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:: Dr.Chaldavi ::

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1- Faculty profile

Family Name: Ahmad

First Name: Cheldavi

Title: Professor

Positions:

1991-1998: Instructur in Iran University of Science and Technology (IUST)

Feb. 1999-Dec. 1999: Visiting Scholar in the University of Waterloo,Waterloo, ON, Canada

2000- 2004: Assistant Professor at the College. of Electrical Engineering of IUST

2004 - 2008 : Associate Professor at the College. of Electrical Engineering of IUST

2008- present: Professor at the College. of Electrical Engineering of IUST

Contact imformation:

Tel: (9821) 73225700  Fax: URL:

Email : cheldavi(At)iust.ac.ir

2- Higher Education

B. Sc.: 1988-1992, IUST, Tehran, Iran

M. Sc.: 1992-1994, University of Tehran, Tehran, Iran

Ph. D.: 1994-2000, University of Tehran, Tehran, Iran

Subject of B. Sc. Thesis: Analysis of Transients in Digital and Analog Transmission Lines

Subject of M. Sc. Thesis: Time-Domain Analysis of  Transmission lines

Subject of Ph. D. Thesis: Simulation, Modeling and EMI Analysis of Nonuniform Coupled Transmission

Lines: Application in Packaged VLSI Interconnects

3- Expertise

  1. Electromagnetic Compatibility (EMC & EMI)

  2. Microwave Absorbers

  3. Microwave Transmission Lines

  4. High Power Microwave Sources (Generators)

  5. Interconnect Characterization, Simulation and Analysis

  6. Time-Domain Analysis of Transmission lines and EMI Analysis

  7. EM Absorbers

  8. Application of Genetic Algorithms in Electromagnetic.

4- Taught Couses

Graduate Courses:

 
Electromagnetic Compatibility (8 Courses)

spring 2001,

 spring 2002,

 spring 2003

 spring 2004

 spring 2005

Spring2007

 Spring2009

 Spring2011

 Spring2014

Advanced Electromagnetics (12 Courses)

Fall 2002

Fall 2003

Fall 2004

Fall 2005

Fall 2006

Fall 2007

Fall 2008

Fall 2009

Fall 2010

Fall 2011

Fall 2012

Fall 2013

Fall 2014

Undergraduate Courses:

Fall 1993-Spring 2014Signals and Systems  (36 courses)
Fall 2000-Fall 2002Electromagnetics  (4- courses)
Fall, Spring 1994 , Spring 2002Communication Systems I  (3-courses)
Fall, Spring 1995Communication Systems II (2-courses)
Fall 2004,Spring2013Electromagnetics Field and Waves(2-Courses)
Spring 2014Antennas

 

5- Research and Industrial Projects:

6- Journal Papers :

1. A. Cheldavi, “Optimum design of N-sheet capacitive Jaumann absorbers,” IEICE Trans. Fundamentals, vol. E82-A, No. 4, pp. 704-706, April. 1999.

2. A. Cheldavi, M. Kamarei and S. safavi Naeini, “First order approximation of the exact solution of arbitrary nonuniform transmission lines: application in high speed integrated circuits,” IEICE Trans. Electron., vol. E82-c, no. 12, pp. 1-7, Dec. 1999.

3. A. cheldavi, H. oraizi and M. kamarei, “Time-domain analysis of transmission lines,”Int. Jornal ofEngineering Science, vol.9, no. 4, pp. 1-23, 1998.

4. A. cheldavi, M. kamarei and S. Safavi Naeini, “Analysis of coupled transmission lines with power law characteristic impedance,” IEEE Trans. Electromagn. Compat.,vol. 42, No. 3, pp. 308-312, Aug. 2000.

5.A. Cheldavi, “Fraequency domain analysis of coupled transmission lines with exponential power law characteristic impedance,"IEEE Trans. on Microwave Theory Tech., Vol. 49, No. 1, pp. 197-199, Jan. 2001.

6. A. Cheldavi, G. Rezai-rad, “Modeling of nonuniform coupled transmission lines Interconnect using genetic algorithms,”IEICE Trans. Fondumentals, Electronics, Communications and computer Science, Vol.E83-A, No. 10, pp. 2023-2034, Oct. 2000.

7. A. Cheldavi and G. Rezaei-Rad, “ Analysis of coupled transmission lines with linear tapered characteristic impedance,” Int. Jornal ofEngineering Science, Vol. 13, No. 1, 2002, pp. 63-73.

8. A. Cheldavi and G. Rezaei-Rad, “ An efficient discrete time-domain method for simulation and analysis of arbitrary nonuniform transmission lines,” Int. Jornal ofEngineering Science, 2002.

9.A. Cheldavi and G. Rezaei-Rad, “Radiation from Exponential Transmission Lines,“ Int. Jornal of Communication Engineering, 2002.

10. Ahmad Cheldavi, and Mohamad Khalaj Amir Hoseini, “ Time Domain Analysis of Circulant Symmetric Transmission Lines” Int. Jourrnal of Electromagnetic Waves and Application, Vol. 16, No. 7, pp. 977-994, 2002.

11. Ahmad Cheldavi, “Radiated Emission from Transmission Lines: Exact Time Domain Analysis” Int. Journal of Eng. Science, 2003.

12. Ahmad Cheldavi,” Radiation from coupled multiconductor transmission lines” IEE Proc.-Gener. ransm. Distrib., Vol. 150, No. 1,Vol.150, No.4, pp.279-284, Aug. 2003.

17.Ahmad Cheldavi,”Field Coupling to Nonuniform Coupled Microstrip Transmission Lines." International Journal of RF and Microwave Computer-Aided Engineering Published by John Wiley & Sons, Inc, 2003.

18.Ahmad Cheldavi and Mohamad Khalaj Amir Hoseini, “Nonuniform circulant symmetric microstrip transmission lines ,” IEE Proc.-Microwave, Antennas and Propagation,Nov. 2003 .

19. . Mohamad Khalaj Amir Hoseini, Ahmad Cheldavi “Time domain analysis of circulant symmetric coupled transmission lines"IEE Proc.-Microwave, Antennas and Propagation,Vol. 150, No. 5, Oct. 2003.

20. A. Cheldavi," Spice Compatible Model for Multiconductor Transmission Lines Excited by External EM Field," Int. Journal Of Engineering. 2004.

 21. A. Cheldavi, M. M. danaei,"Capacitive Flux Comperession Generator," Int. Journal Of Engineering. 2004.

 22. Ahmad Cheldavi, " Exact Analysis of Externally Excited Coupled Transmission Lines with Linear Tapered Characteristic Impedance" Int. Jornal of Engineering Science, Vol. 13, No. 4, 2002, pp. 113-121.  

 23. M. Khalaj-Amirhosseini and A. Cheldavi, "Efficient Interconnect Design Using Grounded-Lines", J. of Electromagn. Waves and Appl., Vol. 17, No.9, pp.1289-1300, 2003.  

 24. M. Khalaj-Amirhosseini and A. Cheldavi, "The Use of Grounded Lines in Nonuniform Interconnect," J. of Electromagn. Waves and Appl., Vol. 18, No.5, pp.637-647, 2004. 

 25. A. Cheldavi , D. Ansari and M. Khalaj-Amirhosseini "Electromagnetic Coupling to Circulant Symmetric Multi-Conductor Microstrip Line” Chapter 10 of Progress in Electromagnetic Research PIER 49, pp. 189-201, 2004.

 26. M. Khalaj-Amirhosseini and A. Cheldavi, "Optimum Design of Microstrip RF Interconnects" J. of Electromagn. Waves and Appl., Vol. 18, No.12, pp.1707-1715, 2004.

 27. M. Khalaj-Amirhosseini and A. Cheldavi, " A New Two-Dimensional Analysis of Microstrip Lines Using Rigorously Coupled Multi-Conductor Strips Model" J. of Electromagn. Waves and Appl., Vol. 18, No.6, pp.809-825, 2004.

 28. M. Khalaj-Amirhosseini and A. Cheldavi, "Analysis of Circular Symmetric Coupled Strip and Microstrip Transmission Lines” Iranian Journal of Science and Technology, Transaction B, Vol.28, No. B3, pp. 365-372, 2004.

 29. A. Cheldavi, and D. Ansari, “ Efficient Frequency-Domain Modelling and Simulation of Nonuniform Coupled Transmission Lines:Application in Transient Analysis of VLSI Circuit”, Can. J. Elect. Comput. Eng., Vol. 29, No. 3, July 2004.

 30. A Cheldavi , G Rezaei Rad , Mahmoud Kamreh , The effect of external electromagnetic field on coupled lossless microstrip transmission lines, International Journal of Communication Engineering, 2004/01/21, 2, 2

 31. M. Khalaj-Amirhosseini , D. Ansari, and A. Cheldavi,” Field Coupling to Circulant Symmetric Microstrip TL”, IEEE Trans. EMC, Vol. 47, No. 2, pp. 263-273, May 2005.

 32. M. Khalaj-Amirhosseini and A. Cheldavi, “Matched Interconnect Design Using Groun-Surronded Microstrip Line”, IEE Proc.-Circuits Devices Syst., Vol. 152, No. 1, Feb. 2005.

 33. M. Khalaj-Amirhosseini and A. Cheldavi, “Matched Interconnect Design Using Groun-Surronded Microstrip Line”, IEE Proc.-Circuits Devices Syst., Vol. 152, No. 1, Feb. 2005.

 34. G. Rezai-Rad and A.Cheldavi, “Discrete Time-Domain Analysis of Nonuniform Lossless Coupled Transmission Lines”, Journal of Circuits, Systems, and Computers, Vol. 14, No. 5, (2005), pp. 973-986.

 35. R. Pazoki, and A. Cheldavi, “A New Technique to Find the MEI Coefficients in the Time Domain:Self Metron Techniques” Progress in Electromagnetic Research, PIER 56, pp. 53-66, 2005.

 36. M. Hashemi Nasab, and A. Cheldavi, “A simple model for two orthogonal microstrip interconnects in different layers” To be published in J. of Electromagn. Waves and Appl., 2005.

 37. M. Khalaj-Amirhosseini and A. Cheldavi, “Wideband and Efficient Microstrip Interconnects Using Multi-Segmented Ground and Open Traces”, Progress in Electromagnetic Research, PIER 55, pp. 33-46, 2005

 38. A. Cheldavi “Comparison of Exact Analysis and Steplines Approximation for Externally Excited Exponential Transmission Line”, International Journal of Engineering, Vol. 18, No. 1, Feb. 2005, pp. 17-25.

 39. A. Cheldavi, "RESPONSEOF CIRCULAR SYMMETRIC MULTICONDUCTOR....", IEEE Trans. EMC, 2005.

 40. Amirhosseni, M.K. ; Ansari, D. ; Cheldavi , A. " Response of circular symmetric multiconductor microstrip line to an electromagnetic field “ Electromagnetic Compatibility, IEEE Transactions on Volume: 47 , Issue: 2 DOI: 10.1109/TEMC.2005.847380 Publication Year: 2005 , Page(s): 263 - 273

 41. M. Hashemi Nasab, and A. Cheldavi, “A simple model for two orthogonal microstrip interconnects in different layers” J. of Electromagn. Waves and Appl., PIER 59, 2006

 42. A. Cheldavi, and P. Nayeri, “Circular Symmetric Multiconductor V-Shaped Transmission Lines: A New Type of Microwave Interconnects,” Journal of Electromagnetic Waves and Applications, Vol. 20, No. 4, 2006, pp. 461-474.

 43. A. Cheldavi, and A. Arshadi, “A Simple Model for the Orthogonal Coupled Strip Lines in Multilayer PCB: Quasi-TEM Approach”, Progress in Electromagnetic Research, PIER 59, 2006, pp. 39-50.

 44. M. kazeroni, and A. Cheldavi,"Simulation, Analysis, Design and Applications of Array Defected Microstrip Structure (ADMS) Filters Using Rigorously Coupled Multi-Strip (RCMS) Method", Progress in Electromagnetic Research, PIER 63, 2006, pp. 193-207.

 45. A. Cheldavi, and A. Arshadi, “Simple and Novel Model for Edged Microstrip Lines (EMTL)", Progress in Electromagnetic Research, PIER 65, 2006, pp. 247-259.

 46. A. Cheldavi, and A. Arshadi, “Coupling Model for the Two Orthogonal Microstrip Lines in Two Layer PCB Board (Quasi-TEM Approach)", Progress in Electromagnetic Research, PIER 60, 2006, pp. 153-163.

 47. A. Cheldavi, and P. Nayeri, “Analysis of V Transmission Lines Response to External Electromagnetic Field,” Progress in Electromagnetic Research, PIER 68, 2007, pp. 297-315.

 48. Emad Al-Naser, Ahmad Cheldavi,” The effect of external EM waves on a confocal elliptical multiconductor transmission line structure ”, IET Microwaves, Antennas & Propagation, 2008.

 49. Hamid Khodabakhshi, Ahmad Cheldavi, “Response of Coplanar Transmission Lines to an Incident EM Field,” International Journal of RF and Microwave Computer-Aided Engineering, 2008.pp157-267

 50. Hamid Khodabakhshi, Ahmad Cheldavi, “ EM Field Coupling to Non Uniform Microstrip Lines Using Coupled Multi-Conductor Strips Model ” Progress In Electromagnetic Research, PIER B, Vol 17, 309-326, 2009.

 51. A. Cheldavi," Analysis, Modeling, and Design of Cascaded Defected Microstrip forPlanar Circuits", John Wiley Journal, 2009

 52.M. Kazerooni, A.Cheldavi, M. Kamarei, “ Unit Length Parameters Transition Sharpness and Levelof Radiation in Defected Microstrip Structure," Piers M, Vol. 10, PP.93-102, 2009

 53.The Effect of an External Electromagnetic Field on Orthogonal Coupled Microstrip Transmission Lines Mohssen Baqerian;Ali Arshadi;Ahmad Cheldavi PIER C , 2009, DOI: 10.2528/PIERC09062603

 54. Hamid Khodabakhshi, Ahmad Cheldavi, “Numerical Analysis of Human Head Interaction with PIFA Antennas in Cellular Mobile Communications,” Progress in Electromagnetic Research B, vol. 22, pp-359-377, 2010.

 55. Hamid Khodabakhshi, Ahmad Cheldavi, “Irradiation of a Six-Layered Spherical Model of Human Head in the Near Field of a Half-Wave Dipole Antenna” IEEE Trans. Micrwave Theory and Tech., vol. 58, no. 3, pp. 680-690, March 2010.

 56. M. Kazerooni, a. Cheldavi, M. Kamarei, “ Crosstalk and Electromagnetic Noise Investigation for a Coupled Pair of Microstrip Lines with a Break in Ground Structure,” IET Microwave, antennas & Propagation, vol 4, Issue 9, pp. 1336-1346, Sep. 2010.

 57. M. Kazerooni, M.A. salari. A. Cheldavi, M. Kamarei, “ Radiation Improvement of Wide band MultiRing Microstrip Antenna Using Break in Ground Structure," Microwave & Optical Technology Letters, Vol. 52, No.7,July 2010, pp. 1645-1647.

 58. M. Kazerooni, N.P. Gandji, A. Cheldavi, M. Kamarei, “Harmonics Blocking in the Inset FedMicrostrip Patch Antenna Using Cascaded Defected Microstrip Structure,"Int. Journal of RF & Microwave-Aided Engineering, Vol. 20, No.6, Nov. 2010,pp. 603-610.

 59 . M. Kazerooni, a.Cheldavi, M. Kamarei, "Analysis, Modeling and Design of Cascaded DefectedMicrostrip for Planar Circuits" John Willey Journal, 2010.

 60. Hamid Khodabakhshi, Ahmad Cheldavi,“Numerical Analysis of Human Head Interaction with PIFA Antennas in CellularMobile Communications,” Progress in Electromagnetic Research B, vol. 22,pp-359-377, 2010.

 61. HamidKhodabakhshi, Ahmad Cheldavi, “Irradiation of a Six-Layered Spherical Model ofHuman Head in the Near Field of a Half-Wave Dipole Antenna” IEEE Trans. Micrwave Theory and Tech., vol. 58, no. 3,pp. 680-690, March 2010.

 62. M. Kazerooni, A.Cheldavi, M. Kamarei, “Crosstalk and Electromagnetic Noise Investigation for aCoupled Pair of Microstrip Lines with a Break in Ground Structure,” IETMicrowave, antennas & Propagation, vol 4, Issue 9, pp. 1336-1346, Sep.2010.

 63. Sayed Mohammad Javad Razavi;Mohammad Khalaj-Amirhosseini;Ahmad Cheldavi “Minimum Usage of Ferrite Tiles in Anechoic Chambers “ PIER B , 2010, DOI: 10.2528/PIERB09122102

 64. A. Cheldavi, "ANovel Method for Crosstalk Reduction in Coupled Pair Microstrip Lines",International Journal of RF and Microwave Computer-Aided Engineering, 2011.

 65. M. Kazerooni, M. A.Salari, A. Cheldavi, M. Kamarei, “A Novel Method for crosstalk Reduction inCoupled Pair Microstrip Lines," Int. Journal of RF & Microwave-AidedEngineering, Vol. 22, No.2, March. 2012, pp. 167-174

 66. Siroos Bahrami;Ahmad Cheldavi;Ali Abdolali “ Moving Target Tracking Using Time Reversal Method “ PIER M , 2012, DOI: 10.2528/PIERM12041801

 67.Siroos Bahrami, Ahmad Cheldavi , Ali Abdolali: Ultrawideband Time-Reversal Imaging With Frequency Domain Sampling. IEEE Geosci. Remote Sensing Lett. 11(3): 597-601 (2014)

 68. S. Bahrami, A. Cheldavi & A. AbdolaliAnalytical SVD for reconstruction of the radiating current in inverse EM scattering “ Journal of Electromagnetic Waves and Applications Volume 28, Issue 16, 2014 pp 2074-2087

 69. احمد چلداوی، غلامعلی رضائی راد، محمود کمره ا ی اثر تابش میدان های الکترومغناطیسی خارجی بر خطوط انتقال تزویج شده ریز نوار بی تلف مجله بین المللی مهندسی ارتباطات 1381

 70. احمد چلداوی، غلامعلی رضائی راد تشعشع از خطوط انتقال غیر یکنواخت نمائی(علمی مروری) مجله بین المللی مهندسی ارتباطات 1381

7- Confrence papers:

  1. A. Cheldavi, H. Oraizi and M. Kamarei,” Time-domain analysis of transmission lines,” Proc. 25th EuMC, pp. 794-797, Sep. 4-7, 1995, Bologna, Italy.

   2. A. Cheldavi and M. Kamarei, “Time-domain analysis of broadband matching for maximum power transmission with TEM steplines,” Proc. APMC’96, pp. 1378-1383, Dec. 17-20, 1996, New Delhi, India.

   3. A.cheldavi,” Time-domain simulation of TEM steplines,” Proc. APMC’96, pp.1384-1387, Dec. 17-20, 1996, New Delhi, India.

   4. A. Cheldavi, “An exact solution for wave equation in lossless TEM transmission lines with time-dependent media and nonlinear time-dependent load (using time-domain analysis),” Proc. ISAP’96.pp. 445-448, Sep. 24-27, 1996, Chiba, Japan.

   5. A. Cheldavi, “Time-domain analysis of TEM transmission lines with random media,” Proc. ISEF’97, Sep. 25-27, 1997,Gdansk, Poland.

   6. A. Cheldavi, “Propagation of transients in tapered transmission lines with dispersive dielectric media and time-dependent load using FDTD method,” Proc. IEEE AP-s 1997, pp. 392-395, July 13-18, 1997, Montreal, Canada.

   7. A. Cheldavi and M. Kamarei, “Practical optimum design for a single-layer electromagnetic wave absorber at C and X-band using genetic algorithm,” Proc. IEEE AP-s 1997, pp. 1708-1711, July 13-18, 1997, Montreal, Canada.

  8. A. Cheldavi and M. Kamarei, “Time-domain (transient) analysis of capacitive Jaumann absorbers,” Proc. IEEE MTT-s 1997, June 8-13, 1997, Denever, Colorado, USA.

   9. A. Cheldavi, “A new method for impedance mesearment of the circuit analog sheets,” Proc. IWTS’97, May 14-16, 1997, Shah Alam, Malaysia.

   10. A. Cheldavi, “Exact analysis of transmission lines with time-dependent boundary conditions,” Proc. IWTS’98, May 11-15, 1998, Malaysia.

   11. A. Cheldavi, “Optimum design of radar pulses for stealth targets,” Proc. IEEE AP-s 1998, June 21-26, 1998, Atlanta, USA.

   12. A. Cheldavi, “Measurment of complex permittivity and permeability of dielectric materials using a coaxial transmission line with sensitivity and error analysis,” Proc. PIERS’98, July 13-17, 1998, Nantes, France.

   13. A. Cheldavi, M. Kamarei and S. Safavi Naeini, “Exact time-domain analysis of coupled transmission lines with general loads (application to crosstalk in high speed circuits),” Proc. ANTEM’98, Torento, Canada.

   14. A. Cheldavi, “Exact analysis of externally excited coupled linear tapered nonuniform transmission lines,” Proc. EMC’99, May 17-21, 1999, Tokyo, Japan.

   15. A. Cheldavi, “Exact analysis of coupled nonuniform transmission lines with power-law characteristic impedance functions,” Proc. EMC’99, May 17-21, 1999, Tokyo, Japan.

   16. A. Cheldavi, S. Safavi Naeini and M. Kamarei, “Time-domain analysis of nonuniform coupled planar lines in VLSI circuits,” Proc. PACRIM’99, Aug. 22-24, 1999, Victoria, BC, Canada.

  17. A. Cheldavi, A. Foroozesh, and F. Hodjat, “Analysis of frequency selective surface using entire domain method,” Proc. of IWTS’99, Shah Alam, Malysia, May 1999.

   18. A. Cheldavi, A. Foroozesh, “Improved measured equation of invariance,” Proc. of IWTS’99, Shah Alam, Malysia, May 1999.

   19. A. Cheldavi and G. Rezai Rad, “ Discerete time-domain analysis of nonuniform lossless coupled transmission lines,” Proc. of ISAPE 2000, Aug. 16-18, 2000, Beijing, China.

   20. A. Cheldavi and G. Rezai Rad, “ The response of rotative two wire transmission line excited by external electromagnetic field,” Proc. of ISAPE 2000, Aug. 16-18, 2000, Beijing, China.

   21. A. Cheldavi and G. Rezai Rad, “ Time-domain analysis of coupled Hermite transmission lines,” Proc. of ISAPE 2000, Aug. 16-18, 2000, Beijing, China.

   22. A. Cheldavi, M. Kamarei, and S. Safavi-Naeini, “Transient analysis of coupled transmission lines with power law characteristic impedance,” presented at 4th European Sym. on EMC, Brugge, Belgium, Sep. 11-15, 2000.

  23. A Cheldavi, S. Safavi-naeini, and M. Kamarei, “Nonuniform coupled VLSI interconnect characterization using genetic algorithm,” presented at International Conference on Microelectronic ICM’2000, Tehran, Iran, Oct. 31-Nov. 2, 2000.

  24. Alireza Foroozesh, Ahmad Cheldavi, and Farokh Hodjat, “Design of Jaumann absorbers using adaptive genetic algorithm,” Proc. of ISAP 2000, Fukuoka, Japan, Aug. 21-25, 2000.

  25. A. Cheldavi. “Analysis of Radiation from Nonuniform Transmission Lines,” Proc. of 2001 IEEE EMC Symposium, Montreal, Canada, Aug. 13-17, 2001.

  26 Cheldavi, A “ Exact analysis of coupled nonuniform transmission lines with exponential power law characteristic impedance “ Microwave Theory and Techniques, IEEE Transactions on Volume: 49 , Issue: 1 DOI: 10.1109/22.900008 Publication Year: 2001 , Page(s): 197 - 199

  27. Cheldavi , A. ; Safavi-Naeini, S. ; Rezai-Rad, G. " Field coupling to nonuniform microstrip transmission lines “ Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on Volume: 1 DOI: 10.1109/ISEMC.2001.950721 Publication Year: 2001 , Page(s): 643 - 648 vol.1

  28. Ahmad Cheldavi, D. Ansari, and Mohamad Khalaj Amir Hoseini,” Circulant Symmetric Multi Conductor Microstrip Line Exposed to EM Field”, Proc. IASTED Int. Conf. CSN, Sep. 2004, pp. 313-316, Marbella, Spain.

  29. Mohamad Khalaj Amir Hoseini and Ahmad Cheldavi,” Optimum and Wideband Design of G-S-G Interconnect,”, Proc. IASTED Int. Conf. CSN, Sep. 2004, pp. 310-312, Marbella, Spain.

  30. Mohamad Khalaj Amir Hoseini and Ahmad Cheldavi, " Wideband and Efficient Interconnect Using Multi-Segmented Grounded and Opened Lines", Proc. Of 34-th European Microwave Conference , pp. 657-660, Amesterdam, 2004.

  31. R. Pazoki, and A. Cheldavi, “Self-Metron MEI Technique"," 2005 IEEE AP-S Int. Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Washington, DC, USA, July 3-8, 2005.

  32. Ahmad Cheldavi, Mohamad Khalaj Amir Hoseini, Shima Abbasi” Coplanar Transmission Line Exposed to Electromagnetic Field”, Proc. 2005 IEEE International Symposium on Microwave, Antenna, Propagatio and EMC Technologies for Wireless Communications, Sep. 2005, pp. 1092-1095, Beijing, China.

  33. Mohamad Khalaj Amir Hoseini and Ahmad Cheldavi,” Two-Dimensional Time Domain Analysis of Microstrip Lines Using RCMS Model”, Proc. 2005 IEEE International Symposium on Microwave, Antenna, Propagatio and EMC Technologies for Wireless Communications, Sep. 2005, pp. 1252-1254, Beijing, China.

  34. Ahmad Cheldavi, and Maryam Hashemi Nasab,” Coupling Model for the Two Orthogonal Microstrip Lines in Two Layer PCB Board (Quasi-TEM Approach)”, Proc. 2005 IEEE International Symposium on Microwave, Antenna, Propagatio and EMC Technologies for Wireless Communications, Sep. 2005, pp. 1096-1099, Beijing, China.

  35. A. Cheldavi, and M. Khalaj-AmirHosseini, “An Explicit Form for Green’s Function of Multi-Layer Structures”, Proceedings of APMC2005, China.

  36. Cheldavi , A. ; Khalaj-Amirhosseini, M. ; Abbasi, S. " Coplanar transmission line exposed to electromagnetic field “ Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on Volume: 2 DOI: 10.1109/MAPE.2005.1618110 Publication Year: 2005 , Page(s): 1092 - 1095 Vol. 2

  37.Cheldavi , A Ghaemi H. Applying a novel method to the analysis of asymmetrical transverse slit in microstrip line November 2005 ICECS'05: Proceedings of the 4th WSEAS international conference on Electronics, control and signal processing Publisher: World Scientific and Engineering Academy and Society (WSEAS)

  38. Payam Nayeri, and Ahmad Cheldavi “A Novel Method For Analysis Of V-Transmission Lines” Proc. Of ANTEM/URSI 2006, Canada.

  39. Hamid Khodabakhshi, Ahmad Cheldavi, “Analytic Solution for the Problem of Excited Coupled Exponential Transmission Lines” Proc. Of ISAP'2006, Japan.

  40. Ahmad Cheldavi, “EM Field Coupling to Coplanar Transmission Lines” Proc. Of Asia-Pacific Microwave Conf.(APMC2006), India.

  41. P. Nayeri, and A. Cheldavi, " V-Transmission Lines Frequency Operation Band" Proceedings of ACES 2007, Verona, Italy

  42. Ahmad Cheldavi, “Accurate Analysis OF Transverse Slit In Microstrip in microstrip transmission lines” Proc. Of ICTTA, 2007, Syria.

  43. Hamid Khodabakhshi, Ahmad Cheldavi, “ EM Field Coupling to Microstrip Lines with Nonuniformity in Their Width Using Rigorously Coupled Multiconductor Transmission Lines” Proc. Of PIERS 2007, Czech.

  44. Ahmad Cheldavi, " EM Coupling to CoplanarTransmission Lines", Eleco, 2007

  45.Hamid Khodabakhshi, and Ahmad Cheldavi, “Method of Forces: A Novel Approach for Finding Current Distributions on Single and Coupled Microstrip Lines” Proc. Of EMC Zurich, Singapore, 2008.

  46. Hamid Khodabakhshi, Ahmad Cheldavi, “ Quasi-TEM Approach of Two Layer Circular Symmetric Coupled Microstrip Line ” Proc. Of EuMA 2008, Netherand.pp 203-206

  47. Hamid Khodabakhshi, Ahmad Cheldavi, “Response of non-uniform Microstrip Lines to an EM Field Using Rigorously Coupled Multi-Conductor strip Model.” SPI proceedings,2008.

  48. Hamid Khodabakhshi, Ahmad Cheldavi, “EM Field Coupling to Microstrip Lines Using Rigorously Coupled Multi Conductor Strips,” Proceedings of Asia-pacific Symposium on Electromagnetic Compatibility & 19th International Zurich Symposium on Electromagnetic Compatibility, pp 859-862, 19-22 May 2008, singapore.

  49. Mohammad Kazerooni, Ahmad Cheldavi, Mahmood Kamarei “A New Bandstop Cascaded Defected Microstrip Structure (CDMS) Filter with 10GHz Symmetrical Bandwidth

  ” PIERS 2009, Moscow.

  50. Mohammad Kazerooni, Ahmad Cheldavi, Mahmood Kamarei “A New Bandpass Defected Microstrip Structure (DMS) Filter for Planar Circuits” PIERS 2009, Moscow.

  51. Mohammad Kazerooni, , Novid Pour Ramazan Ganji, Ahmad Cheldavi, Mahmood Kamarei “A New Bandpass Defected Microstrip Structure (DMS)” PIERS 2009, Moscow.

  52. Mohammad Kazerooni, Ahmad Cheldavi, Mahmood Kamarei, "Behaviour Study of Simultaneously Defected Microstrip and Ground Structure," PIERS Beijing 2009

  53. Mohammad Kazerooni, Ahmad Cheldavi, Mahmood Kamarei, "Design and Fabrication of Wide Band Printed Multi-Ring Fractal Antenne," PIERS Beijing 2009

  54. AhmadCheldavi," Comparing theperformance of defected microstrip structure and defected groundstructure", 17th ICEE, 2009.

  55. Ahmad Cheldavi,"A novel bandpass defectedmicrostrip structure filter for planar circuits", PIERS, 2009, Moscow.

  56. Ahmad Cheldavi, Kazerooni, M. ; Salari, M.A."Analysis and modelling of novelbandstop and bandpass millimeter integrated technologies", 1st conferenceon millimeter wave and terahertz integrated technologies, 2009.

  57. Ahmad Cheldavi, "Interaction Between a Six-layered Spherical Head", Asia-PacificInternational Symposium on Electromagnetic Compatibility, April 12 - 16, 2010,Beijing, China.

58. Bahrami, S. ; Cheldavi , A. " Investigation of novel microstrip antennas for an implantable retinal prosthesis “ Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on Publication Year: 2010 , Page(s): 1 - 4

  59. Fallahzadeh, S. ; Molaei, A. ; Cheldavi , A. Microstrip Wilkinson power divider with multi-spurious suppression Antennas and Propagation (MECAP), 2010 IEEE Middle East Conference on DOI: 10.1109/MECAP.2010.5724208 Publication ,2010, Page(s):1 - 3

  60. Kazerooni, M. ; Salari, M.A. ; Cheldavi , A. ; Kamarei, M. " A very compact filter using defected microstrip structure with Island” Electrical Engineering (ICEE), 2011 19th Iranian Conference on Publication Year: 2011 , Page(s): 1 - 4 61.

 61. Salari, M. ; Cheldavi , A. " Analysis and Modeling of Externally Excited Multilayer Orthogonal Microstrip Lines “ Electromagnetic Compatibility, IEEE Transactions on Volume: 53 , Issue: 4 DOI: 10.1109/TEMC.2011.2164855 Publication Year: 2011 , Page(s): 1094 - 1097

  62. Ahmad Cheldavi, "Ultrawideband Time Reversal Imaging Using Frequency Domain MUSIC Algorithm", ICEME 2012,Iran, IUST

  63.Ahmad Cheldavi , Ali Abdolali Ultrawideband Time Reversal Imaging Using Frequency Domain MUSIC Algorithm Siroos Bahrami, دومین کنفرانس مهندسی الکترومغناطیس ایران

  64. احمد چلداوی، همایون عریضی، محمود کمره ا ی " بررسی خطوط انتقال با ورودی فرآیندهای اتفاقی" مجموعه مقالات سومین کنفرانس مهندسی برق ایران تهران، دانشگاه علم و صنعت ایران،1373 `

  65.احمد چلداوی ، محمود کمره ا ی، همایون عریضی " شبیه سازی خطوط انتقال پله ای بکمک فیلتر خطی گسسته زمان" مجموعه مقالات سومین کنفرانس مهندسی برق ایران تهران، دانشگاه علم و صنعت ایران،1373 `

 66. احمد چلداوی، همایون عریضی، محمود کمره ا ی " تحلیل خطوط انتقال در حوزه زمان با ورودی دلخواه و بارهای غیر خطی" مجموعه مقالات دومین کنفرانس الکترونیک ایران، شیراز، دانشکده صنعت الکترونیک،1373

 67. احمد چلداوی، محمود کمره ا ی ، ابوالفضل وحید شهیدی" بررسی انتشار امواج در بافت های چند لایه در موجودات زنده" مجموعه مقالات کنفرانس مهندسی پزشکی ایران، تهران، دانشگاه امیرکبیر،1376

 68. (مهدی نصیری)،احمد چلداوی، حبیب ا... عبیری،مهدی دانائی" اندازه گیری و مدلسازی اثر انواع روزنه ها در کاهش ضریب تاثیر پوشش " مجموعه مقالات دهمین کنفرانس مهندسی برق ایران کنفرانس مهندسی برق ایران، تبریز، 138 0

 69. احمد چلداوی، (محمدرضافکرکن)،(مصطفی مطاعی)،مهدی دانائی" اصول تجهیز پرتابه های نظامی به سر جنگی الکترومغناطیسی" اولین همایش سیستم های هوشمند،تهران،1380

 70. (آتوسا اسدی حقی)، محمد خلج امیر حسینی و احمد چلداوی "شبیه سازی مولد Vircator " یازدهمین کنفرانس مهندسی برق ایران،1381

 71. احمد چلداوی، غلامعلی رضائی راد" مسئله سازگاری الکترومغناطیسی در شهرهای الکترونیکی و اینترنتی" مجموعه مقالات همایش جهانی شهرهای الکترونیکی و اینترنتی، جزیره کیش،1380

  72 . مرتضی کازرونی و احمد چلداوی"طراحی و شبیه سازی آرایه ای از آنتن های میکرواستریپ" چهاردهمین کنفرانس مهندسی برق 1386.

  73. احمد چلداوی، "اعمال روش TLM برایناپیوستگیهای خطوط انتقال مایکرواستریپ"، کنفرانس مهندسی برق ایران،1383.

  74. احمد چلداوی، "طراحی وشبیه سازی ارایه ای از انتنهای میکرواستریپ ..."، چهاردهمین کنفرانس مهندسی برق ایران، 1385.

  75. احمد چلداوی، "طراحی انتن یک رادار ارایه فازی نمونه به همراه باند گپ الکترومغناطیسی"، چهاردهمین کنفرانس مهندسی برق، 1386.

  76.طراحی آنتن یک رادار آرایه فازی نمونه به همراه باند گپ الکترومغناطیسی و ارزیابی عملکرد این آرایه به هنگام از کار افتادن بعضی از عناصر تشعشعی ، احمد چلداوی ، مرتضی کازرونی ، همایون عریضی ، سید حسین محسنی ارمکی ، پانزدهمین کنفرانس مهندسی برق ایران

  77. مدلسازی شاخک سوسک به منظور بررسی تاثیر میدان الکتریکی بر روی آن ، فاطمه سادات ارزان فروش ، احمد چلداوی غلامعلی رضایی زاده ، هفدهمین کنفرانس مهندسی پزشکی ایران

  78. طراحی و شبیه سازی مولد پالسی ویرکیتور (VIRCATOR) آتوسا اسدی حقی محمد خلج امیرحسینی احمد چلداوی ، یازدهمین کنفرانس مهندسی برق

  79. مقایسه آنالیز ناپیوستگیهای خطوط مایکرواستریپ با استفاده از روشهای شبه استاتیک و TLM - SCN محمد فضائلی فر - حبیب ا.. عبیری - احمد چلداوی - علیرضا ملاح زاده ، دوازدهمین کنفرانس مهندسی برق ایران

  80. . بررسی اثر EMP بر مدار تقویت کننده کم نویز در فرکانس 099 MHz ، امیره کلهرزاده - احمد چلداوی - محمدمهدی عباسی دوانی - مهدی جوادزاده

  81. احمد چلداوی، "طراحی و شبیه سازی یک فیلتر میان نگذر مایکرواستریپی جدید با استفاده از استریپ شیار دار"، هفدهمین کنفرانس مهندسی برق، 1388.

  82. احمدچلداوی، "طراحی سامانه چند منظوره ضد سرقت خودرو با استفاده از داده های"، دومین کنفرانس بین المللی صنعت الکترونیک خودرو، 1388.

  83. بررسی اثر امواج خارجی بر خطوط انتقال ریزنوار متعامد ، احمد چلداوی ، محسن باقریان ، علی ارشدی اولین کنفرانس بررسی آثار میدانهای الکترومغناطیسی بر بافتهای زنده و تجهیزات الکتریکی و الکترونیکی

8- Books:

1. Signals and Systems, Volume 1 and 2 (in Persian)

Published by IUST Publishing Centre in 1993 and 2nd Edition in 1997

2. Electromagnetics (in Persian)

Published by IUST Publishing Centre in 1993 and 2nd Edition in 1997

3. Electromagnetic Compatibility  (in Persian)

Published by IUST Publishing Centre in 2004.

9- Professional Activities

  • 1991-1998: Instructur in Iran University of Science and Technology (IUST)
  • Feb. 1999-Dec. 1999: Visiting Scholar in the University of Waterloo,Waterloo, ON, Canada
  • 2000- 2004: Assistant Professor at the College. of Electrical Engineering of IUST
  • 2004- present: Associate Professor at the College. of Electrical Engineering of IUST
  • 10- Technical Report :

    11- Postgraduate Projects:

  • Outstanding student in the country in BSc. level, 1991.

  • Outstanding student in the country in PhD. level, 1997.

  • Subject of BSc. Thesis: "Analysis of Transients in Digital and Analog Transmission Lines"

  • Subject of MSc. Thesis: "Time-Domain Analysis of Transmission Lines"

  • Subject of PhD. Thesis: "Simulation, Modeling and EMI Analysis of Nonuniform Coupled Transmission Lines: Application in Packaged VLSI Interconnects".

  • 12- Honors, Recognition and Outstanding Achievements for Teaching and Research:

    1. Outstanding student in the country (Iran) in B. SC. level, 1991.

    2. Outstanding student in the country (Iran) in Ph. D. level, 1997.

    3. رتبه دوم خدمتگزاران انقلاب در سومین جشنواره خاتم

    13- Research Labs:

    14 - Interests

    1. EMC and EMI in VLSI circuits and interconnects.

    2. Interconnect Characterization , Simulation and Analysis.

    3. Time-Domain Analysis of Transmission Lines.

    4. EM Absorbers.

    5. Application of Genetic Algorithms in Electromagnetics.

    6. Shielding Theory and Practice

    7. Wireless Communication Systems

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