Timor Melamed

Associate Professor

 

School of Electrical & Computer Engineering
Ben-Gurion University of the Negev
Beer-Sheva 84105
Israel

 08-6461537   (Office)
 08-6472949   (Fax)
 

 
Timor Melamed was born is Tel-Aviv, Israel.  He received the B.Sc. degree magna cum laude in Electrical Engineering in 1989 and the Ph.D. Degree in 1996, both from Tel-Aviv University. From 1996 to 1998 he held a postdoctoral position at the department of Aerospace and Mechanical Engineering, Boston University. From 1998 to 2001 he was with Odin Medical Technologies. Currently he is with the School of Electrical & Computer Engineering, Ben-Gurion University of the Negev.

 

Research Interests. 1

List of Publications. 1

Articles. 2

Book Chapters 3

Conference Proceedings. 3

Courses. 4

Personal

Research Interests

  • Electromagnetic / acoustical modeling in the time-domain;
  • Analytic techniques in wave theory;
  •  High-frequency / short-pulse asymptotics;
  • Wave-oriented signal processing;
  • Localized propagation in dispersive and anisotropic media;
  • Time-domain inverse scattering.

List of Publications

Articles

 1) E. Heyman and T. Melamed, “Certain considerations in aperture synthesis of ultra-wideband / short-pulse radiation,” IEEE Trans. Ant. Propagat., AP-42, No. 4, pp. 518-525 April 1994.

 2) T. Melamed, Y. Ehrlich and E. Heyman, “Short pulse inversion of inhomogeneous media: A transient plane-wave approach,” Inverse Problems, Vol. 12, No. 6, pp. 977--993, 1997.

 3) T. Melamed and E. Heyman, “Spectral analysis of time-domain diffraction tomography,” invited paper for the special issue of Radio Science on the URSI 1995 Electromagnetic Theory Symposium, Vol. 32, No. 2, pp. 593--604, 1997.

 4) T. Melamed, “Phase space beam summation: A local spectrum representation for time dependent radiation from extended apertures, J. Electromagn. Waves Appl., 11:739--773, 1997.

 5) T. Melamed and L.B. Felsen, “Pulsed beam propagation in lossless dispersive media, Part I: Theory", J. Opt. Soc. Am. A feature issue on Mathematics and Modeling in Modern Optics, 15:1268-1276, May 98.

 6)  T. Melamed and L.B. Felsen, “Pulsed beam propagation in lossless dispersive media, Part II: A numerical example", J. Opt. Soc. Am. A feature issue on Mathematics and Modeling in Modern Optics, 15:1277-1284, May 98.

 7) T. Melamed, E. Heyman and L.B. Felsen, “Local spectral analysis of short-pulse-excited scattering from weakly inhomogeneous media: Part I--Forward Scattering, IEEE Trans. Ant. Propagat., Vol. 47, 7:1208-1217, July 99.

 8) T. Melamed, E. Heyman and L.B. Felsen, “Local spectral analysis of short-pulse-excited scattering from weakly inhomogeneous media: Part II--Inverse Scattering, IEEE Trans. Ant. Propagat., Vol. 47, 7:1218-1227, July 99.

 9) T. Melamed and L.B. Felsen, “Pulsed beam propagation in lossless dispersive media,'' in Ultra-Wideband, Short-pulse Electromagnetics 4, E. Heyman, J. Shiloh and B. Mandelbaum, eds., Plenum Press, NY, pp. 277-288, 1999.

10) T. Melamed and L.B. Felsen, “Pulsed beam propagation in dispersive media via pulsed plane wave spectra decomposition, IEEE Trans. Ant. Propagat., Vol. 48, No. 6, pp. 901--908, June 2000.

11) D. Censor and T. Melamed, “Volterra Differential Constitutive Operators and Locality Considerations in Electromagnetic Theory”, in Progress in Electromagnetics Research, PIER 36, 121-137, 2002.

12) T. Melamed, “On localization aspects of frequency-domain scattering from low contrast objects”, Antennas and Wireless Propagation Letters, Vol. 2, pp. 40-42, 2003.

13) I. Tinkelman and T. Melamed, “Gaussian Beam Propagation in Generic Anisotropic Wavenumber Profiles”, Optic Letters, Vol. 28, No. 16, pp. 1081-1083, July 2003.

14) T. Melamed, “Phase-space Green’s functions for modeling time-harmonic scattering from smooth inhomogeneous objects”, J. Math. Phys., Vol. 45, No. 6, pp. 2232-2247, July 2004.

15) I. Tinkelman  and  T. Melamed, “Local spectrum analysis of field propagation in anisotropic media , Part I  - Time-harmonic fields,”  J. Opt. Soc. Am. A., Vol. 22, No. 6, pp. 1200-1207, 2005.

16) I. Tinkelman  and  T. Melamed, “Local spectrum analysis of field propagation in anisotropic media, Part II – Time-dependent fields,” J. Opt. Soc. Am. A., Vol. 22, No. 6, pp. 1208-1215, 2005.

17) T. Melamed, “Time-domain phase-space Green's functions for inhomogeneous media”, Ultra-Wideband, Short-Pulse Electromagnetics 6, pp. 56-63, 2007.

18) T. Melamed, “Exact Beam Expansion of Time-harmonic Electromagnetic Waves,” J. Electromag. Waves Appl., Vol. 28, pp. 975–986, 2009.

19) Y. Hadad and T. Melamed, “Non-orthogonal Domain Parabolic Equation and Its Tilted Gaussian Beam Solutions," IEEE Trans. Ant. Propagat., Vol. 58, 2010.

20) Y. Hadad and T. Melamed, “Parametrization of Tilted Gaussian Beam Waveobjetcts,” Progress in Electromagnetics Research, PIER 102, pp. 65-80, 2010.

21) Y. Hadad and T. Melamed, “Tilted Gaussian beam propagation in inhomogeneous media.”  J. Opt. Soc. Am. A., Vol. 27, pp. 1840-1850, 2010.

22) T. Danov and T. Melamed, “Spectral Analysis of Relativistic Dyadic Green's Function of Moving Dielectric Medium.” IEEE Trans. Ant. Propagat., Vol.59, pp. 2973-2979, 2011.

23) T. Melamed, “TE and TM Beam Decomposition of Time-harmonic Electromagnetic Waves,” J. Opt. Soc. Am. A. Vol.  28, pp. 401-409, 2011

24) T. Melamed, “Pulsed Beam Expansion of Electromagnetic Aperture Fields,” Progress in Electromagnetics Research, PIER 114, pp. 317-332, 2011.

25) Y. Hadad and T. Melamed, “Time-dependent Tilted Pulsed Beams and Their Properties.” IEEE Trans. Ant. Propagat., Vol. 59, pp. 3855-3862, 2011.

26) T. Danov and T. Melamed, “2D Relativistic longitudinal Green's function in the presence of a moving planar dielectric-magnetic discontinuity,” J. Opt. Soc. Am. A.,Vol. 29, pp. 285-294, 2011.

27) T. Danov and T. Melamed, “A simple and direct time domain derivation of the dyadic Green's function for a uniformly moving non-dispersive dielectric-magnetic medium,” IEEE Trans. Ant. Propagat., Vol. 60, 2594-2597, 2012.

28) T. Melamed, D. Abuhasira and D. Dayan, “TE and TM  pulsed beam decomposition of time-dependent aperture fields,”  J. Opt. Soc. Am. A., Vol. 29, 1115-1123, 2012.

29) T. Melamed and A. Shlivinski, “Practical Algorithm for Custom Made Caustic Beams,” Optic Letters, Vol. 42, No. 13, 2499-2502, July  2017.

30) R. Tuvi and T. Melamed, “Asymptotic Analysis of Plane Wave Scattering by a Fast Moving PEC Wedge,”  IEEE Trans. Ant. Propagat, Vol. 65, No. 7, 3638-3644, July 2017.

31) T. Danov and T. Melamed, “STT analysis of the Time-dependent Reflected field from a Moving Dielectric-Magnetic Planar Discontinuity,” IEEE Trans. Ant. Propagat, v. 65, n. 10, pp. 5238-44, 2017.

32) T. Melamed and T. Danov, “Time Dependent Plane Wave Spectral Analysis of the Dyadic Green's Function of a Fast Moving Dielectric-Magnetic Medium,” J. Electromag. Waves Appl., Vol. 32, 2018

33) E. Mizrahi and T. Melamed, "Plane Wave Scattering by a Fast Moving PEC Circular Cylinder”, IEEE Trans. Ant. Propagat, Vol. 66, pp. 3623-3630, 2018.

34) R. Tuvi, E. Heyman and T. Melamed, “Beam Frame Representation for Ultrawideband Radiation from Volume Source Distributions: Frequency-Domain and Time-Domain Formulations” IEEE Trans. Ant. Propagat, Vol. 67, pp. 1010-1024, 2019.

35) R. Tuvi and T. Melamed, “Astigmatic Gaussian Beam Scattering by a PEC Wedge,” IEEE Trans.  Ant. Propagat, Vol. 67, pp. 7014-7021, 2019.

36) R. Tuvi, E. Heyman and T. Melamed, “UWB Beam-based Local Diffraction Tomography. Part I: Phase-space Processing and Physical Interpretation,” IEEE Trans. Ant. Propagat, Vol., 68, pp. 7144-7157 , 2019.

37) R. Tuvi, E. Heyman and T. Melamed, “UWB Beam-based Local Diffraction Tomography. Part II: The Inverse Problem,” IEEE Trans. Ant. Propagat, Vol., 68, pp. 7158-7169, 2019.

38) G. Lasry, T. Melamed and Y. Brick, “Manipulation and Control of 3-D Caustic Beams Over an Arbitrary Trajectory,” Optics Express, Vol. 28, 2020.

39) T. Melamed, “Pulsed Three-dimensional Planar Caustic Beams,” Accepted to IEEE Antennas and Wireless Propagation Letters.

 

Book Chapters

1)         E. Heyman and T. Melamed, “Space-time representation of ultra wideband signals,'' in Advances In Imaging and Electron Physics, Peter Hawkes, ed., Academic Press, 1998.

2)         R. Tuvi, E. Heyman and T. Melamed, “Beam-Based Local Diffraction Tomography,” in Advances in Mathematical Methods for Electromagnetics (Electromagnetics and Radar), K. Kobayashi and P.D. Smith, eds., Institution of Engineering and Technology, 2018.

 

Conference Proceedings

1)       T. Melamed and E. Heyman, “Local time-domain inverse scattering using pulsed-beams, Proc. of URSI Trianum International Symposium on Electromagnetic Theory, St. Petersburg, Russia, pp. 157--159, May 1995.

2)       T. Melamed and E. Heyman, “Local time-domain inverse scattering using pulsed-beams, URSI Proceedings of the 1995 International Symposium on Electromagnetic Theory, pp. 157--159, 1995 (the paper has been selected to appear in the special issue of Radio Science devoted to this symposium).

3)       T. Melamed and E. Heyman, “Short pulse inversion of inhomogeneous media: A local spectral analysis in the time-domain”, Proc. of the 18th Conference of IEEE in Israel,  pp. 2.4.6 (1-5), March 1995.

4)       T. Melamed and L.B. Felsen, “Pulsed beam propagation in dispersive media, Proc. of the 5th International Symposium on Antennas, Propagation, and EM Theory (ISAPE2000), Beijing, China, August, 2000.

5)       T. Melamed, “Localized Asymptotic Born Approximation – On-route Towards Large Scale Inverse Scattering,” XXVIIth URSI General Assembly, Maastricht, The Netherlands, August 2002

6)       I. Tinkelman and T. Melamed, “Pulsed Beam Propagation in Dispersive Anisotropic Media,” The 22nd convention of IEEE Israel section, Tel-Aviv, Israel, December 2002.

7)       T. Melamed, “Localized Asymptotic Born Approximation – On-route Towards Large Scale Inverse Scattering,” Proc. of the 22nd convention of IEEE  in Israel, Tel-Aviv, Israel, pp. 89-91, December 2002.

8)      T. Melamed, “Local Domain Modelling of High Contrast Scattering,” Electromagnetics in a Complex World mini symposium, University of Sannio, Benevento, Italy, February, 2003

9)      T. Melamed, “Localized Inverse Scattering of High Contrast Objects,” International Conference on Electromagnetics in Advance  Applications, Torino, Italy, September, 2003

10)   I. Tinkelman and T. Melamed, “Phase-space spectral representation for propagation in anisotropic medium,” URSI Proceedings of the 2004 International Symposium on Electromagnetic Theory, Pisa, Italy, 2004.

11)   Yakir Hadad and Timor Melamed, "Tilted Gaussian beam propagation in inhomogeneous medium", IEEE 24th Convention of Electrical and Electronic Engineers in Israel Eilat Nov. 2006.

12)   Yakir Hadad and Timor Melamed, "Tilted Gaussian beam propagation in inhomogeneous medium", URSI 2007 International Symposium on Electromagnetic Theory, Ottawa Canada, July, 2007. Y. Hada was awarded  URAI Young Scientist Award for this paper.

13)   Yakir Hadad and Timor Melamed, "Local spectrum representation of waves in inhomogeneous media using non-orthogonal coordinate system", invited paper for special session, "Radiation and Scattering of waves;" A tribute to Prof. L.B. Felsen, ICEAA, Torino Italy, Nov. 2007.

14)  T. Melamed and L.B. Felsen, “Pulsed beam propagation in lossless dispersive media. II  - Implementation,” The 133rd Meeting of the Acoustical Society of America, State College, Pennsylvania, June 1997.

15)  T. Melamed, E. Heyman and L.B. Felsen, “Operational options for forward and inverse born-type scattering using pulsed beam pre- and post-processing strategies,” Joint International IEEE/AP-S and URSI Symposium, Montreal, Canada, July 1997.

16)  T. Melamed and L.B. Felsen, “Pulsed beam propagation in dispersive media,” Proc. of the 5th International Symposium on Antennas, Propagation, and Theory (ISAPE2000) , pp. 329 -332, Beijing, China, August, 2000.

17)  D. Censor and T. Melamed, “Volterra differential constitutive operators and locality considerations in electromagnetic theory,” The International Symposium on Optical Science and Technology, SPIE's 47th Annual Meeting, Seattle, Washington, July 2002.

18)  T. Melamed, “Localized Asymptotic Born Approximation – On-route Towards Large Scale Inverse Scattering,” XXVIIth URSI General Assembly, Maastricht, The Netherlands, August 2002.

19)   I. Tinkelman and T. Melamed, “Pulsed Beam Propagation in Dispersive Anisotropic Media,” The 22nd convention of IEEE Israel section, Tel-Aviv, Israel, December 2002 (I. Tinkelman has been awarded the “Best paper award” in the student papers competition).

20)  T. Melamed, “Localized Asymptotic Born Approximation – On-route Towards Large Scale Inverse Scattering,” The 22nd convention of IEEE Israel section, Tel-Aviv, Israel, December 2002.

21)  D. Censor and T. Melamed, “Volterra differential constitutive operators and locality considerations in electromagnetic theory”, Proceedings of the SPIE - The International Society for Optical Engineering, Vol. 4806, pp. 81-91, 2002.

22)  T. Melamed, “Localized Inverse Scattering,” International Conference on Electromagnetics in Advanced Applications, Torino, Italy, September, 2003.

23)  T. Melamed, “Local Domain Modelling of High Contrast Scattering,” Electromagnetics in a Complex World mini symposium, University of Sannio, Benevento, Italy, February, 2003

24)  T. Melamed, “Localized Inverse Scattering of High Contrast Objects,” International Conference on Electromagnetics in Advance Applications, Torino, Italy, September, 2003.

25)  T. Melamed, “Transient Phase-Space Inhomogeneous Green's Function for Modeling High Contrast Scattering,” Euro Electromagnetics, Magdeburg, Germany, July 2004.

26)  I. Tinkelman and T. Melamed, “Gaussian and Pulsed Beam Propagation in Anisotropic Media,” Euro Electromagnetics, Magdeburg, Germany, July 2004.

27)  I. Tinkelman and T. Melamed, “Phase-space spectral representation for propagation in anisotropic medium,” URSI Proceedings of the 2004 International Symposium on Electromagnetic Theory, Pisa, Italy, 2004.

28)  Y. Hadad and T. Melamed, "Tilted Gaussian beam propagation in inhomogeneous medium", IEEE 24th Convention of Electrical and Electronic Engineers in Israel Eilat, 2006.

29)  Y. Hadad and T. Melamed, "Tilted Gaussian beam propagation in inhomogeneous medium", URSI 2007 International Symposium on Electromagnetic Theory, Ottawa Canada, July, 2007. Y. Hadad was awarded  URAI Young Scientist Award for this paper.

30)  Y. Hadad and T. Melamed, "Local spectrum representation of waves in inhomogeneous media using non-orthogonal coordinate system", invited paper for special session, "Radiation and Scattering of waves," A tribute to Prof. L.B. Felsen, ICEAA, Torino Italy, Nov. 2007.

31)  T. Danov and T. Melamed, "Relativistic plane-wave  decomposition of electromagnetic waves", IEEE 25-th Convention of Electrical and Electronics Engineers in Israel, Eilath, December 2008.

32)  T. Melamed, "Beam decomposition of time-harmonic electromagnetic waves," International Conference on Electromagnetics in Advance Applications, Torino, Italy, September, 2009.

33)  T. Melamed, H. Haim and C. Maron, "Plane-wave decomposition of scattered EM Gaussian-Beam from Moving Dielectric Interface," URSI 2010 International Symposium on Electromagnetic Theory, Berlin Germany, August, 2010.

34)  T. Melamed, I. Adar and B. Shetzer, "Transient Plane-wave Decomposition of Scattered EM Pulsed Beams from Moving Dielectric Interface," URSI 2011 General Assembly, Istanbul Turkie, August, 2011.

35)  T. Danov and T. Melamed, "Relativistic Longitudinal Green's Function in the Presence of a Moving Planar Dielectric-Magnetic Discontinuity," Progress in Electromagnetics Research Symposium, Moscow, August 2012.

36)  C. Maron and T. Melamed, "Scattering of Gaussian-Beams and Pulsed-Beams from a Fast Moving Planar Dielectric Magnetic Half-space," Progress in Electromagnetics Research Symposium, Moscow, August 2012.

37)  T. Danov and T. Melamed, "Relativistic Current Line Green's Function in the Presence of a Moving Planar Dielectric-Magnetic Medium," IEEE 27-th Convention of Electrical and Electronics Engineers in Israel, Eilath, November 2012.

38)  E. Mizrahi and T. Melamed, "Plane wave spectral analysis of scattering of an EM Gaussian beam by a moving PEC circular cylinder," IEEE 27-th Convention of Electrical and Electronics Engineers in Israel, Eilath, November 2012.

39)  R. Tuvi and T. Melamed, "Gaussian beam diffraction by a fast moving PEC wedge via plane wave spectral decomposition," IEEE 27-th Convention of Electrical and Electronics Engineers in Israel, Eilath, November 2012.

40)  C. Maron and T. Melamed, "Spectral Analysis of TE Beam Scattering from a Moving Planar Dielectric-Magnetic Half-Space," IEEE 27-th Convention of Electrical and Electronics Engineers in Israel, Eilath, November 2012.

41)  E. Mizrahi and T. Melamed, "Gaussian Beam Propagator Scattering by a Fast Moving Perfectly Conducting Circular Cylinder," (invited), URSI 2013 International Symposium on Electromagnetic Theory, Hiroshima Japan, May, 2013.

 

42)  R. Tuvi and T. Melamed, "Gaussian Beam Diffraction by a Fast Moving Wedge," URSI 2013 International Symposium on Electromagnetic Theory, Hiroshima Japan, May 2013.

 

43)  T. Danov and T. Melamed, "Time-Domain Green’s Function of a Moving Planar Dielectric-Magnetic Discontinuity" International Conference on Electromagnetics in Advance Applications, Torino, Italy, September, 2013.

 

44)  R. Tuvi and T. Melamed, "Scalar Pulsed Beam Scattering by a Fast Moving Soft Wedge," URSI General Assembly 2014, Beijing, China, August 2014.

 

45)  R. Tuvi and T. Melamed, "Pulsed Beam Scattering by a Fast Moving PEC Wedge” The 28th convention of IEEE Israel section, Eilat, Israel, December 2014 (R. Tuvi has been awarded the “Best paper award” in the student papers competition).

 

46)  R. Tuvi, E. Heyman and T. Melamed, "Propagating Beam Frame: A Novel Formulation for Time-Dependent Radiation and Scattering," URSI 2016 International Symposium on Electromagnetic Theory, Espoo Finland, August 2016.

 

47)  G. Lahav and T. Melamed, "Evolutionary Algorithms Applications for Inverse Scattering using Gaussian Beams," URSI 2016 International Symposium on Electromagnetic Theory, Espoo Finland, August 2016.

 

48)  R. Tuvi, E. Heyman and T. Melamed, "Propagating Beam Frame: A Novel Formulation for Local inverse Scattering," XXXII URSI General Assembly and Scientific Symposium, Montréal, Québec, Canada, August 2017.

 

49)  T. Melamed and A. Shlivinski, "2D Custom Made Caustic Beams," ICEAA - IEEE APWC, Verona, Italy, September 2017 (invited paper).

 

50)  R. Tuvi, E. Heyman and T. Melamed, "Beam Domain Formulation for Tomographic Inverse Scattering. Part I: The Forward Problem," 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, Massachusetts, July 2018.

 

51)  R. Tuvi, E. Heyman and T. Melamed, "Beam Domain Formulation for Tomographic Inverse Scattering. Part II: The Inverse Problem," 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, Massachusetts, July 2018.

 

52)  E. Mizrahi and T. Melamed, "Wave Phenomena of Plane Wave Scattering by a Moving Circular Cylinder," ICSEE International Conference on the Science of Electrical Engineering, Eilat, Israel, December, 2018.

 

53)  T. Melamed, "Design of 3D Planar Caustic Beams in the Frequency and the Time domains," URSI 2019 International Symposium on Electromagnetic Theory, San Diego, CA, USA, May 2019 (invited).

 

54)  R. Tuvi, E. Heyman and T. Melamed, "Beam Frame Formulation for time-dependent Tomographic Inverse Scattering in a Noisy Background," URSI 2019 International Symposium on Electromagnetic Theory, San Diego, USA, May 2019 (invited).

 

55)  G. Lasry, T. Melamed and Y. Brick, “A Design Scheme for Arbitrary 3-D Caustic Beam Field Patterns”, URSI General Assembly, Rome, Italy. Sep. 2020.

 

 

Courses

1.      Electromagnetic Fields

2.      Propagation of Waves in communication channels

3.      Analytical Methods in Electromagnetics

4.      Spectral Methods in Wave Theory

5.      Ray methods in wave theory

6.      Waves and Distributed Systems

7.      Introduction to Linear Systems

8.      Introduction to Electrical engineering