Welcome.
Here you will have a glimpse into my research and educational activities.
My team designs and optimizes antenna arrays for next-generation wireless systems!
Our applications are cellular & satellite communications and radars for various use cases.
About Me
I work as an Assistant Professor at the Delft University of Technology (TU Delft), The Netherlands, in the Microwave Sensing, Signals and Systems (MS3) Section. I received my B.Sc. degree with double specialization in Communications and Microwaves/Antennas from the Department of Electrical and Electronic Engineering, Middle East Technical University, Ankara, Turkey, in 2014, and the M.Sc. (Cum Laude, with the Justus & Louise van Effen Scholarship) and Ph.D. degrees (Cum Laude) in Electrical Engineering from Delft University of Technology, Delft, The Netherlands, in 2016 and 2020, respectively. My Ph.D. thesis was titled "Antenna Array Synthesis and Beamforming for 5G Applications: An Interdisciplinary Approach". Following my Postdoctoral Research at TU Delft, I started working in my current role.
My research interests lie in the field of phased arrays for next-generation communication and sensing systems, including array optimization, cooling, multibeam antennas, and beamforming algorithms.
Last Updates
Aug. 2024
We will present 2 papers in the European Microwave Week.
Our papers in IEEE ARRAY and EuRAD are finalists for a prize.
4 new MSc students started working with us as academic interns.
We have a new iPhD student working on polarimetric phased arrays.
We have a PhD vacancy on 6G radio resource management for JCAS!
2 new PhDs will start in October (1 in FNS, 1 in NXP-IPCEI program).
Publications
Journal Papers
W. Chen, Y. Aslan, R. Litjens and A. Yarovoy, “System-level assessment of shaped elevation beam patterns for hybrid beamforming in mm-wave 5G networks with spatially heterogeneous traffic,” IEEE Access, submitted.
N. B. Onat, I. Roldan, F. Fioranelli, A. Yarovoy and Y. Aslan, “Constrained infinitesimal dipole modeling assisted ensemble prediction of embedded element patterns via machine learning,” IEEE Trans. Antennas Propag., vol. 72, no. 9, pp. 7353-7358, Jul. 2024.
Y. Aslan and A. Roederer, “Multiple beam forming schemes for user terminal antennas: now and next,” Reviews of Electromagnetics (RoE), vol. 3, 2024 (invited roadmap).
F. T. Celik, A. Yarovoy and Y. Aslan, “From Cooling to Coupling and Back: A Novel Beam Switching Heatsink Antenna Array With CSRR Embedded Isolation Wall,” IEEE Antennas Wirel. Propag. Lett, vol. 22, no. 11, Nov. 2023 (published in a special cluster).
Y. Aslan, A. Roederer and A. Yarovoy, “System advantages of using large-scale aperiodic array topologies in future mm-wave 5G/6G base stations: an interdisciplinary look,” IEEE Syst. J., vol. 16, no. 1, pp. 1239-1248, Mar. 2022.
Y. Aslan, “Optimization of virtually-aperiodic linear sparse arrays,” Microw. Opt. Technol. Lett., vol. 64, no. 2, pp. 318-324, Feb. 2022.
J. Puskely, T. Mikulasek, Y. Aslan, A. Roederer and A. Yarovoy, “5G SIW based phased antenna array with cosecant squared shape pattern,” IEEE Trans. Antennas Propag., vol. 70, no. 1, pp. 250-259, Jan. 2022. (listed in the top accessed papers in the first month of publication)
Y. Aslan, A. Roederer, N. J. G. Fonseca, P. Angeletti and A. Yarovoy, “Orthogonal vs. zero-forced beamforming in multibeam antenna systems: review and challenges for future wireless networks,” IEEE J. Microwaves, vol. 1, no. 4, Oct. 2021. (invited paper)
Y. Aslan, A. Roederer and A. Yarovoy, “Concentric ring array synthesis for low side lobes: an overview and a tool for optimizing ring radii and angle of rotation,” IEEE Access, Early Access, Aug. 2021.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Synthesis of quasi-modular circularly polarized 5G base station antenna arrays based on irregular clustering and sequential rotation,” Microw. Opt. Technol. Lett., vol. 63, no. 4, pp. 1278–1285, Apr. 2021 (listed among the top 10 most downloaded papers)
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Trade-offs between the quality of service, computational cost and cooling complexity in interference-dominated multi-user SDMA systems,” IET Comm., vol. 14, no. 1, pp. 144–151, Jan. 2020.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Multiple beam synthesis of passively cooled 5G planar arrays using convex optimization,” IEEE Trans. Antennas Propag., vol. 68, no. 5, pp. 3557–3566, May 2020.
Y. Aslan, A. Roederer and A. Yarovoy, “Synthesis of optimal 5G array layouts with wide-angle scanning and zooming ability for efficient link setup and high-QoS communication,” IEEE Antennas Wirel. Propag. Lett, vol. 19, no. 9, pp. 1481–1485, Jun. 2020.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Phase-only control of peak sidelobe level and pattern nulls using iterative phase perturbations,” IEEE Antennas Wirel. Propag. Lett, vol. 18, no. 10, pp. 2081–2085, Oct. 2019.
Y. Aslan, J. Puskely, J. H. J. Janssen, M. Geurts, A. Roederer and A. Yarovoy, “Thermal-aware synthesis of 5G base station antenna arrays: an overview and a sparsity-based approach,” IEEE Access, vol. 6, pp. 58868-58882, Oct. 2018. (Proposed thermal model was added as a feature in CST Studio Suite in the 2020+ versions!)
Y. Aslan, J. Puskely and A. Yarovoy, “Heat source layout optimization fortwo-dimensional heat conduction using iterative reweighted L1-norm convex minimization,” Int. J. Heat Mass Transf., vol. 122, pp. 432-441, Jul. 2018.
Patents
A. Roederer, Y. Aslan, N. J. G. Fonseca, P. Angeletti, and A. Yarovoy, “Multiple beam forming networks for antennas with interference mitigation functionality,” NL patent application nr. 2035700, filed on Aug. 29, 2023.
Invited Talks
Y. Aslan, “Front-end topologies and calibration strategies of active phased arrays,” Workshop on Active Array Antennas: Design concepts, technologies and over-the-air testing, EuCAP, Glasgow, Scotland, Mar. 2024.
Y. Aslan, “Forming beams across disciplines: Multibeam antennas for XG,” IEEE AP/MTT/EMC/ED Turkey Seminars, Apr. 2023.
Y. Aslan, “Thermal-aware multi-beam antenna synthesis in 5G,” Workshop on Integration and Multi-Physics Challenges in 5G mm-Wave System Desing, EuMW, Paris, France, Oct. 2019.
Interviews
Y. Aslan, “Interdisciplinarity in 5G research,” Maxwell, Electrotechnische Vereeniging (ETV), Dec. 2020.
Conference Papers
S. P. Hehenberger, A. P. T. Adithyababu, S. Caizzone, Y. Aslan, and A. Yarovoy, “Hybrid additive manufacturing of a dielectric resonator phased array antenna at K band,” IEEE ARRAY 2024, accepted (finalist for the student paper competition).
C. Zhao, A. Garcia-Tejero, W. Bouwmeester, Y. Aslan, O. Krasnov and A. Yarovoy, “Calibration of polarimetric automotive radar with asymmetric MIMO topology and off-broadside beamforming,” EuMW 2024, accepted (finalist for the young engineer prize).
M. Buenaventura-Camps, Y. Aslan, P. Freidl, P. Aubry, N. B. Onat, J. Janssen, M. Geurts and A. Yarovoy, “An aperiodic mm-wave phased array controlled by multi-channel analog beamforming ICs,” EuMW 2024, accepted.
F. T. Celik, C. Zhao, A. Yarovoy and Y. Aslan, “Electromagnetic-thermal performance trade-offs in phased arrays with shaped elevation patterns,” IEEE AP-S/URSI 2024, accepted.
N. B. Onat, I. Roldan, F. Fioranelli, A. Yarovoy and Y. Aslan, “Dataset Dependency of Data-Driven ML Techniques in Pattern Prediction Under Mutual Coupling,” 4th URSI AT-RASC, accepted.
N. B. Onat, A. Yarovoy and Y. Aslan, “Sunflower array of infinitesimal dipoles for constrained antenna modeling,” Proc. 18th EuCAP, Glasgow, UK, Mar. 2024.
Y. Aslan, A. Roederer, N. J. G. Fonseca, P. Angeletti and A. Yarovoy, “Development of a circuit-type multiple-agile beamforming and interference mitigation network,” in Proc. 18th EuCAP, Glasgow, UK, Mar. 2024 (invited to a convened session).
Y. Aslan, P. Aubry, N. B. Onat, J. Janssen, M. Geurts and A. Yarovoy, “Heuristic over-the-air calibration of beamformer ICs in active mm-wave phased arrays,” in Proc. IEEE CAMA, Genoa, Italy, Nov. 2023. (invited to a special session).
C. Zhao, Y. Aslan, A. Yarovoy and A. Roederer, “Cosecant-squared shaped pattern stability with frequency in series-fed antennas at mm-waves,” in Proc. IEEE CAMA, Genoa, Italy, Nov. 2023.
R. Vergez, Y. Aslan, A. Roederer and A. Yarovoy, “A novel Butler-enhanced 2 beam by 4 element analog beamforming network,” in Proc. IEEE CAMA, Genoa, Italy, Nov. 2023.
N. B. Onat, I. Roldan, F. Fioranelli, A. Yarovoy and Y. Aslan, “Efficient embedded element pattern prediction via machine learning: a case study with planar non-uniform sub-arrays,” in Proc. 17th EuCAP, Florence, Italy, Mar. 2023.
N. Birari, Y. Aslan and A. Yarovoy, “An intriguing relation between the power consumption and number of antenna elements in multi-beam phased arrays,” in Proc. 17th EuCAP, Florence, Italy, Mar. 2023.
F. T. Celik and Y. Aslan, “A novel heatsink attached mm-wave active patch antenna with adjustable frequency and cooling,” in Proc. 17th EuCAP, Florence, Italy, Mar. 2023.
C. Zhao, A. Yarovoy, A. Roederer and Y. Aslan, “Shaped-beam subarrays for equi-power urban area coverage with modularity and low cost,” in Proc. 17th EuCAP, Florence, Italy, Mar. 2023.
N. van de Kreeke, Y. Aslan, N. B. Onat and A. Yarovoy, “Statistical effects of propagation environment and transmit array topology on cell-edge user service quality at mm-waves,” in Proc. 17th EuCAP, Florence, Italy, Mar. 2023.
Y. Aslan, A. Balasubramanian and A. Yarovoy, “Electromagnetic and thermal analysis of finned heatsink active mm-wave linear array antennas,” in Proc. 2nd IEEE UkrMW (Online), Nov. 2022. (invited to the Special Session on MM and sub-MM wave technologies for 5G and beyond applications)
Y. Aslan, “Site-Specific Ultra-Low-Sidelobe Phased Array Topologies for Sparse Areas of Particular Shape,” in Proc. 52nd EuMC, Milan, Italy, Sep. 2022.
Y. Aslan, “Opportunities, Progress and Challenges in Active Heatsink Antenna Arrays for 5G and Beyond,” in Proc. 52nd EuMC, Milan, Italy, Sep. 2022.
N. Myers, Y. Aslan and G. Joseph, “Near-field focusing using phased arrays with dynamic polarization control,” in Proc. 30th EUSIPCO, Belgrade, Serbia, Sep. 2022.
Y. Aslan and N. B. Onat, “Optimization of uniform amplitude periodic linear phased arrays for grating lobe reduction ,” in Proc. 16th EuCAP, Madrid, Spain, Mar. 2022.
A. Roederer, J. Puskely, Y. Aslan and A. Yarovoy, “Shaped elevation patterns for 5G base stations,” in Proc. IEEE AP-S/URSI (Online), Singapore, Dec. 2021.
Y. Aslan, A. Roederer and A. Yarovoy, “Synthesis of low-sidelobe stepped-amplitude aperiodic phased arrays,” in Proc. 15th EuCAP (Online), Düsseldorf, Germany, Mar. 2021.
Y. Aslan, A. Roederer and A. Yarovoy, “System impacts of user scheduling with minimal angular separation constraints in radio resource management for 5G and beyond,” in Proc. APMC 2020 (Online), Hong Kong SAR, China, Dec. 2020.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Effect of element number reduction on inter-user interference and chip temperatures in passively-cooled integrated antenna arrays for 5G,” in Proc. 14th EuCAP (Online), Copenhagen, Denmark, Mar. 2020.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Performance comparison of single- and multi-lobe antenna arrays in 5G urban outdoor environments at mm-waves via intelligent ray tracing,” in Proc. 14th EuCAP (Online), Copenhagen, Denmark, Mar. 2020.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Active multiport subarrays for 5G communications,” in Proc. IEEE APWC, Granada, Spain, Sept. 2019.
Y. Aslan, C. E. Kiper, A. Biggelaar, U. Johannsen and A. Yarovoy, “Passive cooling of mm-wave active integrated 5G base station antennas using CPU heatsinks,” in Proc. 16th EuRAD, Paris, France, Oct. 2019.
S. Salman, Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “System modeling and simulation in 5G: A hybrid beamforming approach with power flux equalization in the elevation plane,” in Proc. 49th EuMC, Paris, France, Oct. 2019.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Heat transfer enhancement in passively cooled 5G base station antennas using thick ground planes,” in Proc. 13th EuCAP, Krakow, Poland, Apr. 2019.
Y. Aslan, S. Salman, J. Puskely, A. Roederer and A. Yarovoy, “5G multi-user system simulations in line-of-sight with space-tapered cellular base station phased arrays,” in Proc. 13th EuCAP, Krakow, Poland, Apr. 2019.
Y. Aslan, M. Candotti and A. Yarovoy, “Synthesis of multi-beam space-tapered linear arrays with side lobe level minimization in the presence of mutual coupling,” in Proc. 13th EuCAP, Krakow, Poland, Apr. 2019.
Y. Aslan, J. Puskely, A. Roederer and A. Yarovoy, “Synthesis of multiple beam linear arrays with uniform amplitudes,” in Proc. 12th EuCAP, London, UK, Apr. 2018.
J. Puskely, Y. Aslan, A. Roederer and A. Yarovoy, “SIW based antenna array with power equalization in elevation plane for 5G base stations,” in Proc. 12th EuCAP, London, UK, Apr. 2018.
Y. Aslan and A. Yarovoy, “Reduction of mutual coupling between closely spaced patch antennas using dielectric stratification technique,” in Proc. 47th EuMC, pp. 248-251, Nuremberg, Germany, Oct. 2017.
Projects & Partners
Large-Scale
Funding: Dutch Research Council (NWO) - NXP Partnership Program on Advanced 5G Solutions
Project title: "Antenna Topologies and Front-end Configurations for Multiple Beam Generation"
Period : Jan. 2017 - Mar. 2023Funding: European Space Agency (ESA) Open Space Innovation Platform
Project title: "A Key to 5G/6G Flexible Space Connection: Antenna Butler-like Multiple Beam Forming"
Period: Aug. 2020 - Aug. 2022Funding: Dutch Research Council (NWO) - Investment Grant Large
Project title: "Phased Array Radar for Extreme Weather Analysis and Prediction (PHARA)"
Period: May 2023 - nowFunding: National Growth Fund (Rijksoverheid)
Project title: "6G Future Network Services"
Period: Sep. 2023 - nowFunding: NXP IPCEI (Important Projects of Common European Interest)
Project title: "DoAnt: Joint Development of Sparse Antenna Array Topology and High Resolution DoA Estimation"
Period: May. 2024 - now
Small-Scale
Funding: TU Delft Microelectronics Synergy Grant
Project title: "Integrated Antenna Design and Cooling Concepts in Active Phased Arrays"
Period: Jul. 2022 - nowFunding: TU Delft Space Institute Seed Grant
Project title: "SpaceTaper: A Spatially Tapered Phased Array Antenna for Future Space Communications"
Period: Jun. 2022 - nowFunding: TU Delft Bioengineering Institute Master Grant
Project title: "DegRadar: Realtime Radar Sensing of Biodegradable Implant Antennas for Infection Detection"
Period: Sep. 2023 - nowFunding: TU Delft Bioengineering Institute Research Grant
Project title: "Innovative 3D-Printed Heatsink Antennas for Wireless Body Area Networks"
Period: Starts in Jan. 2024
Supervision
Current Ph.D. students:
S. Hehenberger - Started in 2021
Topic: Design strategies and antenna concepts enabled by additive manufacturing (industrial project at German Aerospace Center)
N. B. Onat - Started in Sep. 2021
Topic: Machine-learning driven phased array design and beamforming
F. T. Çelik - Started in Jul. 2022
Topic: Integrated antenna design and cooling concepts in active phased arrays
C. Zhao - Started in Nov. 2023
Topic: Wave polarimetry in 6G communication and sensing
M. Ivanyi - Started in May 2024
Topic: Fast characterization of active phased array systems with the Antenna Dome (co-supervised by ELCA, TU Delft)
J. Heylen - Started in Sep 2024
Topic: Polarimetric electronically scanning arrays (industrial project at Robin Radar Systems)
A. Lamoral - Starts in Oct 2024
Topic: DoAnt: Joint development of sparse antenna array topology and high resolution DoA estimation (co-supervised by NXP)
N. Cancrinus - Starts in Oct 2024
Topic: Multibeam front-end architectures for Satcom terminals (co-supervised by Viasat)
Current Researchers:
R. Vergez - Started in Mar. 2022
Topic: Multiple Beam Hybrid Array Antenna for Satcom and for 5G and Beyond
Current M.Sc. students:
E. Hamamci - Started in Sep. 2024 (co-supervisor role, in collaboration with Robin Radar)
Topic: Synthesis of polarimetric phased arrays
J. Gui - Started in Sep. 2024 (co-supervisor role, in collaboration with TU Delft ELCA)
Topic: Assessment of indoor EMF exposure in 5G and beyond
B. Xu - Started in Sep. 2024
Topic: Development of a JCAS beamforming simulator
E. Chahanov - Started in Sep. 2024
Topic: Design of dual-functional antenna with radome
K. C. Gonzalez - Started in Feb 2023
Topic: Differentially-fed dual-functional antennas
Previous M.Sc. students:
A. Kannan - Graduates in Sep. 2024
Topic: Detection of faulty elements in IC-controlled phased arrays using sparse far-field data: a machine-learning approach
K. Qi - Graduates in Sep. 2024 (in collaboration with TU Delft Electronic Instrumentation Lab.)
Topic: RF energy harvesting concepts
N. Gopakumar - Graduated in Dec. 2023 (co-supervisor role, in collaboration with TU Delft ECTM) - Joined University of Nevada, Las Vegas as a PhD student after graduation
Topic: Wireless biodegradable resonant circuit for strain sensor in hip implant applications
R. Kooij - Graduated in Sep. 2023 (in collaboration with NXP Semiconductors) - Joined TNO after graduation
Topic: 6G antenna-in-package beam forming system modeling
S. N. Subramani - Graduated in Aug. 2023 (in collaboration with TU Delft DCSC Section)
Topic: Optimally sparse and adaptive far-field sampling and pattern reconstruction
X. Wang - Graduated in Aug. 2023 - Joined Ericsson after graduation
Topic: A preliminary study towards mm-wave wireless network topology optimization using ray tracing
K. A. Nair - Graduated in Aug. 2023 (in collaboration with DLR) - Joined NXP Semiconductors after graduation
Topic: Design of a wideband wide-angle scanning mm-wave dielectric resonator antenna array with additive manufacturing capabilities for Satcom
W. Chen - Graduated in Jun. 2023 (in collaboration with TU Delft NAS Section) - Joined Valeo after graduation
Thesis: System performance evaluation of hybrid beamforming with shaped beam patterns for mm-wave 5G base stations
C. Zhao - Graduated in Jun. 2023 - Joined TU Delft as a PhD student after graduation
Thesis: Design of series-fed antenna array design with reduced beam squint and distortion
Q. Liu - Graduated in Sep. 2022 (in collaboration with NXP Semiconductors) - Joined NMi Certin B.V. after graduation
Thesis: Design of the AiP feeding lines for 6G applications in a high definition fan-out technology
N. Birari - Graduated in Aug. 2022 - Joined Temporary Works Design (TWD) after graduation
Thesis: Power consumption analysis of 5G transmit antenna topologies and beamforming schemes
F. Stallone - Graduated in Aug. 2022 from Politecnico di Torino, Grenoble INP-Phelma, EPFL (co-supervisor role) - Joined TU Delft as a researcher after graduation
Thesis: Design, fabrication and characterization of a magnesium-based split ring resonator for pH and strain detection
A. Balasubramanian - Graduated in Oct. 2021 - Joined Ericsson after graduation
Thesis: mm-Wave Heatsink Antenna Array Design for Low-Sidelobe and Low-Temperature
G. Sudhakaran - Graduated in Sep. 2021 - Joined Ericsson after graduation
Thesis: Modeling and simulation of future multi-user communication systems
M. Buenaventura-Camps - Graduated in Jun. 2021 - Joined Robin Radar Systems after graduation
Thesis: Design of a sparse irregular array for beyond 5G base stations
S. Salman - Graduated in Aug. 2018 - Went back to Pakistan after graduation due to company contract
Thesis: Analysis of Antenna and RF Front-End Topologies for Multi-Beam Systems
Courses
Electrical Engineering Master- and Bachelor-level courses at TU Delft:
EE4C13: Wireless Systems for Electrical Engineering Applications
EEX03: Microwave Engineering
M.Sc. Thesis Topics
Below you can find a list of available Master thesis projects I offer at TU Delft. Please contact me for further details !
Antenna and beamformer design oriented projects:
EM skins for object RCS modification in smart indoor environments
Time-modulated arrays as intelligent reflecting surfaces
Reconfigurable beam forming network design for satellite terminal antennas
Dual-polarized series-fed shaped beam antenna arrays
Array signal processing and optimization oriented projects:
Antenna array optimization strategies for JCAS - joint communication and sensing
6G beam focusing in radiative near field with very large arrays
Fast antenna pattern measurements in the near field
Sensing through biodegradable implants for biomedical applications
Optimal ultrasound phased arrays for focused brain stimulation
Communication system oriented projects:
Antenna noise temperature in unconventional 5G/6G phased arrays
Optimal system use of mixed low & high quality hardware in mm-wave RF front-ends
Internship Topics
I offer academic projects for internship at TU Delft under the course ET4399. You can contact me for further details or come up with your own proposals !
Open Positions
We, the Microwave Sensing, Signals and Systems (MS3) Section at TU Delft, are an inter-disciplinary and multi-national team of researchers from academia and industry, in which antenna, signal processing, and circuit design experts collaborate to create novel wireless system solutions for the emerging communication and sensing applications.
We have built our expertise on years of research and development in the area of active phased arrays, in strong collaboration with the external partners (e.g. NXP, TNO, Thales, ESA). We are one of the leading research teams in Europe in the development of the next-generation integrated antenna array technology. We aim for the design of highly integrated arrays for efficient and cost-effective antenna and front-end solutions.
We are actively looking for self-motivated researchers to join our team who will be involved in the ongoing antenna design-oriented research projects in collaboration with our industrial partners.
We currently have a PhD vacancy on 6G radio resource management for JCAS!