Patents 

1. M. Ünlü, A. B. Şahin, M. A. Unutmaz, H. Dal, T. Kemiksiz, G. Özşahin, “Terahertz Bandında Çalışan Herhangi Bir Şekilde Yeniden Ayarlanabilir Ya Da Düzenlenebilir Bir Faz Kaydırıcı Devre,” 2022-GE-339397, Mayıs 2022.

2. M. Jarrahi, M. Unlu, C. W. Berry, S. Li, "Reconfigurable Device for Terahertz (THz) and Infrared (IR) Filtering and Modulation," US Patent 9859079, 2018.

3. M. Unlu, S. Demir, and T. Akin, “Simultaneous Phase and Amplitude Control Using Triple Stub Topology and Its Implementation Using RF MEMS Technology.” 

(WIPO Patent No. 2011034511, Mar. 2011, European Patent No. EP 2478585, Jul. 2012, Japanese Patent No. 5498581)

Journal Publications

1. A. O. Sakin, A. M. Demirtas, H. Kurt, M. Unlu, "Ultrafast pulse propagation time-domain dynamics in dispersive one-dimensional photonic waveguides, Nanophotonics, 0567, 2025.

2. A. O. Sakin, H. Kurt, M. Unlu, "Ultra-miniaturized Bloch mode metasplitters for one-dimensional grating waveguides," Optics Letters, 50 (2), 610-613, 2025.

3. A. Cemil and M. Ünlü, "Analysis of ADAS Radars with Electronic Warfare Perspective," Sensors, 22, 6142, 2022.

4. M. A. Unutmaz, G. Ozsahin, T. Abacilar, and M. Unlu, "Investigation of the Transitions for Coplanar Waveguide to Terahertz Spoof Surface Plasmon Polariton Waveguides," IEEE Transactions on Antennas and Propagation, vol. 70, no. 4, pp. 3002-3010, Apr. 2022.

5. M. A. Unutmaz, G. Ozsahin, and M. Unlu, "Optimization of Terahertz Spoof Surface Plasmon Polariton Waveguides for Maximum °/dB Performance," Journal of Lightwave Technology, vol. 39, no. 17, pp. 5508-5515, Sep. 2021.

6. Y. Cinar, S. S. Yildirim, G. Ozsahin, M. A. Unutmaz, and M. Unlu, "Modelling Terahertz Spoof Surface Plasmon Polariton Waveguides Using a Circuit Model," IEEE Transactions on Terahertz Science and Technology, vol. 11, no. 5, pp. 557-565, Sep. 2021.

7. M. A. Unutmaz and M. Unlu, "Spoof Surface Plasmon Polariton Delay Lines for Terahertz Phase Shifters," Journal of Lightwave Technology, vol. 39, no. 10 , 3187-3192, May 2021.

8. K. Demir and M. Unlu, "Miniature MEMS: Novel Key Components Toward Terahertz Reconfigurability," IEEE Journal of Microelectromechanical Systems, vol.29, no. 4, pp. 455-467, Aug. 2020  (published as a highlighted paper).

9. M. A. Unutmaz and M. Unlu, "Fixed Physical Length Spoof Surface Plasmon Polariton Delay Lines for a 2-bit Phase Shifter," Journal of the Optical Society of America B,  vol. 37, no. 4, pp. 1116-1121, Apr. 2020.

10. M. A. Unutmaz and M. Unlu, "Terahertz Spoof Surface Plasmon Polariton Waveguides: A Comprehensive Model with Experimental Verification," Nature Scientific Reports, vol. 9 , no. 1, 7616, May 2019.

11. O. Kiris, K. Topalli, and M. Unlu, "A reflectarray antenna using hexagonal lattice with enhanced beam steering capability," IEEE Access, vol. 7, pp. 45526-45532, Apr. 2019.

12. K. Elmabruk, K. Demir, H. Altan, A. B. Sahin, and M. Unlu, "Time-domain characterization of the radiation pattern of the terahertz photoconductive antennas," Journal of Infrared, Millimeter, and Terahertz Waves, vol. 40, no. 6, Jun. 2019,

13. M. A. Unutmaz and M. Unlu, "Modelling of the effective dielectric constant of planar spoof surface plasmon polariton waveguides," Electronics Letters, 53(21), 1418-1420, Oct. 2017 (published as a featured article).

14. M. A. Unutmaz and M. Unlu, "accurate sSPP waveguide dielectric modelling," Electronics Letters, 53(21), 1391, Oct. 2017.

15.  A. Yilmaz and M. Unlu, “Compensating the effects of DC bias lines on terahertz photomixer antennas using resistively loaded lines,” Journal of Infrared and Millimeter Waves, vol. 34, no. 4, pp. 420-426, Aug. 2015.

16. M. Unlu, M. Jarrahi, "Miniature Multi-Contact MEMS Switch for Broadband Terahertz Modulation," Optics Express, 22, 2014.

17. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S.-H. Yang, M. Jarrahi, "Switchable scattering meta-surfaces for broadband terahertz modulation", Nature Scientific Reports, 4, 5708, DOI:10.1038/srep05708, 2014 (Highlighted by +20 tech news websites).

18. C. W. Berry, N. Wang, M. R. Hashemi, M. Unlu, and M. Jarrahi, “Significant Performance Enhancement in Photoconductive Terahertz Optoelectronics by Incorporating Plasmonic Contact Electrodes,” Nature Communications,  4, 1622, 2013 (Highlighted by +20 tech news websites).

19. M. Unlu, S. Demir, and T. Akin, "A 15–40-GHz Frequency Reconfigurable RF MEMS Phase Shifter," IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 8, pp. 2865-2877, Aug. 2013.

20. C. W. Berry, M. R. Hashemi, M. Unlu, and M. Jarrahi, “Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters,” Journal of Visualized Experiments, 77, e50517, doi:10.3791/50517, 2013.

21. A. Zohur, H. Mopidevi, D. Rodrigo, M. Unlu, L. Jofre, and B. A. Cetiner, “RF MEMS Reconfigurable Two-Band Antenna,” IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 72-75, Jan. 2013.

22. M. Unlu, S. Demir, and T. Akin, “Triple Stub Circuit Topology as Simultaneous Insertion Phase, Amplitude and  Impedance Control Circuit for Phased Array Applications,” IET Microwaves, Antennas and Propagation, vol. 6, no. 13,  pp. 1399-1406, Dec. 2012.

23. M. Unlu, K. Topalli, H. I. Atasoy, S. Demir, O. Aydin Civi, and T. Akin, “Hybrid Connection of RF MEMS and SMT Components in an Impedance Tuner,” AEU International Journal of Electronics and Communications, vol. 64, no. 8, pp. 748-756, Aug. 2010.

24. K. Topalli, M. Unlu, H. I. Atasoy, O. A. Civi, S. Demir, and T. Akin, “Empirical Formulation of Bridge Inductance in Inductively Tuned RF MEMS Shunt Switches,” Progress In Electromagnetics Research, PIER 97, pp. 343-356, 2009.

25. E. Erdil, K. Topalli, M. Unlu, O. Aydin Civi, and T. Akin, "Frequency tunable microstrip patch antenna using RF MEMS technology," IEEE Trans. Antennas and Propagation, vol. 55, no. 4, pp. 1193-1196, Apr. 2007.

26. K. Topalli, M. Unlu, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, “A new approach for modeling Distributed MEMS Transmission Lines,” IEE Proc. Microwaves, Antennas & Propagation, vol. 153, pp. 152-162, Apr. 2006.

Other Journal Publications

1. A. O. Sakin, H. Kurt, M. Unlu, "Ultra-miniaturized Bloch mode metasplitters for one-dimensional grating waveguides," arXiv:2410.14531, 2024.

2. A. O. Sakin, A. M. Demirtas, H. Kurt, M. Unlu, "Ultrafast pulse propagation time-domain dynamics in dispersive one-dimensional photonic waveguides," arXiv:2410.13628, 2024. 

3. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S.-H. Yang, M. Jarrahi, "Fully Integrated Broadband Terahertz Modulators", SPIE Newsroom, International Society for Optics and Photonics, DOI:10.1117/2.1201410.005657, 2014.

4. M. Unlu, C. W. Berry, S. Li, S.-H. Yang, M. R. Hashemi, M. Jarrahi, "Broadband terahertz modulators based on MEMS- reconfigurable mesh filters", arXiv:1212.6562v1, 2012.

5. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Significant Radiation Enhancement in Photoconductive Terahertz Emitters by Incorporating Plasmonic Contact Electrodes", arXiv:1209.1680v1, 2012.

Invited/Plenary Talks

1. M. A. Unutmaz, M. Unlu, “Integration of Terahertz Spoof Surface Plasmon Polaritons in Computer-Aided-Design Environment,” Smart NanoMaterials 2020: Advances, Innovation and Applications (SNAIA 2020), Paris, France, 8-11 Dec. 2020 (invited talk).

2. M. Unlu, "Terahertz Spoof Surface Plasmon Polaritons: Modelling, Design, and Experimental Characterization," the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019, Lisbon, Portugal, 23-26 Jul. 2019 (invited talk).

3. M. A. Unutmaz, M. Unlu, “Design and Characterization of Integrated Spoof Surface Plasmon Polaritons,” SPb Photonic, Optoelectronic, & Electronic Materials (SPb-POEM), St. Petersburg, Russia, 24-27 Apr. 2019 (invited talk).

4. M. A. Unutmaz and M. Unlu, “Modelling of the spoof-Surface Plasmon Polariton Waveguides and Applications”, Smart NanoMaterials 2018: Advances, Innovation and Applications, Paris, France, 9-13 Dec. 2018 (invited talk).

5. M. Unlu, “A Review on Reconfigurable Terahertz Components Using Nano-Actuators,” 2017 IEEE 40th International Conference on Telecommunications and Signal Processing, Barcelona, Spain, Jul. 5-7, 2017 (invited talk).

6. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "High-performance terahertz spatial light modulators based on reconfigurable diamagnetic meta-surfaces", Proc. International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Bordeaux, France, Sep. 16-21, 2013 (Invited talk).

7. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Broadband Terahertz Modulation Through Reconfigurable Meta-Surfaces With Diamagnetic Switching Capability", Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Mainz, Germany, September 1-6, 2013 (Invited talk).

8. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Reconfigurable diamagnetic meta-molecules for broadband terahertz modulation", Proc. SPIE Optics and Photonics Conference, San Diego, CA, Aug. 25-29, 2013 (Invited talk).

9. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Plasmonics-Enhanced Photoconductive Terahertz Emitters", Proc. International Microwave and Optoelectronic Conference, Rio de Janeiro, Brazil, August 4-7, 2013 (Plenary talk).

10. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Terahertz wave manipulation through electromechanically reconfigurable diamagnetic surfaces", Proc. International Symposium on Photoelectronic Detection and Imaging, Beijing, China, Jun. 25-27, 2013 (Invited talk).

11. M. Unlu, C. W. Berry, S. Li, S.-H. Yang, M. R. Hashemi, M. Jarrahi, "A High-performance Terahertz Spatial Light  Modulator based on Reconfigurable Mesh Filters", Proc. 4th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Sharjah, UAE, 18-22 Mar., 2013 (Invited talk).

12. M. Unlu, C. W. Berry, S. Li, S-H. Yang, M. R. Hashemi, M. Jarrahi, "Broadband terahertz modulation using reconfigurable mesh filters", Proc. IEEE Wireless and Microwave Technology Conference, Orlando, FL, USA, Apr. 7-9, 2013 (Invited talk).

13. C. W. Berry, M. Unlu, M. R. Hashemi, M. Jarrahi, "Use of plasmonic gratings for enhancing the quantum efficiency of photoconductive Terahertz sources," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep. 23-28, 2012 (Invited talk).

14. S. Li, M. Unlu, M. Jarrahi, "Reconfigurable mesh filters for Terahertz modulation," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep. 23-28, 2012 (Invited talk).

International Conference Publications

1. A. O. Sakın, B. Akçay, A. C. Sonğur, M. Ünlü, "Periodic topology optimization‐based inverse design of slow-light in silicon nitride one-dimensional grating waveguides," SPIE Photonics Europe, Strasbourg, France, 7-11 Apr. 2024 (oral presentation).

2. A. O. Sakın, B. Akçay, A. C. Sonğur, M. Ünlü, "Optimized amplitude distributions for grating and side lobe suppression in optical phased array antennas," SPIE Photonics Europe, Strasbourg, France, 7-11 Apr. 2024 (poster presentation).

3. A. O. Sakın, B. Akçay, A. C. Sonğur, M. Ünlü, "Ultra-miniaturized crossings based on digitized metamaterials for one-dimensional grating waveguides," SPIE Photonics Europe, Strasbourg, France, 7-11 Apr. 2024 (poster presentation).

4. A. O. Sakın, B. Akçay, A. C. Sonğur, M. Ünlü, "Design of polarization-sensitive meta micro-reflectors in Bragg grating waveguide," SPIE Photonics Europe, Strasbourg, France, 7-11 Apr. 2024 (poster presentation).

5. A. C. Sonğur, M. Demircioğlu, B. Akçay, A. O. Sakın, M. Ünlü, "Asymmetric terahertz spoof surface plasmon polariton antennas with end-fire radiation," SPIE Photonics Europe, Strasbourg, France, 7-11 Apr. 2024 (poster presentation).

6. A. O. Sakın, H. A. Güneş, B. Akcay, A. C. Sonğur, M. Ünlü, "Ultracompact tapers & splitter for fishbone-like grating waveguides," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

7. A. O. Sakın, B. Akcay, H. A. Güneş, A. C. Sonğur, M. Ünlü, "Metamaterial-assisted power division: An inverse design study in 1D grating waveguides," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

8. A. O. Sakın, A. C. Sonğur, H. A. Güneş, B. Akcay, M. Ünlü, "Demonstration of an ultra-sharp bend in 1D grating waveguides based on inverse design," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

9. M. Demircioğlu, M. A. Unutmaz, M. Ünlü, "A Planar, NEMS-Based Terahertz Phase Shifter Using Subwavelength Confinement Waveguides," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

10. M. Demircioğlu, M. A. Unutmaz, M. Ünlü, "Design of Subwavelength Confinement Waveguides at 1 THz Band," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (oral presentation).

11. Y. Çolak, M. Demircioğlu, M. A. Unutmaz, M. Ünlü, "Investigation of Terahertz SSPP Waveguides Using TRL Calibration," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (oral presentation).

12. A. C. Sonğur, A. O. Sakın, B. Akcay, H. A. Güneş, M. Ünlü, "A Terahertz Time-Domain Antenna Array based on a Parametric Study," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

13. A. C. Sonğur, A. O. Sakın, H. A. Güneş, B. Akcay, M. Ünlü, "A Terahertz Lens Antenna Array Design for Beam Steering in Time-Domain," META 2023 - The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Paris, France, 18-21 Jul. 2023 (poster presentation).

14. B. Akcay, H. A. Güneş, H. Kurt, M. Ünlü, "A fiber-to-waveguide, 1D grating coupler design using genetic algorithm for 1550 nm applications," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (oral presentation).

15. M. A. Unutmaz, M. Demircioğlu, M. Ünlü, "A 135 degree, spoof surface plasmon polariton bend for 1 THz band," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (oral presentation). 

16. H. A. Güneş, H. Kurt, M. Ünlü, "Waveguide-to-substrate, vertical bend coupler design for 3D photonic integrated circuits," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (poster presentation).

17. A. O. Sakın, H. A. Güneş, H. Kurt, M. Ünlü, "Genetic algorithm-based, on-chip, fishbone grating waveguide and transition design for time-domain operation," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (poster presentation).

18. A. C. Sonğur, M. Ünlü, "Comparison of time-domain antenna performances for the terahertz photoconductive sources and detectors," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (poster presentation).

19. M. Demircioğlu, M. A. Unutmaz, M. Ünlü, "Investigation of the loss performance of the spoof surface plasmon polariton waveguides at 1 THz band," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (poster presentation). 

20. M. A. Unutmaz, M. Ünlü, "Optimizing the performance of the CPW-to-spoof surface plasmon polariton waveguides for 0.3 THz band," SPIE Photonics Europe, Strasbourg, France, 3-7 Apr. 2022 (poster presentation). 

21. U. Uluer, K. K. Tokgoz, E. Zencir and M. Unlu, "The Effect of MOS Transistor Body Connection on Sub-THz Fundamental Oscillator Performance Above 200 GHz in 65-nm CMOS," 13th International Conference on Electrical and Electronics Engineering (ELECO), pp. 514-517, 2021.

22. M. A. Unutmaz and M. Unlu, "Investigating the Loss Mechanism in Terahertz Spoof Surface Plasmon Polaritons," OSA Advanced Photonics Congress, Washington, DC, USA, 26–29 Jul. 2021.

23. Y. Cinar, S. S. Yildirim, G. Ozsahin, M. A. Unutmaz, and M. Unlu, "A CAD model for the Spoof Surface Plasmon Polariton Waveguides for Terahertz Integrated Circuits," OSA Advanced Photonics Congress, Washington, DC, USA, 26–29 Jul. 2021.

24. M. A. Unutmaz, M. Unlu, “Integration of Terahertz Spoof Surface Plasmon Polaritons in Computer-Aided-Design Environment,” Smart NanoMaterials 2020: Advances, Innovation and Applications (SNAIA 2020), Paris, France, 8-11 Dec. 2020 (invited talk).

25. M. A. Unutmaz, M. Unlu, “Design and simulation of spoof surface plasmon polariton delay lines at 1 THz,” SPIE Photonics Europe, Terahertz Photonics, Strasbourg, France, 6-10 Apr. 2020 (poster presentation/virtual talk).

26. M. Unlu, "Terahertz Spoof Surface Plasmon Polaritons: Modelling, Design, and Experimental Characterization," the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019, Lisbon, Portugal, 23-26 Jul. 2019 (invited talk).

27. G. Ozsahin, M. A. Unutmaz, and M. Unlu, "A Circuit Model for the Spoof Surface Plasmon Polariton Waveguides for the Terahertz Band," the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019, Lisbon, Portugal, 23-26 Jul. 2019.

28. M. A. Unutmaz, M. Unlu, “Design and Characterization of Integrated Spoof Surface Plasmon Polaritons,” SPb Photonic, Optoelectronic, & Electronic Materials (SPb-POEM), St. Petersburg, Russia, 24-27 Apr. 2019 (invited talk).

29. M. A. Unutmaz and M. Unlu, “Modelling of the spoof-Surface Plasmon Polariton Waveguides and Applications”, Smart NanoMaterials 2018: Advances, Innovation and Applications, Paris, France, 9-13 Dec. 2018 (invited talk).

30. K. Elmabruk, K. Demir, A. B. Sahin, H. Altan, M. Unlu, “Radiation Pattern Characterization of Terahertz Photoconductive Antennas Using Time-Domain Spectroscopy System,” 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, USA, 8-13 Jul. 2018.

31. T. Simsek, G. Ozsahin, O. Kiris, S. Kose, V. Akan, K. Topalli, M. Unlu, “Analysis of Nested Double Split Ring Resonator for Linearly Polarized Dual Band Reflectarray,” 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, USA, 8-13 Jul. 2018.

32. M. A. Unutmaz, M. Unlu, “Design and Simulation of Fixed Physical Length Planar Spoof Surface Plasmon Polariton-mode Delay Lines for a 3-bit 360° Phase Shifter for Terahertz Band,” 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, USA, 8-13 Jul. 2018.

33. M. A. Unutmaz, M. Unlu, “Design of a 4-Bit Spoof Surface Plasmon Polariton Phase Shifter for the Terahertz Band,” 12th European Conference on Antennas and Propagation (EuCAP 2018), London, UK, 9-13 Apr. 2018.

34. M. Unlu, “A Review on Reconfigurable Terahertz Components Using Nano-Actuators,” 2017 IEEE 40th International Conference on Telecommunications and Signal Processing, Barcelona, Spain, Jul. 5-7, 2017 (invited talk).

35. M., Kandaz, H., Dal, M. Unlu, “Analysis of Gold Micro-Beams with Higher Order Continuum Theories,” 88th GAMM Annual Meeting, Germany, 6-10 March 2017.

36. A. Yilmaz, M. Unlu, “Efficiency Enhancement of Bowtie Photomixer Antenna by Using Resistively Loaded Line,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

37. K. Demir, AB Sahin, M. Unlu, “Design of a Frequency Reconfigurable, Terahertz Folded Antenna for Photomixers,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

38. K. Demir, AB Sahin, M. Unlu, “Modelling of Photonic Band Gap Filters for Terahertz Photoconductive Antennas and Photomixers,” 2017IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

39. SB. Celik, K. Demir, AB Sahin, M. Unlu, “Design of a Phase Shifting Impedance Tuner for Terahertz Photomixers Arrays,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

40. SB. Celik, K. Demir, AB Sahin, M. Unlu, “Design of a Terahertz Beam-Steering Photomixer Array,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

41. MA. Unutmaz and M. Unlu, “Modelling of the Effective Dielectric Constant of Corrugated Planar Goubau Lines for Terahertz Band,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

42. MA. Unutmaz and M. Unlu, “Design of Spoof Surface Plasmon Polariton Based Terahertz Delay Lines,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

43. G. Özsahin, T.  Simsek, M. Unlu, O. Kiris, S. Kose, H. Mustacoglu, F. Ozturk, V. Akan, “Parametric Analysis of Double-Split Ring Resonator as a Reflectarray Unit Cell,” 2017 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  San Diego, California, USA, 9-14 July 2017.

44. K. Demir, H Bilgin, AB Sahin, M. Unlu, “Design of a frequency reconfigurable, terahertz antenna for photomixers,” Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Copenhagen, Denmark, Sep. 25-30, 2016.

45. M. Unlu, A. Yilmaz, C. Yilmaz, “Frequency and impedance reconfigurable antennas for terahertz photomixers,” 31th URSI General Assembly and Scientific Symposium, Beijing, China, Aug. 16-23, 2014.

46. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "High-performance terahertz spatial light modulators based on reconfigurable diamagnetic meta-surfaces", Proc. International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Bordeaux, France, Sep. 16-21, 2013 (Invited talk).

47. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Broadband Terahertz Modulation Through Reconfigurable Meta-Surfaces With Diamagnetic Switching Capability", Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Mainz, Germany, September 1-6, 2013 (Invited talk).

48. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Reconfigurable diamagnetic meta-molecules for broadband terahertz modulation", Proc. SPIE Optics and Photonics Conference, San Diego, CA, Aug. 25-29, 2013 (Invited talk).

49. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Plasmonics-Enhanced Photoconductive Terahertz Emitters", Proc. International Microwave and Optoelectronic Conference, Rio de Janeiro, Brazil, August 4-7, 2013 (Plenary talk).

50. M. Unlu, C. W. Berry, S. Li, M. R. Hashemi, S-H. Yang, M. Jarrahi, "A Microelectromechanically Reconfigurable Mesh  Filter for High-Performance Terahertz Modulation", Proc. IEEE International Antennas and Propagation Symposium, Orlando, FL, Jul. 7-12, 2013.

51. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Plasmonic Photoconductive Antennas for Significant Terahertz Radiation Enhancement", Proc. IEEE International Antennas and Propagation Symposium, Orlando, FL, Jul. 7-12, 2013 (Best student paper award, 2nd place).

52. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Nanoscale Contact Electrodes for Significant Radiation Power Enhancement in Photoconductive Terahertz Emitters", IEEE Microwave Symposium Digest, Seattle, WA, June 2-7, 2013 (Best student paper award, 3rd place).

53. M. Unlu, M. R. Hashemi, C. W. Berry, S. Li, S-H. Yang, M. Jarrahi, "Terahertz wave manipulation through electromechanically reconfigurable diamagnetic surfaces", Proc. International Symposium on Photoelectronic Detection and Imaging, Beijing, China, Jun. 25-27, 2013 (Invited talk).

54. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Substantial Radiation Enhancement in Photoconductive Terahertz Emitters by Utilizing Plasmonic Contact Electrodes", Proc. Conference of Lasers and Electro-Optics (CLEO), San Jose, CA, 9-14 June 2013.

55. M. Unlu, C. W. Berry, S. Li, S.-H. Yang, M. R. Hashemi, and M. Jarrahi, "Electromechanically Switchable Diamagnetism   for Efficient Terahertz Modulation", Proc. Conference of Lasers and Electro-Optics (CLEO), San Jose, CA, 9-14 June 2013.

56. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "High Power Photoconductive Terahertz Emitters Utilizing Nanoscale Plasmonic Gratings", Proc. International Workshop on Optical Terahertz Science and Technology, Kyoto, Japan, Apr. 1-5, 2013.

57. M. Unlu, C. W. Berry, S. Li, S.-H. Yang, M. R. Hashemi, M. Jarrahi, "A Microelectromechanically Controlled Broadband Terahertz Modulator", Proc. International Workshop on Optical Terahertz Science and Technology, Kyoto, Japan, Apr. 1- 5, 2013.

58. M. Unlu, C. W. Berry, S. Li, S.-H. Yang, M. R. Hashemi, M. Jarrahi, "A High-performance Terahertz Spatial Light  Modulator based on Reconfigurable Mesh Filters", Proc. 4th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Sharjah, UAE, 18-22 Mar., 2013 (Invited talk).

59. M. Unlu, C. W. Berry, S. Li, S-H. Yang, M. R. Hashemi, M. Jarrahi, "Broadband terahertz modulation using reconfigurable mesh filters", Proc. IEEE Wireless and Microwave Technology Conference, Orlando, FL, USA, Apr. 7-9, 2013 (Invited talk).

60. C. W. Berry, M. Unlu, M. R. Hashemi, M. Jarrahi, "Use of plasmonic gratings for enhancing the quantum efficiency of photoconductive Terahertz sources," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep. 23-28, 2012 (Invited talk).

61. S. Li, M. Unlu, M. Jarrahi, "Reconfigurable mesh filters for Terahertz modulation," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep. 23-28, 2012 (Invited talk).

62. M. Unlu and S. Li, "Miniature MEMS switches for reconfigurable Terahertz metamaterials," 13th Int. Symp. on RF  MEMS and RF Microsystems (MEMSWAVE 2012), Antalya, Turkey, 2-4 Jul. 2012.

63. 35.  M. Unlu, H. Mopidevi, A. Zohur, and B. A. Cetiner, "Frequency reconfigurable, 220–5000 MHz, five-band RF MEMS PIFA," presented at the IEEE Int. Midwest Symp. Circuits and Systems (MWSCAS), Boise, ID, USA, Aug. 2012, pp. 65-68.

64. M. Unlu, Y. Damgaci, H. S. Mopidevi, O. Kaynar, and B. A. Cetiner, “Reconfigurable, tri-band RF MEMS PIFA antenna,” presented at the IEEE Int. Antennas and Propagation Symp., Spokane, WA, USA, Jul. 2011, pp. 1563-1565.

65. D. Rodrigo, Y. Damgaci, M. Unlu, B. A. Cetiner, J. Romeu and L. Jofre, “Antenna reconfigurability based on a novel parasitic pixel layer,” European Conf. on Antennas and Propagation, Rome, Italy, Apr. 2011, pp. 3497-3500.

66. D. Rodrigo, L. Jofre, M. Unlu, Y. Damgaci, B. A. Cetiner, and J. Romeu, “Genetic reconfigurability of a multi-size pixelled antenna,” presented at the IEEE Int. Conf. Wireless Information Technology and Systems (ICWITS), Honolulu, HI, USA, Aug. 28-Sept. 3, 2010, pp. 1-4.

67. D. Rodrigo, Y. Damgaci, M. Unlu, L. Jofre, and B. A. Cetiner, “Small pixelled antenna  with  MEMS-Reconfigurable radiation pattern,” presented at the IEEE Int. Antennas and Propagation Symp., Toronto, Ontario, Canada, Jul. 2010, pp. 1-4.

68. K. Topalli, M. Unlu, I. Istanbulluoglu, H. I. Atasoy, O. Bayraktar, O. Aydin Civi, Ş. Demir, S. Koc, and T. Akin, “Reconfigurable RF MEMS devices and antennas,” 5th International Conference on Electrical and Electronics Engineering (ELECO 2007), pp.204-209, Bursa, Turkey, 5-9 Dec. 2007.

69. M. Unlu, H. I. Atasoy, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "Double stub and triple stub RF MEMS impedance tuners," Proceedings of 8th International Symposium on RF MEMS and RF Microsystems, MEMSWAVE, Barcelona, Spain, pp. 169-172, 26-29 Jun. 2007.

70. O. Bayraktar, K. Topalli, M. Unlu, O. Aydin Civi, S. Demir, and T. Akin, “Beam switching reflectarray using RF MEMS technology,” European Conference on Antennas and Propagation, Edinburgh, UK, 11-16 Nov. 2007, pp. 1-6.

71. O. Bayraktar, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, H. I. Atasoy, O. A. Civi, S. Demir, S. Koc, T. Akin, “Reconfigurable reflectarray using RF MEMS technology,” European Conference on Antennas and Propagation, Nice, France, 6-10 Nov. 2006, on CD-ROM.

72. E. Erdil, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, H. I. Atasoy, O. Bayraktar, O. A. Civi, S. Demir, S. Koc, T.  Akin, “Reconfigurable slot antenna with fixed-fixed beam type RF MEMS capacitors,” European Conference on Antennas and Propagation, Nice, France, 6-10 Nov. 2006.

73. K. Topalli, M. Unlu, O. Aydin Civi, S. Demir, S. Koc, and T. Akin, “A monolithic phased array using 3-bit RF MEMS phase shifters,” 2006 IEEE AP-S International Symposium and  USNC/URSI  National  Radio  Science  Meeting,  Albuquerque, New Mexico, USA, pp. 517-520, Jul. 2006.

74. M. Unlu, K. Topalli, H. I. Atasoy, E. U. Temocin, I. Istanbulluoglu, O. Bayraktar, S. Demir, O. A. Civi, S. Koc, and T. Akin, “A reconfigurable RF MEMS triple stub impedance matching network,” European Microwave Conference  2006, Manchester, United Kingdom, pp. 1370-1373, 10-15 Sep. 2006.

75. H. I. Atasoy, K. Topalli, M. Unlu, I. Istanbulluoglu, O. Bayraktar, E. U. Temocin, S. Demir, O. A. Civi, S. Koc, and T. Akin, “Investigation of on-wafer TRL calibration accuracy dependence on transitions and probe positioning,” European Microwave Conference 2006, Manchester, United Kingdom, pp. 1582-1585, 10-15 Sep. 2006.

76. M. Secmen, K. Topalli, M. Unlu, E. Erdil, O. Aydin Civi, and A. Hizal; “Dual wideband antenna analysis for linear FMCW radar applications,” 2006 IEEE 14th Signal Processing and Communications, pp. 1-4, 17-19 Apr. 2006, Antalya, Turkey

77. H. I. Atasoy, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, O. Bayraktar, S. Demir, O. Aydin-Civi, S. Koc, and T.  Akin, “Metal-to-metal and capacitive contact RF MEMS shunt switch structures,” 7th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. 154-156, Orvieto, Italy,  27-30 Jun. 2006.

78. 50.  M. Unlu, K. Topalli, H. I. Atasoy, E. U. Temocin, I. Istanbulluoglu, O. Bayraktar, S. Demir, O. Aydin-Civi, S. Koc, and T.  Akin, “A reconfigurable RF MEMS impedance tuner for impedance matching of a two-stage low noise amplifier,” 7th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. 115-118, Orvieto, Italy,  27-30 Jun. 2006.

79. S. Onat, M. Unlu, L. Alatan, S. Demir, and T. Akin, “Design of a re-configurable dual frequency microstrip antenna with integrated RF MEMS switches,” IEEE Antennas and Propagation Society International Symposium, Volume: 2A, pp. 384- 387, 3-8 Jul. 2005.

80. E. Erdil, S. Onat, K. Topalli, I. Istanbulluoglu, M. Unlu, S. Demir, L. Alatan, O. Aydin Civi, S. Koc, and T. Akin, “Reconfigurable antenna structures using MEMS technology,” 6th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. 35-38, Switzerland, 23-24 Jun. 2005.

81. M. Unlu, K. Topalli, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, “A Parametric Study On Modeling Distributed Mems Transmission Lines”, 34th European Microwave Conference, pp.1157-1160, Amsterdam, The Netherlands, Oct. 11-15, 2004.

82. M. Unlu, K. Topalli, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, “Design and modeling of a reconfigurable triple stub impedance matching network using Distributed MEMS Transmission Lines,” 5th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. I17-I20, Uppsala, Sweden, 30 Jun.-2 Jul. 2004.

83. K. Topalli, M. Unlu, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, “A parametric modeling study on Distributed MEMS Transmission Lines,” 5th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. 13-16 Uppsala, Sweden, 30 Jun.-2 Jul. 2004.

84. 56.  K. Topalli, M. Unlu, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, “A new model for Distributed MEMS Transmission Lines,” 2004 AP-S International Symposium and USNC/URSI National Radio Science Meeting, pp. 2855- 2858, Monterey, California, 20-26 Jun. 2004.

85. M. Unlu, K. Topalli, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "New MEMS switch structures for antenna applications," 2002 IEEE AP-S  International  Symposium  and  USNC/URSI  National  Radio  Science  Meeting,  p. 134,  San Antonio, Texas, 16-21 Jun. 2002.

86. M. Unlu, K. Topalli, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "RF MEMS adjustable impedance matching network and adjustable power divider," 2002 IEEE AP-S International Symposium and USNC/URSI  National  Radio Science Meeting, pp. 26-29, San Antonio, Texas, 16-21 Jun. 2002.

87. H. Sagkol, K. Topalli, M. Unlu, O. Aydin Civi, S. Koc, S. Demir, and T. Akin, "A monolithic phased array with RF MEMS technology," 2002 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, pp. 760-763, San Antonio, Texas, 16-21 Jun. 2002.

National Conference Publications - Refereed 

1.  A. Yılmaz, M. Ünlü, “Foto-karıştırıcı Papyon Anten Üzerindeki DC Öngerilim Hat Etkisi,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish) (Student paper contest finalist).

2.  K. Demir, H. Bilgin, A. B. Şahin, M. Ünlü, “Fotokarıştırıcılar için Frekansı Ayarlanabilen Terahertz Anten Tasarımı,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish).

3.  M. A. Unutmaz, A. B. Şahin, M. Ünlü, “Oluklu Düzlemsel Goubau Hatları’nın Efektif Dielektrik Sabitinin Modellenmesi,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish).

4.  S. B. Çelik, K. Demir, A. B. Şahin, M. Ünlü, “Terahertz Fotokarıştırıcılar için Yüksek Giriş Empedanslı ve Faz Kontrollü Üç Saplamalı Devre Tasarımı,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish).

5.  A. Güven, T. Şimşek, G. Özşahin, K. Demir, M. Ünlü, “Fotokarıştırıcılar İçin Arşimet Spiral Anten Parametre Analizi,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish).

6.  E. Kobal, Ş. Demir, M. Ünlü, “Özel 3 Saplamalı Yapılar ile Baz İstasyonu Antenlerinin Verimlerinin Arttırılması,” National URSI Symposium Turkey, Ankara, Türkiye, 1-3 Eylül 2016 (in Turkish).

7.  E. U. Temoçin, K. Topallı, M. Ünlü, I. Istanbulluoğlu, H. I. Atasoy, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “Eşdüzlemsel dalga klavuzundan mikroşerit hatta geçis üzerine çalısmalar,” National URSI Symposium Turkey, pp. 448- 450, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

8.  Ö. Bayraktar, K. Topallı, M. Ünlü, I. Istanbulluoğlu, E. U. Temoçin, H. I. Atasoy, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “RF MEMS teknolojisi ile yansıtıcı dizi anteni tasarımı,” National URSI Symposium Turkey, pp. 438-440, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

9.  H. I. Atasoy, M. Ünlü, K. Topallı, I. Istanbulluoğlu, E. U. Temoçin, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “TRL kalibrasyonunda uç konumlandırmasi ve geçislerin etkileri,” National URSI Symposium Turkey, pp. 426-428, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

10.  I. Istanbulluoğlu, K. Topallı, E. U. Temoçin, H. I. Atasoy, M. Ünlü, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “RF MEMS teknolojisi kullanılarak tasarlanmış ayarlanabilir bant geçiren bağlanmış-hat süzgeç,” National URSI Symposium Turkey, pp. 416-418, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

11.  K. Topallı, M. Ünlü, Ö. Aydın Çivi, Ş. Demir, S. Koç ve T. Akın, “RF MEMS teknolojisi ile tek parça faz dizili anten yapısı,” National URSI Symposium Turkey, pp. 413-415, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

12.  H. I. Atasoy, K. Topallı, M. Ünlü, I. Istanbulluoğlu, E. U. Temoçin, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “RF MEMS teknolojisi ile kapasitif ve metal-metal bağlantılı paralel anahtar yapıları”, National URSI Symposium Turkey, pp. 410-412, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

13.  M. Ünlü, K. Topallı, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “RF MEMS teknolojisi ile ayarlanabilir empedans uyumlama devresi,” National URSI Symposium Turkey, pp. 407-409, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

14.  E. Erdil, K. Topallı, M. Ünlü, Ö. Aydın Çivi ve T. Akın, “RF MEMS kapasitörler ile rezonans  frekansı  ayarlanabilen antenler,” National URSI Symposium Turkey, pp. 404-406, Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

15.  K. Topallı, M. Ünlü, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “RF MEMS teknolojisi ile mikroşerit ve eşdüzlemsel dalga kılavuzu hat üstünde paralel anahtar yapıları,” National URSI Symposium Turkey, pp. 370-372, 8-10 September 2004 (in Turkish).

16.  M. Ünlü, K. Topallı, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, “Sıralanmış MEMS iletim hatları için yeni bir model,” National URSI Symposium Turkey, pp. 435-437, 8-10 September 2004 (in Turkish).

17.  K. Topallı, H. Sağkol, M. Ünlü, Ö. Aydin Çivi, S. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile faz dizili anten," National URSI Symposium Turkey, pp. 134-137, September 2002 (in Turkish).

18.  H. Sağkol, M. Ünlü, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile mikrodalga faz kaydırıcıları," National URSI Symposium Turkey, pp. 138-141, September 2002 (in Turkish).

19.  M. Ünlü, H. Sağkol, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile ayarlanabilir empedans uyumlama ve güç bölücü devreleri," National URSI Symposium Turkey, pp. 142-145, September 2002 (in Turkish).

20.  M. Ünlü, H. Sağkol, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "Anten uygulamaları için yeni MEMS anahtar yapıları," National URSI Symposium Turkey, pp. 146-149, September 2002 (in Turkish)