattern reconfigurable antenna employing shorted quarterwave patch antennas
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2022-10-01)
A Pattern Reconfigurable Multi-Mode Antenna Based on Circular Disk and Ring-Shaped Resonators
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2022-07-15)
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...
Pattern Reconfiguration of Microstrip Antennas by Controlling Slots in Its Ground Plane
Gök, Çaǧlar; Alatan, Lale (2022-01-01)
In this work, a pattern reconfigurable antenna with improved pattern diversity is proposed. The antenna is formed by placing a circular ring around a circular microstrip patch antenna and excited by using two feeds. The in...
Conical and Broadside Beam Switching Micromachined Antenna at 26GHz
Berberoǧlu, Ali; Çelik, Feza Turgay; Görgülü, Feza; Aydın Çivi, Hatice Özlem; Alatan, Lale (2022-01-01)
A pattern switchable micromachined antenna operating at 26 GHz is proposed. The antenna consists of a microstrip circular patch and a ring antenna placed concentrically. The antenna can switch between conical and broadside...
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 ...
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