Publications

Citations

Google Scholar: 1757 citations (h-Index =22, i10-Index = 38)

Research Gate: 1350 citations (h-index = 20)

Scopus: 1201 citations (h-Index = 18)

Web of Science: 1043 (912+98*+15**+18***) citations (h-Index = 16)

(WoS, excluding self-citations: 931 (828+79*+7**+17***) citations)

(*) From “citation search” of Web of Science-citations to publications which are not directly listed in the basic author search of Web of Science .

(**) Missing citations added from Web of Science-Cited References for our Int. Conf. Paper, SPIE-2016.

(***) Missing citations due to name variations (cited in WoS citation search)

International Refereed Journal Papers

  1. N. Karacan, G. Turhan-Sayan and E. Ekmekci, “Sensitivity Analyses for All-Dielectric Absorber Structures Having Different Dielectric Resonator Geometries and Investigation of the Effect of Boundary Conditions on the Absorption Spectra,”  Electrica (E-SCI ve TR-DİZİN), Electrica 2024; 24(1): 163-174, January 31, 2024. DOI: 10.5152/electrica.2024.23064
  2. G. O. Arican, O. Sen and G. Turhan-Sayan, “A Novel Miniaturized X-Band Coplanar Waveguide Branch-Line Coupler using T- and π-type Equivalent Transmission Lines,”  International Journal of RF and Microwave Computer-Aided Engineering (Wiley), online published on March 19, 2022 . DOI: https://doi.org/10.1002/mmce.23160
  3. N. Karacan, E. Ekmekci and G. Turhan-Sayan, “Response to “Comment on ‘Sliding planar conjoined cut-wire-pairs: A novel approach for splitting and controlling the absorption spectra'” [J. Appl. Phys. 124, 105103 (2018)],” Journal of Applied Physics (Vol.128, Issue 12), published online in September 24, 2020. DOI: https://doi.org/10.1063/5.0018386 .
  4. I. Ozbay, A. Ghobadi, B. Butun and G. Turhan-Sayan, “Bismuth plasmonics for extraordinary light absorption in deep sub-wavelength geometries,” Optics Letters, Vol. 45   Issue: 3   pp. 686-689, February 1, 2020 . (Published online in January 30, 2020). DOI:  https://doi.org/10.1364/OL.45.000686 .
  5. O. Yesilyurt and G. Turhan-Sayan, “Metasurface Lens for Ultra-Wideband Planar Antenna,” IEEE Transactions on Antennas and Propagation, Vol. 68, Issue 2, pp. 719-726, February 2020. (Early Access Online in September 16, 2019.) DOI: https://doi.org/10.1109/TAP.2019.2940462 .
  6. K. Üstün and G. Turhan-Sayan, “Broadband LWIR and MWIR Metamaterial Absorbers with a Simple Design Topology: Almost Perfect Absorption and Super-Octave Band operation in MWIR Band,”  Journal of the Optical Society of America B: Optical Physics (JOSA-B), Volume 34, Issue 7, 2017, Pages D86-D94, Optica Publishing Group (former OSA Publising), USA, July 2017. (DOI: https://doi.org/10.1364/JOSAB.34.000D86 )
  7. K. Üstün and G. Turhan-Sayan, “Ultra-broadband long-wavelength infrared metamaterial absorber based on a double-layer metasurface structure,” Journal of the Optical Society of America B: Optical Physics (JOSA-B), Vol.34, No. 2, pp.456-462 (DOI: https://doi.org/10.1364/JOSAB.34.000456), Optica Publishing Group (former OSA Publising), USA, February 2017.
  8. S. Kocaman and G. Turhan Sayan, “Comparison of coherently coupled multi-cavity and quantum dot embedded single cavity systems,” Optics Express, Vol. 24, Issue 25, pp. 29329-29341  https://doi.org/10.1364/OE.24.029329 , Optica Publishing Group (former OSA Publishing), USA, 12 December 2016.
  9. K. Ustun and G. Turhan-Sayan, “Wideband Long Wave Infrared Metamaterial Absorbers based on Silicon Nitride,” Journal of Applied Physics,  J. Appl. Phys. 120, 203101 (2016);  http://dx.doi.org/10.1063/1.4968014 , AIP Publishing, USA, November 2016.
  10. B. Öner, K. Üstün, H. Kurt, A. K. Okyay and G. Turhan-Sayan, “Large bandwidth mode order converter by differential waveguides,” Optics Express, Vol. 23, Issue 3, pp. 3186-3195, (DOI: 10.1364/OE.23.003186 ) 9 February 2015.
  11. C. Sabah, O. Turkmen-Kucuksari and G. Turhan-Sayan, “Metamaterial absorber-based sensor embedded into an X-band waveguide ,” Electronics Letters, Vol. 50, Issue 15, pp. 1074-1076, (DOI: 10.1049/el.2014.1753 ) 17 July 2014.
  12. O. Turkmen, G. Turhan-Sayan and R.W. Ziolkowski, “Single, Dual and Triple-Band Metamaterial-Inspired Electrically Small Planar Magnetic Dipole Antennas” Microwave and Optical Technology Letters, Vol. 56, No. 1, pp. 83-87, (DOI: 10.1002/mop.28059) January 2014.
  13. O. Turkmen, E. Ekmekci and G. Turhan-Sayan, “Effects of Using Different Boundary Conditions and Computational Domain Dimensions on Modeling and Simulations of Metamaterial Arrays in Microwave Frequencies,” International Journal of RF and Microwave Computer-Aided Engineering, Vol. 23, Issue 4, pp. 459-465, (DOI 10.1002/mmce.20734), July 2013.
  14. G. Turhan-Sayan and E. Ergin, “Non-Destructive Recognition of Dielectric Coated Conducting Objects by Using WD Type Time-Frequency Transformation and PCA Based Fusion,” International Journal of RF and Microwave Computer-Aided Engineering, Vol. 23, Issue 4, pp. 403-409, (DOI 10.1002/mmce.20726) July 2013.
  15. E. Ekmekci and G. Turhan-Sayan, “Multi-functional metamaterial sensor based on a broad-side coupled SRR topology with a multilayer substrate,” Applied Physics A-Materials Science & Processing, Vol. 110, Issue 1, pp. 189-197, January, 2013.
  16. O. Turkmen, E. Ekmekci and G. Turhan-Sayan, “Nested U-Ring Resonators: A Novel Multi-Band Metamaterial Design in Microwave Region,” IET Microwaves, Antennas and Propagation, Vol. 6, Issue 10, pp.1102–1108, 17 July 2012.
  17. O. Yurduseven, A. E. Yilmaz and G. Turhan-Sayan, “Hybrid-shaped single-loop resonator: a four-band metamaterial structure,” Electronics Letters, Vol.47, No.25, pp. 1381-1382, (DOI : 10.1049/el.2011.2995), December 2011.
  18. O. Yurduseven, A.E. Yilmaz and G. Turhan-Sayan, “Triangular-Shaped Single-Loop Resonator: A Triple-Band Metamaterial with MNG and ENG Regions in S/C Bands,” IEEE Antennas and Wireless Propagation Letters, Vol.10, pp. 701-704, (DOI: 10.1109/LAWP.2011.2161742), 25 July 2011.
  19. L. Şahin, K. Aydin, G. Turhan-Sayan and E. Özbay, “Enhanced transmission of electromagnetic waves through split-ring resonator shaped apertures,” Journal of Nanophotonics (JNP), Volume: 5, Article Number: 051812 , (DOI:10.1117/1.3599873), June 21, 2011.
  20. E. Ekmekci, A.C. Strikwerda, K. Fan, G. Keiser, X. Zhang, G. Turhan-Sayan and R.D. Averitt, “Frequency tunable Terahertz metamaterials using broadside coupled split-ring resonators,” Physical Review B, Vol.83, Issue 19, Article No. 193103, (DOI:10.1103PhysRevB.83.193103), May 19, 2011.
  21. E. Ekmekci and G. Turhan-Sayan, “Single Loop Resonator: Dual-Band Magnetic Metamaterial Structure,” Electronics Letters, Vol.46, No.5, pp. 324-325, March 2010.
  22. M. Secmen and G. Turhan-Sayan, “Radar Target Classification Method with Reduced Aspect Dependency and Improved Noise Performance Using Multiple Signal Classification Algorithm,” IET Radar, Sonar & Navigation, Vol. 3, Issue 6, pp. 583-595, December 2009.
  23. E. Ekmekci, K. Topalli, T. Akin and G. Turhan-Sayan, “A Tunable Multi-Band Metamaterial Design Using Micro-Split SRR Structures,” Optics Express, Vol.17, No.18, pp.16046-16058, July 2009.
  24. E. Ekmekci and G. Turhan-Sayan, “Comparative investigation of resonance characteristics and electrical size of the double-sided SRR, BC-SRR and conventional SRR type metamaterials for varying substrate parameters,” Progress In Electromagnetics Research B, Vol. 12, 35-62, January 2009.
  25. G. Turhan-Sayan, “Real Time Electromagnetic Target Classification Using a Novel Feature Extraction Technique with PCA-Based Fusion,” IEEE Transactions on Antennas and Propagation, Vol.53, No.2, pp.766-776, February 2005.
  26. G. Turhan-Sayan, ” Natural resonance-based feature extraction with reduced aspect sensitivity for electromagnetic target classification,” Pattern Recognition, Vol.36, No. 7, pp. 1449-1466, July 2003.
  27. S. K. Ozdemir and G. Turhan-Sayan, “Temperature effects on surface plasmon resonance: Design considerations for an optical temperature sensor,”  Journal of Lightwave Technology (IEEE/OSA publication), Vol.21, No.3, pp. 805-814, March 2003.
  28. G. Turhan-Sayan and M. Kuzuoglu, “Pole Estimation for Arbitrarily-Shaped Dielectric Targets by a Genetic Algorithm-Based Resonance Annihilation Technique,” Electronics Letters, Vol. 37, No. 6, pp.380-381, March 2001.
  29. G. Turhan-Sayan, K. Leblebicioğlu and T. İnce, “Electromagnetic Target Classification Using Time-Frequency Analysis and Neural Networks,” Microwave and Optical Technology Letters, Vol.21, No. 1, pp. 63-69, April 1999.
  30. G. Turhan-Sayan, K. Leblebicioğlu and S. İnan, “Input Signal Shaping for Target Identification Using Genetic Algorithms,” Microwave and Optical Technology Letters, Vol.17, No. 2, pp. 128-132, February 1998.
  31. G. Turhan-Sayan and A. K. Dominek, “Frequency Domain Mechanism Extraction,” IEEE Transactions on Antennas and Propagation, Vol. 34, No.10, pp. 1716-1719, October 1990.
  32. G. Turhan-Sayan and D. L. Moffatt, “K-Pulse Estimation Using Legendre Polynomial Expansions and Target Discrimination,” Journal of Electromagnetic Waves and Applications, Vol.4, No. 2, pp. 113-128, 1990.
  33. G. Turhan-Sayan and D. L. Moffatt, “K-Pulse Estimation and Target Identification of Low-Q Radar Targets,” Wave Motion, No. 11, pp. 453-461, 1989.

International Refereed Book Chapters

  1. G. Turhan-Sayan and S. Sayan, “Use of Time-Frequency Representations in the Analysis of Stock Market Data,” Chapter 22, pp.429-453 in Computational Methods in Decision-making, Economics and Finance edited by E. Kontoghiorghes, B. Rustem and S. Siokos, Kluwer Applied Optimization Series (Series Editors: P. Pardalos and D.W. Hearn), Kluwer Academic Publishers, 2002. (chapter in book)
  2. G. Turhan-Sayan, “Multi-Aspect Data Fusion Applied to Electromagnetic Target Classification Using Genetic Algorithms,” pp. 533-539 in Multisensor Fusion edited by A. K. Hyder, E. Shahbazian and E. Waltz, Kluwer Academic Publishers, 2002. (paper in book)
  3. G. Turhan-Sayan and D. L. Moffatt, “K-Pulse Estimation and Target Identification for Geometrically Complicated Low-Q Scatterers,” pp. 435-462 in Ultra-Wide Band Radar: Proceedings of the First Los Alamos Symposium, edited by B.W. Noel, CRC Press, 1991. (paper in book)

International Refereed Conference Paper

  1. S. Dinç, H. Elibol, R. Güneri, A. B. Özdöl, F. Şık, İ. T. Yeşilyurt , M. Dogan and G. Turhan-Sayan, “Detection and Microwave Imaging of Conducting Objects Buried Very Closely to the Air-Soil Boundary,” ICEAA-IEEE APWC  2019, Granada, Spain,  September 9-13, 2019.
  2. O. Yesilyurt and G. Turhan-Sayan, “Directivity Enhancehment of Antipodal Vivaldi Antenna using Broadband Metasurface Lens,” 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Atlanta, Georgia, 7-12 July 2019.
  3. S. Dinç, H. Elibol, R. Güneri, A. B. Özdöl, F. Şık, İ. T. Yeşilyurt , M. Dogan and G. Turhan-Sayan, “Detection and Recognition of Buried Conducting Objects Using Subsurface Microwave Images Constructed by Down-Looking GPR Measurements and by Energy-Based Target Features,” AES (Advanced Electromagnetics Symposium) 2019, Lisbon, Portugal, July 24-26, 2019.
  4. M. Dogan, O. Yesilyurt and G. Turhan-Sayan, “Inside-the-wall detection of objects with lowmetal content using the GPR sensor: effects of different wall structures on the detection performance,” SPIE Defense+Security and Commercial Sensing Symposium 2018,  Orlando, Florida, USA, 17-19 April 2018.
  5. M. Dogan and G. Turhan-Sayan, “Investigation of the Effects of Buried Object Orientation in Subsurface Detection by GPR,” The 7th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies, Xi’an, China, October 24-27, 2017.
  6. K. Üstün and G. Turhan-Sayan, “Wide Bandwidth Absorption in the MWIR Region using a Thin and Simple Metamaterial Absorber,” 4th International EMC Turkiye Conference (IEEE Sponsored), September 24-27, 2017, Ankara, Turkey.
  7. M. Dogan and G. Turhan-Sayan, “Through-The-Wall Target Detection using GPR A-Scan Data: Effects of Different Wall Structures on Detection Performance,” 4th International EMC Turkiye Conference (IEEE Sponsored), September 24-27, 2017, Ankara, Turkey.
  8. M. Dogan, S. Gümüş and G. Turhan-Sayan, “Detection of Conducting and Dielectric Objects Buried under a Layer of Asphalt or Concrete Using Simulated Ground Penetrating Radar Signals,” ICEAA/IEEE APWC Meeting, Verona, Italy, 11-15 September, 2017.
  9. M. Dogan and G. Turhan-Sayan, “Investigation of Simulated Ground Penetrating Radar Data for Buried Objects Using Quadratic Time-Frequency Transformations,” 2017 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting in San Diego, California, USA, July 7-14, 2017.
  10. S. Kocaman and G. Turhan Sayan, “Delay characteristics comparison of coherently coupled high-Q multi-cavity array and single embedded quantum dot cavity systems,” SPIE 2017 Photonics West OPTO, Conference: Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIV, San Francisco, CA, USA, Jan. 28-Feb. 2, 2017. (Published at Proc. SPIE 10114, Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIV, 101140Z on February 20, 2017, doi:10.1117/12.2250382.)
  11. K. Üstün and G. Turhan-Sayan, “Thin Wideband Infrared Metamaterial Absorber with Coplanar Metallic Patches of Different Sizes ,” presented at the 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (Metamaterials’ 2016) in Crete, Greece,  September 19– 22,  2016.
  12. M. Dogan and G. Turhan-Sayan, “Preprocessing of A-Scan GPR Based on Energy Features,” Conference #9823 “Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XXI” at the SPIE Defense+Security Symposium 2016,  Baltimore, Maryland, USA, 17-21 April 2016.
  13. P. Yasar Orten and G. Turhan-Sayan, “The Effect Of Periodicity Distance In Electric Field Direction On The Resonance Frequency By Using Equivalent Circuit Model And Simulation,” accepted for presentation in 2015 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Vancouver, British Columbia, Canada, July 19-25, 2015.
  14. B. Öner, K. Üstün, H. Kurt, A. K. Okyay and G. Turhan-Sayan, “Broadband One Way Propagation via Dielectric Waveguides with Unequal Effective Index,” 2014 IEEE Photonics Symposium, 14-16 October 2014, San Francisco, CA, USA.
  15. G. Turhan-Sayan and B. I. Barut, “Electromagnetic Signal Processing for Feature Extraction and Classification of Lossy Dielectric Targets,” 2013 Progress in Electromagnetics Research Symposium (PIERS), August 12-15 2013, Stockholm, Sweden.
  16. O. Turkmen, G. Turhan-Sayan and R.W. Ziolkowski, “Metamaterial Inspired, Electrically Small, GSM Antenna with Steerable Radiation Patterns and High Radiation Efficiency,” IEEE International AP-S/URSI Symposium, July 7-12 2013, Orlando, FL, USA.
  17. G. Turhan-Sayan and E. Ergin, “Non-Destructive Recognition of Dielectric Coated Conducting Objects by Using WD Type Time-Frequency Transformation and PCA Based Fusion,” 2012 International Mediterranean Microwave Symposium (MMS), September 2-5, 2012, Istanbul, Turkey.
  18. O. Turkmen, E. Ekmekci and G. Turhan-Sayan, “Effects of Using Different Boundary Conditions and Computational Domain Dimensions on Modeling and Simulations of Metamaterial Arrays in Microwave Frequencies,” 2012 International Mediterranean Microwave Symposium (MMS), September 2-5, 2012, Istanbul, Turkey.
  19. G. Turhan-Sayan and E. Ergin, “Electromagnetic Object Recognition for Dielectric Coated Conductors Based on WD-PCA Type Fused Feature Extraction,” 2012 Progress in Electromagnetics Research Symposium (PIERS), pp.212-215, August 19-23 2012, Moscow, Russia.
  20. O. Turkmen and G. Turhan-Sayan, “Effects of Having Dense Metamaterial Arrays on the Retrieved Parameter Results for Permittivity and Permeability,” IEEE International AP-S/URSI Symposium, July 8-14 2012, Chicago, IL, USA.
  21. O. Yurduseven, A. E. Yilmaz and G. Turhan-Sayan, “A Compact Five-Band SLR Type Metamaterial,” EuCAP 2012 6th European Conference on Antennas and Propagation, March 26-30 2012, art. No. 6206040, pp. 2865-2867, Prague, Czech Republic.
  22. E. Ekmekci, A. C. Strikwerda, K. Fan, G. R. Keiser, X. Zhang, G. Turhan-Sayan and R. D. Averitt, “Frequency Tunable Metamaterial Designs Using Near-Field Coupled SRR Structures in the Terahertz Region,” IRMMW-THz 2011 – 36th International Conference on Infrared, Millimeter, and Terahertz Waves, art. no. 6104838.
  23. E. Ekmekci, A. C. Strikwerda, K. Fan, G. R. Keiser, X. Zhang, G. Turhan-Sayan and R. D. Averitt, “Frequency Tunable Metamaterial Designs Using Near-Field Coupled SRR Structures in the Terahertz Region,” 2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011 , art. no. 5951064.
  24. O. Turkmen, E. Ekmekçi and G.  Turhan-Sayan, “Miniaturization of U-Shaped Multi-Band Metamaterial Structures,” URSI GASS 2011, August 2011, Istanbul,Turkey.
  25. O. Turkmen, E. Ekmekçi and G.  Turhan-Sayan, “Parametric investigation of a new multi-band metamaterial design: U-shaped multiple ring magnetic resonators,” IEEE International Symposium on Antennas and Propagation, July 3-8 2011, Spokane, Washington, USA.
  26. E. Ekmekçi and G. Turhan-Sayan, “Metamaterial Sensor Applications Based on Broadside-Coupled SRR and V-Shaped Resonator Structures,” IEEE International Symposium on Antennas and Propagation, July 3-8 2011, Spokane, Washington, USA.
  27. E. Ekmekci, A. C. Strikwerda, K. Fan, G. R. Keiser, X. Zhang, G. Turhan-Sayan and R. D. Averitt, “Frequency Tunable Metamaterial Designs Using Near-Field Coupled SRR Structures in the Terahertz Region,” CLEO: Science and Innovations, May, 2011, Baltimore, MD, USA.
  28. O. Turkmen, E. Ekmekçi and G.  Turhan-Sayan, “A new Multi-Ring SRR Type Metamaterial Design with Multiple Magnetic Resonances,” 29th PIERS 2011 in Marrakesh, MOROCCO, March 20-23, 2011.
  29. G. Turhan-Sayan, T. T. Katılmış and E.S. Sayan, “Target Recognition by Self-Organizing Map Type Unsupervised Clustering Using Electromagnetic Scattered Signals in Resonance Region,” 10th Mediterranean Microwave Symposium MMS’2010, Güzelyurt, Northern Cyprus, 25-27 August 2010.
  30. E. Ekmekçi and G. Turhan-Sayan, “Use of SRR Based Super-Cells to Obtain Multiple Resonances and Broader Frequency Bands with Negative Effective Permeability,” IEEE International Symposium on Antennas and Propagation, July 11-17 2010, Toronto, ON, Canada.
  31. M. Seçmen and G. Turhan-Sayan, “An Electromagnetic Target Classification Method for the Target Sets with Alien Target: Application to Small-Scale Aircraft Targets,” PIERS 2010 in Cambridge, MA, USA, July 5-8, 2010, published in  PIERS Online, vol. 6, no. 5, pp. 425-429, 2010.
  32. P. Yaşar-Örten, E. Ekmekçi and G. Turhan-Sayan, “Equivalent Circuit Models for Split Ring Resonator Arrays,” PIERS 2010 in Cambridge, MA, USA, July 5-8, 2010.
  33. T. Katılmış, E.Ekmekçi and G. Turhan-Sayan, “Unsupervised Electromagnetic Target Classification by Self-Organizing Map Type Clustering,” PIERS 2010 in Cambridge, MA, USA, July 5-8, 2010.
  34. E. Ekmekçi, R. D. Averitt and G. Turhan-Sayan, “Effects of Substrate Parameters on the Resonance Frequency of Double-Sided SRR Structures Under Two Different Excitations,” PIERS 2010 in Cambridge, MA, USA, July 5-8, 2010.
  35. E. Ergin and G. Turhan-Sayan, “Noise Performances of Two Recently Reported Electromagnetic Target Classification Techniques in Resonance Region: A Comparative Study for the WD-PCA Based Classifier and the MUSIC Algorithm Based Classifier,” PIERS 2009 in Moscow, Russia, August 18-21, 2009.
  36. E. Ekmekçi and G. Turhan-Sayan, “A Novel Dual-band Metamaterial Structure,” PIERS 2009 in Moscow, Russia, August 18-21, 2009.
  37. E. Ekmekçi, K. Topalli, T. Akin and G. Turhan-Sayan, “Effects of Array Dimensions on the Resonance Characteristics of SRR Type Metamaterial Arrays with Small Sizes: Simulations and Experiments,” PIERS 2009 in Moscow, Russia, August 18-21, 2009.
  38. E. Ekmekçi, K. Topalli, T. Akin and G. Turhan-Sayan, “A Feasibility Study for Tunable Metamaterial Design Using Multi-Split SRR Structures and RF-MEMS Switching,” IEEE International Symposium on Antennas and Propagation, June 1-5 2009, Charleston, SC, USA.
  39. M. Secmen, E. Ekmekçi, G. Turhan-Sayan, “A Resonance Region Method for Recognition of Multiple Targets Using the MUSIC Algorithm and a Time Correlation Technique,” IEEE International Symposium on Antennas and Propagation, July 2008, San Diego, CA, USA.
  40. E. Ekmekçi, G. Turhan-Sayan, “Reducing the Electrical Size of Magnetic Metamaterial Resonators by Geometrical Modifications: A Comparative Study for Single-Sided and Double-Sided Multiple SRR, Spiral and U-Spiral Resonators,” IEEE International Symposium on Antennas and Propagation, July 2008, San Diego, CA, USA.
  41. M. Secmen, G. Turhan-Sayan, A. Hizal, “A radar target recognition method with MUSIC algorithm: Application to aircraft targets with measured scattered data,” IEEE Radar Conference 2008, Rome, Italy, May 2008.
  42. E. Ekmekçi, G. Turhan-Sayan, “Sensitivity of the Resonance Characteristics of SRR and DSRR (Double-Sided SRR) Type Metamaterials to the Changes in Substrate Parameters and the Usefulness of DSRR Structure for Reduced Electrical Size”, The 24th PIERS 2008 in Cambridge, July 2008, Cambridge, USA.
  43. E. Ekmekçi, G. Turhan-Sayan, “Investigation of Permittivity and Permeability for a Novel V-Shaped Metamaterial Using Simulated S-Parameters”, 5th International Conference on Electrical and Electronics Engineering, December 2007, Bursa, Turkey.
  44. M. Secmen, G. Turhan-Sayan, “The MUSIC algorithm-based electromagnetic target classification for isolated targets from incomplete frequency domain data,” 2007 Antennas and Propagation Symposium, pp. 4601-4604, Honolulu, Hawai, USA, June 2007.
  45. M. Secmen and G. Turhan-Sayan, “A novel electromagnetic target recognition method by MUSIC algorithm,” 2006 IEEE AP-S International Symposium, pp. 1299-1302, July 2006, Albuquerque, New Mexico, USA.
  46. G. Turhan-Sayan and E. Ekmekçi, “Target Pole Extraction from Transient Scattered Electromagnetic Data Using the Page and Wigner Distributions,” Mediterranean Microwave Symposium 2006, pp.129-132, September 2006, Genoa, Italy.
  47. M. Secmen and G. Turhan-Sayan, “A Novel Method for Electromagnetic Target Classification using the MUSIC Algorithm: Applied to Small-Scale Aircraft Targets,” presented in EUropean Conference on Antennas and Propagation (EUCAP 2006), November 2006, Nice, France.
  48. O. Ersoy and G. Turhan-Sayan, ” Electromagnetic Target Classification of Small-Scale Aircraft Modeled by Conducting Wire Structures Using a Natural Resonance Based Feature Extraction Technique,” 2005 IEEE AP-S/URSI Symposium, Washington D.C., USA, July 3-8, 2005.
  49. G. Turhan-Sayan and M. Ayar, “Application of a Natural-Response Based Electromagnetic Target Recognition Technique to Dielectric Coated Conductors,” 2005 IEEE AP-S/URSI Symposium, Washington D.C., USA, July 3-8, 2005.
  50. S. Sayan and G. Turhan-Sayan, “Time Series Filtering through Chebyshev Polynomials,” The Society for Computational Economics, 10th International Conference on Computing in Economics and Finance, Abstract Book, pp:86, Univ. Of Amsterdam, The Netherlands, July 8-10, 2004. Conference proceedings, pp.86.
  51. G. Turhan-Sayan,” Investigation of Using Linear and Quadratic Time-Frequency Representations for Electromagnetic Feature Extraction with Reduced Aspect Sensitivity,” 2003 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, Columbus, Ohio, USA. AP Proceedings, pp.243-246.
  52. G. Turhan-Sayan and M. Karaduman, “Use of PCA and Quadratic TFR Techniques in Electromagnetic Target Classification from Scattered Data,” 2001 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 2001, Boston, Massachusetts, USA. URSI proceedings, pp.104.
  53. G. Turhan-Sayan and S. Sayan, “A Comparative Evaluation of the Performance of Different Filtering Techniques in Business Cycle Identification,” 2001 SCE (Society of Computational Economics) Conference at Yale University, New Haven, CT, USA, June 2001.
  54. G. Turhan-Sayan, “Use of Time-Frequency Distributions and Genetic Algorithms in Electromagnetic Target Feature Extraction and K-Pulse Shaping,” 2000 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 2000, Salt Lake City, Utah, USA. URSI proceedings, pp. 38.
  55. G. Turhan-Sayan and T. İnce, “Neural Network techniques in Electromagnetic Target Classification: A Comparison Study,” 1999 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 1999, Orlando, Florida, USA. AP proceedings, Vol.3, pp. 2222-2225.
  56. G. Turhan-Sayan, M. Kuzuoğlu and D. L. Moffatt, “Investigation of the K-Pulse Concept as Applied to Dielectric Coated Conducting Targets,” 1999 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 1999, Orlando, Florida, USA. URSI proceedings, pp.353.
  57. G. Turhan-Sayan, “Investigation of Bandwidth Effects in Natural Resonance Based Target Recognition,” 1998 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, June 1998, Atlanta, Georgia, USA. URSI Proceedings, pp. 329.
  58. G. Turhan-Sayan, S. İnan, T. İnce and K. Leblebicioğlu, “Applications of Artificial Neural Networks and Genetic Algorithms to Electromagnetic Target Classification,” NATO-RTO, SCI Panel Meeting on the Applications of Information Technologies to Mission Systems, April 1998, Monterey, CA, USA. Conference Proceedings, pp. 23 / 1-10.
  59. G. Turhan-Sayan and K. Leblebicioğlu, “Electromagnetic Target Classification by Self-Organizing Maps,” 1997 International Conference on Engineering Applications of Neural Networks, June 1997, Stockholm, Sweden, Conference proceedings, pp. 295-298.
  60. G. Turhan-Sayan, K. Leblebicioğlu and S. İnan, “The Use of Genetic Algorithms in Input Signal Shaping for Target Identification,” 1996 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 1996, Baltimore, MD, USA. URSI abstract proceedings, pp. 21.
  61. T. Ince, K. Leblebicioğlu and G. Turhan-Sayan, “Target Identification by a Time-Frequency Analysis,” 1996 IEEE AP-S International Symposium and UNSC/URSI National Radio Science Meeting, July 1996, Baltimore, MD, USA. URSI abstract proceedings, pp. 20.
  62. G. Turhan-Sayan, K. Leblebicioğlu and S. İnan, “A Modified Approach in Input Waveform Shaping for Target Identification,” 1995 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1995, Newport Beach, California, USA.
  63. G. Turhan-Sayan and S. K. Ozdemir,”Optical Temperature Sensor Using Surface Plasmon Resonance Technique,” 1995 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1995, Newport Beach, California, USA.
  64. G. Turhan-Sayan,”Target Discrimination Based on K-Pulse Technique Using Narrow-Band Data,” 1994 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1994, Seattle, Washington, USA. URSI proceedings, pp. 262.
  65. G. Turhan-Sayan and K. Leblebicioğlu,”Use of Wavelets and Chebyshev Polynomials in K-Pulse Synthesis and Target Identification,” 1993 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1993, Ann Arbor, Michigan, USA. URSI abstract proceedings, pp. 236.
  66. A. Boiarski, R.W.Ridgway, J.R. Busch, G.Turhan-Sayan and L.S. Miller,”Integrated Optic Biosensor for Environmental Monitoring,” 1991 SPIE – The International Society for Optical Engineering, Conference on OE/Fibers, 1587 Chemical, Biochemical and Environmental Fiber Sensors III, Boston, Massachussetts, USA, September 4, 1991. (The full paper is later -in 1992- published in  CHEMICAL, BIOCHEMICAL, AND ENVIRONMENTAL FIBER SENSORS III  Book Series: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)   Vol. 1587, pp. 114-128, 1992 (DOI: 10.1117/12.56539)
  67. A. Boiarski, V.D. McGinniss and G. Turhan-Sayan, “High Spatial Resolution Distributed Fiber Optic Temperature Sensor,” in OPTOELECTRONIC DEVICES AND APPLICATIONS  Book Series: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)   Volume: 1338   Pages: 18-30, 1990 (DOI: 10.1117/12.22973).
  68. G. Turhan-Sayan and D. L. Moffatt, “K-Pulse Estimation for an Aircraft from Full-Scale Radar Data,” 1989 PIERS (Progress in Electromagnetic Research Symposýum) in Boston, Massachussetts, USA.
  69. G. Turhan-Sayan and D. L. Moffatt, “Substructure Related K-Pulse Estimation for an Aircraft from Full-Scale Data,” 1989 IEEE AP-S International Symposium and URSI National Radio Science Meeting, June 1989, San Jose, California, USA. URSI abstract proceedings, pp.314.
  70. G. Turhan and D. L. Moffatt, “Estimation of the K-Pulse and Natural Resonance Frequencies Using Legendre Polynomial Expansions,” 1988 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1988, Syracuse, NewYork, USA. URSI abstract proceedings, pp.8.
  71. G. Turhan, “Target Identification Using the K-Pulse Technique,” 1988 Ohio State University, Council of Graduate Students Forum, April 1988, Columbus, Ohio, USA (The full paper is published in the forum proceedings, pp. 59-67 as the award winning paper.)
  72. G. Turhan and D. L. Moffatt, “K-Pulse Synthesis for Complex Target Geometries Using Incomplete Frequency Data,” 1987 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1987, Blacksburg, Virginia, USA. URSI abstract proceedings, pp.231.
  73. G. Turhan and D. L. Moffatt, “Expansion of K-Pulse in Terms of Legendre Polynomials for an Arbitrary Target,” 1986 IEEE AP-S International Symposium and UNSC/URSI Radio Science Meeting, June 1986, Philadelphia, Pennsylvania, USA. URSI abstract proceedings, pp.134.

National Refereed Conference Papers

  1. N. Karacan, G. Turhan-Sayan ve E. Ekmekçi, “Farklı Dielektrik Rezonatör Geometrilerine Sahip Tamamı Dielektrik Soğurucu Yüzey Yapıları İçin Hassasiyet Analizleri / Sensitivity Analyses for All-Dielectric Absorber Structures Having Different Dielectric Resonator Geometries,” ELECO 2022
    ELEKTRİK–ELEKTRONİK ve BİYOMEDİKAL MÜHENDİSLİĞİ KONFERANSI, Bursa, 24–26 Kasım 2022, Çevrimiçi Konferans: www.eleco.org.tr     .
  2. M. Doğan ve G. Turhan-Sayan, “Through-the-wall target detection by energy features extracted from simulated ultra wideband radar signals,” Sinyal İşleme ve Uygulamaları Kurultayı (SIU) 2017, Antalya, Mayıs 2017.
  3. K. Üstün ve G. Turhan-Sayan, “Kızılötesi Bantlarda İnce Metamalzeme Sönümleyici Tasarımı,” URSI-TÜRKİYE’2016 VIII. Bilimsel Kongresi, Ankara, 1-3 Eylül 2016.  Öğrenci Bildirileri Yarışması Üçüncülük Ödülü.
  4. M. Doğan, A. A. Dursun, S. Gümüş, T. Aydın, Y. E. Koç ve G. Turhan-Sayan, “Yeraltı Radar Verilerinden Enerji Tabanlı Ön İşleme ve Hedef Tespiti,” URSI-TÜRKİYE’2016 VIII. Bilimsel Kongresi, Ankara, 1-3 Eylül 2016. 
  5. S. Can, A. E. Yılmaz ve G. Turhan-Sayan, “Altıgen Şekilli Ayrık Halka Mikrodalga Rezonatör Yapılarının İncelenmesi,” URSI-TÜRKİYE’2014 VII. Bilimsel Kongresi, Elazığ, 28-30 Ağustos 2014.
  6. Ö. Türkmen-Küçüksarı ve G. Turhan-Sayan, “İç İçe Geçmiş Çok Halkalı Çok Bandlı Metamalzeme Rezonatörleri,” URSI-TÜRKİYE’2014 VII. Bilimsel Kongresi, Elazığ, 28-30 Ağustos 2014.
  7. G. Turhan-Sayan, “Metamalzemelerin Mikrodalga ve Terahertz Frekans Bantlarındaki Uygulamaları,” SAVTEK 2014, Ankara, 26 Haziran 2014.
  8. E. Ekmekçi ve G. Turhan-Sayan, “Metamalzeme Etkin Ortam Parametrelerinin Doğrulanması İçin Yeni Bir Yöntem,” IEEE 19. Sinyal İşleme ve Uygulamaları Kurultayı (SIU 2011), Kemer, Antalya, 20-22 Nisan, 2011.
  9. G. Turhan-Sayan, “ Rezonans Frekans Bölgesinde Ölçülen Geniş Bantlı Elektromanyetik Saçınım Verilerinden Hedef Tanıma Yöntemleri,” 5.URSI-Türkiye 2010 Bilimsel Kongresi (Davetli Konuşma), ODTÜ-Kuzey Kıbrıs Kampusu, KKTC, 25-27 Ağustos 2010.
  10. E. Ekmekçi ve G.  Turhan-Sayan, “Ayrık Halkalı Rezonatörlerden Oluşan Metamateryal Dizi Yapılarının Deneysel Olarak İncelenmesi,” Sinyal İşleme ve Uygulamaları Kurultayı (SIU) 2009, Side, Antalya, Nisan 2009.
  11. M. Seçmen, G. Turhan-Sayan, “Çoklu hedefler için doğal rezonans tabanlı bir elektromanyetik hedef tanıma yönteminin teorisi ve uygulaması,” Sinyal İşleme ve Uygulamaları Kurultayı (SIU) 2008, Didim, Aydın, 19-22 Nisan 2008.
  12. E. Ekmekçi ve G. Turhan-Sayan, “Ayrık Halkalı Rezonatör Yapının Çiftli Ayrık Halkalı Yapı İle Gerçekleştirilip Rezonans Frekansının Düşürülmesi”, 15.Yıl Mühendislik-Mimarlık Kongresi, November 2007, Isparta, Turkey.
  13. E. Ekmekçi ve G. Turhan-Sayan, “V-Şekilli Rezonatör ve İletken Çubuklar Kullanarak Oluşturulan Sol-Elli Yapının Benzetimi, Etkin Ortam Parametrelerinin Çıkartılması ve Rezonans Frekansının Kaydırılması”, Elektrik Elektronik Bilgisayar Biyomedikal Mühendisliği 12. Ulusal Kongre ve Fuarı, November 2007, Eskişehir, Turkey.
  14. E. Ekmekçi ve G. Turhan-Sayan, “V-Şekilli Yapılarla Yeni Bir Manyetik Rezonatör Uygulaması ve Simülasyonu”, IEEE 15. Sinyal İşleme ve İletişim Uygulamaları Kurultayı (SIU), June 2007, Eskişehir, Turkey.
  15. M. Seçmen, E. Ekmekçi ve G. Turhan-Sayan, “Kaynaştırılmış MUSIC Tayf Matrisleri ile Elektromanyetik Hedef Tanıma Yönteminin Eksik Frekans Verilerine Uygulanması ve Performans Analizi”, IEEE 15. Sinyal İşleme ve İletişim Uygulamaları Kurultayı, June 2007, Eskişehir, Turkey.
  16. M. Seçmen, G. Turhan-Sayan, “MUSIC Algoritması ile Yeni Bir Elektromanyetik Hedef Sınıflandırma Yöntemi,” 14. Sinyal İşleme ve Uygulamaları Kurultayı (SIU), p. 1-4, Nisan 2006, Antalya, Türkiye.
  17. M. Seçmen, G. Turhan-Sayan, “MUSIC Algoritması ve Öznitelik Kaynaştırma Teknikleri Kullanılarak Açı Değişimlerine ve Gürültüye Duyarlılığı Azaltılmış Yeni Bir Elektromanyetik Hedef Sınıflandırıcı,” URSI-Türkiye 3. Bilimsel Kongresi, p. 583‑585, Eylül 2006, Ankara, Türkiye.
  18. G. Turhan-Sayan, E. Ekmekçi, “Geç-zamanlı Elektromanyetik Saçınım Verilerinden Page ve Wigner Dağılımları Kullanarak Hedef Sistem Kutuplarının Çıkarımı,” URSI-Türkiye 3. Bilimsel Kongresi, p. 61‑63, Eylül 2006, Ankara, Türkiye.
  19. O. Ersoy ve G. Turhan-Sayan, “İletken Tel Yapılarla Modellenmiş Uçakların Elektromanyetik Doğal Rezonanslara Dayalı Bir Öznitelik Çıkarım Tekniği İle Sınıflandırılması,” SIU 2005, May 2005, Kayseri, TURKEY.
  20. M. Seçmen, G. Turhan-Sayan ve A. Hızal, “Hedef Tanıma Amacı İle Page Dağılımı Kullanarak Elektromanyetik Saçılım Sinyallerinden Kutup Çıkarımı,” SIU 2005, May 2005, Kayseri, TURKEY.
  21. M. Seçmen, G. Turhan-Sayan ve A. Hızal, “Hedef Tanıma İçin Sinyal İşleme Yöntemleri ile Bant Geçirici Elektromanyetik Geri Yansıma Ölçüm Analizi,” URSI-Türkiye’2004 İkinci Ulusal Kongresi, Bildiriler Kitabı sayfa: 303-305, Bilkent Üniversitesi, Ankara, 8-10 Eylül 2004.
  22. Erdoğan, U. Halıcı, K. Leblebicioğlu, V.Atalay ve G. Turhan-Sayan,”Darbeli Doppler Radarlarda Yansıma Sinyali Analizi ve Hedef Sınıflandırma İçin Öznitelik Çıkarımı,” SİU’ 98, 6. Sinyal İşleme ve Uygulamaları Kurultayı, Kızılcahamam, Ankara, sf. 271-276, Mayıs 1998.
  23. G. Turhan-Sayan,”Hedef Sınıflandırma Probleminde Doğal Salınım Yok Etme Tekniğinin Kullanılması,” Savunma Sanayiindeki Teknolojik Gelişmeler Sempozyumu, Bildiriler Kitabı, Cilt II, sf. 1341-1348, Kara Harp Okulu, Ankara, 5-6 Haziran 1997.
  24. K. Leblebicioğlu ve G. Turhan-Sayan,”Zaman-Frekans Transformasyonları ve Yapay Sinir Ağlarının Hedef Tanıma Sistemlerine Uygulanması,” Savunma Sanayiindeki Teknolojik Gelişmeler Sempozyumu, Bildiriler Kitabı, Cilt II, sf. 1371-1378, Kara Harp Okulu, Ankara, 5-6 Haziran 1997.
  25. G. Turhan, A. Atalar and C. Toker,”Computer Aided Design and Construction of Small-Signal Broad-Band Microwave Transistor Amplifiers,” 2nd Symposium on Antennas, Propagation, Microwaves and Electromagnetics, METU Symposium Proceedings, sf. 264-279, Ankara, October 1983.

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