Dr. Abdel-Raouf – CV

HANY ABDEL RAOUF, PhD

 Winnipeg, Manitoba

R3Y 0L4, Canada

+1 (204) 898-2001

hany_el_feki@hotmail.com

 CANADIAN CITIZEN

RESEARCH INTERESTS

Applied Electromagnetics, Antenna Design and RF Engineering, Computational Electromagnetics, Electromagnetic Modeling using Parallel Processing, Electromagnetic Modeling and Simulation of Integrated Photonic structures, Metamaterials for antenna design and microwave circuits, Radar Scattering, Electromagnetic Compatibility and Interference (EMC/EMI) .

SUMMARY OF QUALIFICATIONS

  • More than 15 years of research and development experience in the areas of Applied Electromagnetics, Radio Frequency (RF), Antenna Design and Measurements, Telecommunication Engineering, Computational Electromagnetics, and Software Developments for 3D Scientific Computing
  • More than 8 years experience of teaching Electrical and Computer Engineering courses
  • More than 7 years of industrial experience
  • Participated in developing M.Sc. Telecommunication.Engineering Programme
  • Participated in developing the curriculum of a faculty of Engineering
  • Supervised M.Sc. and PhD research projects
  • Supervised projects of developing Finite Difference Time Domain (FDTD) electromagnetic software packages
  • Supervised a project of RF Design using Metamaterial structures
  • Developed an RF design laboratory
  • Developing commercial 3D software packages for modeling and simulation of RF and Microwave applications, and the electromagnetic effects of the lightning strikes
  • Developed the commercial software package CHRONOS
  • RF and Photonic Modeling and Simulation using CST, HFSS, MEEP, IES , IE3d
  • More than 10 years experience of technical presentations, workshops, short courses, etc.

Computer Experience:

  • Object Oriented Programming
  • C/C++
  • Matlab
  • Fortran
  • Python
  • Distributed Memory Parallel Processing using MPI
  • Shared Memory Parallel Processing using OpenMP and GPU
  • C#
  • Visual Basic & Scripting

Operating Systems: Windows and Linux

Development Tools: Visual Studio, Team Foundation Server

PROFESSIONAL EXPERIENCE

October 2016 – Present

Director and Senior Consultant

Hasystem Tech Inc. (www.hasystemtech.com )

271 Tim Sale Drive

Winnipeg, Manitoba

Canada

  • Provided consultations for industrial organizations  in the areas of photonics, antennas and RF design, and electromagnetic modeling and simulations
  • Proposing and initiating new projects and writing proposals
  • Developing Electromagnetic Codes

August 2009 – June 2016

Research and Development Engineer

Enginia Research Inc. (Integrated Engineering Software )

(www.integratedsoft.com) 220-1821 Wellington Ave, Winnipeg, ManitobaCanada

 

  • Developed the commercial electromagnetic software CHRONOS which is a time domain electromagnetic solver for modeling and simulation of the following applications:
  • Participated in the Research and Development in the area of the computer techniques for electromagnetics, and developing electromagnetic software for Integrated Engineering Software (www.integratedsoft.com).
  • Provided technical support and technical presentations to the customers and teach them how to use the high frequency programs (CHRONOS and SINGULA) in modeling and simulation of antennas and RF applications.
  • Wrote manuals for the high frequency programs.
  • Wrote R&D reports which were submitted to Canada Revenue.

 

January 2008 – August 2009

Associate Professor

May 2005 – December 2007

Assistant Professor

Faculty of Engineering

Electrical and Computer Engineering Department

International Islamic University Malaysia

P.O. Box 10

50728 Kuala Lumpur

Malaysia

  • Acted as a project leader for funded research projects in: Developing Finite Difference Time Domain (FDTD) Software for Antenna Design and Antenna Design using Advanced Materials for Wireless Communication.
  • Developed the RF design laboratory (which is a research laboratory).
  • Supervised post graduate students in the following research areas:

-Metamaterial Structures for antennas and microwave applications

-Bandwidth Enhancement of Antennas Based on the Composite Right/Left-

Handed (CRLH) Transmission-Line (TL)

-Antenna Design for RFID applications.

-UWB Printed Antennas.

 

Selected topics of my research work at IIUM:

A Novel Domain Decomposition Finite Difference Time Domain Scheme Including Multiple Reflections

Developing a Serial-Parallel FDTD Approach

Developing Compact Antennas based on DNG Metamaterials

Gain and Bandwidth Enhancement of Compact Antennas Designed Based on the Composite Right/Left-Handed (CRLH) Transmission-Line (TL)

Developing Printed Antennas for RFID Tag

Design of a Compact Band-Notched Antenna for UWB Communication

Design of a Millimeter Wave Imaging System for moving Targets

Design of Reconfigurable Patch Antenna with Switchable Slots

Design and Simulation of Linear Adaptive Antenna Array for Mobile Base Station

January 2004- April 2005

Visiting Assistant Professor

January 2003-  January 2004

Research Associate

January 2001 – January 2003

Post Doctoral Fellow

Electrical Engineering Department

Pennsylvania State University

University Park, PA

USA

Worked with Prof. Raj Mittra in the following research topics (through projects which were funded by the industry, Lincoln Lab-MIT, and the government):

Parallel FDTD algorithm using MPI Library for solving large electromagnetic problems: In this project, we have parallelized the CFDTD code to be able to solve very large electromagnetic problems using many processors based on the domain decomposition technique.

 

Computer techniques for Coupling between arrays: In this project I developed a new finite difference time-domain technique to solve the problem of coupling between two large arrays with existing an absorber between the two arrays.  Some of the results of this project have been presented (see in the section of publications).

Computer techniques for Microstrip phased arrays: In this project a specific attention has been paid towards the issue of modeling the coaxial feed line, using a voltage source with a lumped resistance type of internal impedance. We extended also the analysis to the case of planar array of microstrip patch antennas including coaxial lines for feeding and terminations.

Contributed to developing the commercial software package CFDTD for modeling microwave structures, RF antennas and microwave circuit components.

 We used the code for research projects, that resulted in many publications (see the list of my publications).

 Analysis of interconnect lines using FDTD : In this research the coupling effect (crosstalk) in parallel microstrip interconnects is analyzed by using the Finite Difference Time Domain (FDTD) Method. The interconnects are terminated either by lumped elements or by a Perfectly Matched Layer (PML) .

Scattering center analysis of a dielectric coated target:  In this project I investigated the currents induced on the surface of a dielectric coated target. This induced current is animated to show the waves traveling on its surface and to illustrate the localized diffraction mechanisms.

April 2004 – April 2005

Research Associate and Consultant

RM Associate

1211 Deerfield Dr

State College, PA, 16803-2207

USA

Worked in the following projects:

Estimation of the Electromagnetic Energy Protection for Electronic Equipment by Various Dielectric materials and shielding configurations: In this effort I have developed a new serial FDTD technique to solve the problem of penetration of the fields radiated by a biconical antenna into an electrically large building, with a measurement probe located inside the building. In order to simultaneously deal with wire-type antennas as well as lossy inhomogeneous structures, such as building walls, I have hybridized the FDTD method with the NEC code. First, the NEC code is employed to compute the field radiated by the transmitted antenna on a mathematical surface located just in front of the building. Next, the fields penetrated inside the building are evaluated by using the serial FDTD approach, and evaluate the field values on a Huygens’ box surrounding the receiving antenna. Finally we determined the field received by the probe antenna by using the reciprocity theorem.

 Developing the CBFM/FDTD which is a new FDTD technique which has successfully solved very large and complex problems involving upward of 10 billion unknowns.

 

August 2000- January 2001

Assistant Professor

1994- August 2000

Associate Researcher

1989-1994

Research Assistant

1987-1989

Engineer

Electronics Research Institute,

Microwave Engineering department, Dokki, Cairo

Egypt

  • Developed two new 3D 4th order FDTD schemes for solving large Electromagnetic Problems. I developed to the Electronics Research Institute a code for each scheme. The first scheme is the “M3d24” . The second scheme is the hybrid M3d24-Yee with subgridding .
  • Electromagnetic Comapatiability : In this project I was in charge to solve the problem of the transient response of a Paraboloidal Reflector Antennas to an Incident Impulse and Nuclear Electromagnetic pulse (EMP).
  • Developed Electromagnetic codes using the Moment Method that solve the integral Equations of:
  • PEC bodies of revolution (BOR)

Applications: Cylindrical antennas, monopoles above a circular disk, a biconical antenna, …. etc.

  • Dielectric BOR

Applications: Computations of the Radar Cross Section (RCS) of a dielectric sphere, spheroids, …. etc.

  • Conducting and a homogeneous BOR coupled through an aperture.

Applications: Dielectric Rod Antennas analysis and design.

EDUCATION

 

Postdoctoral Fellow (January 2001 – January 2003)

Electrical Engineering Department

Pennsylvania State University

University Park, PA 16802

USA.

Ph.D. in Electrical Engineering  (June 2000):

Electrical Engineering Department (Electronics & Communications),

Al-Azhar University, Faculty of Engineering, Cairo, Egypt

Thesis Title: “Transient Radiation and Scattering of Electromagnetic Waves”.

 

MSc in Electrical Engineering (1994):

Electrical Engineering Department (Electronics & Communications),

Al-Azhar University, Faculty of Engineering, Cairo, Egypt

Thesis Title: “Computer Aided Analysis of Dielectric and Conducting Rod Antennas”.

BSc (1986):

Helwan University, Faculty of Engineering, Communication and Electronics  Engineering Dept., Cairo, Egypt. Very good, ranked sixth in my graduation class.

PROFESSIONAL  MEMBERSHIP

Institute of Electrical and Electronics Engineering (IEEE) (Senior member)

Antennas and Propagation Society

Acted as peer reviewer for:

IEEE Transaction Antennas and Propagation

IEE Proceedings- Microwaves, Antennas and Propagation

International Journal of RF and Microwave Computer-Aided Engineering

TEACHING EXPERIENCE AND ACTIVITIES

A member of the following boards and committees:

  • Board of developing M.Sc. Communication.Engineering Programme for the ECE department, International Islamic University Malaysia.
  • Curriculum committee of the faculty of Engineering,  International Islamic University Malaysia.
  • Assessment Enhancement Committee,  International Islamic University Malaysia.

 Courses Taught:

At the International Islamic University Malaysia (IIUM)

In the Faculty of Engineering of IIUM, the medium of the instructions is English, and the students must present, before they join the University, a score of 550 in the TOEFL or 6.0 points in the test administered by the International English Language Testing Service (IELTS).

 

ECE 2241, Electromagnetic Theory (2005-2008)

 

ECE3242, Transmission Media (2005-2009)

 

ECE 6211, Antenna Engineering  (MSc Program)  (2007-2008)

 

ECE 3231, Telecommunication Principles (2005-2008)

 

ECE 1131, Electric Circuits (2005/2006)

 

My teaching efficiency rating (TER) which represents the feedback of my students was:

Semester I 2005/2006:     3.85/5

Semester II 2005/2006:   4.42/5

Semester I 2006/2007:     85.25%

Semester II 2006/2007:    89%

Semester I 2007/2008 :    83.40%

Semester II 2007/2008:  84.37 %

 

A Full day Short Course:  “A Parallel FDTD with MPI Library and Serial Parallel FDTD Algorithms” at EUCAP 2006 European Conference on Antennas and Propagation, November 6-10, 2006, Nice, France.

 

Supervised the following Final year projects at the International Islamic University Malaysia (IIUM)

“Developing a Computer  Software for RF Design and Antenna Simulation”

“Computer Aided Design of Microstrip Antenna  for Wireless Applications”

“Computer Simulation and Design of Antennas for Tracking Radar System”

“Antenna Design for Wireless Communication”

“Antenna Design for Ultra Wideband Communication”

“Antenna Design for Satellite Communication”

“Design of Ultra Wideband Transceiver”

“Synthetic Aperture  Radar for Imaging Systems”

Acted as a counselor for the International Islamic University Malaysia IEEE Student Branch

 

At 6th October University, Cairo, Egypt.

Instructor “Antenna Theory Analysis&Design”, Fall 2000.

 

At Benha High Institute of  Technology, Egypt,

Lectured as teaching assistant for the following Courses:

Antenna Theory Analysis&Design (1995-1999).

Microwave Devices (1995-1999).

Digital&Logic Circuits in 1995.

 

PUBLICATIONS

 

Refereed Journals:

[1] H. E. Abd-El-Raouf and S. S. Zaheer, “Design of Small Planar Antennas based on Double-Layered CRLH Metamaterials,” Microwave and Optical Technology Letters, Vol.54, No. 10 , October 2012, pp. 2224 – 2229.

[2] H. E. Abd-El-Raouf, Abdi K.H. Obsiye, and Md. Rafiqul Islam, “A Novel Printed Antenna for Ultrawideband RFID (UWB-RFID) Tag,” Microwave and Optical Technology Letters, Vol.52, No. 11 , November 2010, pp. 2528 – 2531.

[3] T. Al-Maznaee and H. E. Abd-El-Raouf, “ Design of Reconfigurable Patch Antenna with a Switchable V-Slot,” Progress In Electromagnetics Research C, Vol. 6, 145-158, 2009.

[3] Z. Elabdin, M. R. Islam, O. O. Khalifa, and H. E. A. Raouf, “Mathematical Model for the Prediction of Microwave Signal attenuation due to Duststorm,”  Progress In Electromagnetics Research M, Vol. 6, 139–153, 2009.

[4] Nuurul Hudaa M. Sobli and Hany E. Abd-El-Raouf, “Design of a Compact Band-Notched Antenna for  Ultrawideband Communication,” Progress In Electromagnetics Research M (PIER M), ), Vol.3,57-78,2008.   [5] Hany E. Abd El-Raouf, Raj Mittra, “A Novel Domain Decomposition Finite Difference Time Domain Scheme Including Multiple Reflections,” Progress In Electromagnetics Research C, Vol. 4, 53–64, 2008. 

[6] Hany E. Abd El-Raouf, Raj Mittra, “Scattering Analysis of Dielectric Coated Cones,” J. of Electromagn. Waves and Appl., Vol. 21, No. 13, 1857–1871, 2007.

[7] Hany E. Abd El-Raouf, Raj Mittra, Ji-Fu Ma, “A new Domain Decomposition FDTD for Solving Large Electromagnetic Problems,” Microwave and Optical Technology Letters, Vol. 48, No. 12, December 2006, pp. 2399-2405.

[8] Raj Mittra, Hany E Abd-El-Raouf,  and Neng-Tien Huang, “A Serial-Parallel FDTD Approach for Modeling of Coupling Between Two Large Arrays”, Applied Computational Electromagnetics Society Journal (ACES), Special Issue on Phased Adaptive Array Antennas, Invited paper, ACES Journal, Vol. 21, No. 3, November 2006, pp.267-275.

[9] H.E.Abd El-Raouf, E.A.El-Diwani, A.Ammar and F.El-Hefnawi, “A Low Dispersion 3D Second-Order in Time Fourth-Order in Space FDTD Scheme (M3d24),”  IEEE Trans.Antennas Propagat., Vol.52, No.7, pp.1638-1646, July 2004.

[10] H.E. Abd El-Raouf, V.V.S. Prakash, J.Yeo and R.Mittra, ” FDTD Simulation of a Microstrip Phased Array with a Coaxial Feed,” IEE Proceedings- Microwaves, Antennas and Propagation., Vol.151, No.3, June 2004, pp.193-198.

[11] H.E. Abd El-Raouf, W.Yu and R.Mittra, ” Application of the Z-transform technique to Modeling Linear Lumped Loads in the FDTD,” IEE Proceedings- Microwaves, Antennas and Propagation., Vol.151, No.1, February 2004, pp.67-70.

[12] H.E. Abd El-Raouf, Lai-Ching Ma, W.Yu and R.Mittra, “Analysis of Microstrip Patch Arrays Using the FDTD Method,” Microwave Optical Tech Lett.,  Vol.36, February 20, 2003, pp.250-254.

[13] H.E.Abd El-Raouf, E.A.El-Diwani, A.Ammar and F.El-Hefnawi, “A FDTD hybrid “” scheme with subgridding for solving large electromagnetic problems,” Applied Computational Electromagnetics Society Journal (ACES), March 2002 issue, vol. 17, no. 1, pp. 23-29.

[14] H.E. Abd El-Raouf, W.Yu, N.Farahat and R.Mittra, “Matched Load Truncation for Feed Line of Patch Antennas in the FDTD Method,” Microwave Optical Tech Lett., November 20, 2001, pp.267-269 .

[15] N. Farahat, H.E. Abd El-Raouf and R.Mittra, ” Analysis of Interconnect lines using the Finite Difference Time Domain (FDTD) Method,”  Microwave Optical Tech Lett., July 5, 2002, pp.6-8.

[16] E.A..El-Diwani, A.Ammar,F.El-Hefnawi and H.E.Abd El-Raouf, “Transient Response of Paraboloidal Reflector Antennas to an Incident Gaussian Impulse and Nuclear EMP,” Journal of Sci.Bull.Fac.Eng.Ain Shams Univ, Vol.36, No.3, pp.231-245, sept. 30, 2001.

[17] K.Montasser, E.Eid, E.El-Diwani, and Abd El-Raouf, “Scattering from dielectric bodies of revolution,” Journal of Sci.Bull.Fac.Eng.Ain Shams Univ, Vol.32, No.1, pp.187-212, Mar 1997.

 Selected Refereed Conferences:

[18] Hany E. Abd-El-Raouf,  eta al., “Design of Double Layered Metamaterial Antenna,”Eucap 2009 3rd European Conference on Antennas and Propagation – 23-27 March 2009 in Berlin, Germany.

[19] Mimi W. Nordin and Hany E. Abd El-Raouf, “Bandwidth Enhancement of a Compact Antenna Based on the Composite Right/Left-Handed (CRLH) Transmission-Line (TL), ,”Eucap 2009 3rd European Conference on Antennas and Propagation – 23-27 March 2009 in Berlin, Germany.

[20] Hany E. Abd El-Raouf and Raj Mittra, “A Novel Domain Decomposition Technique For Finite Methods Applied In The Time Domain,” Invited Paper to: the International Workshop on Finite Elements for Microwave Engineering, May 8-9, 2008, in Bonn, Germany.

[21] Mimi Nordin, Hany E. Abd El-Raouf, and Abubeker A. Yussuf, “Bandwidth Enhancement of a Compact Antenna Based on the Composite Right/Left-Handed (CRLH) Transmission-Line (TL), Proceedings of the Int. Conf. on Computer and Communication Engineering, ICCCE’08, 13-15 May 2008, Kuala Lumpur, Malaysia.

[22] Hany E. Abd-El-Raouf, eta al., “Design of Small Antennas based on DNG Metamaterials,” 2008 IEEE International RF and Microwave Conference, 2-4 December 2008.

[23] Hany E. Abd El-Raouf, “Domain Decomposition Finite-Difference Time Domain Considering Multiple Reflections,” 2008 IEEE International Symposium on Antennas and Propagation, San Diego, July 5-12 2008.

 

[24] N. H. M. Sobli and H. E. Abd-El-Raouf, “Design of a Compact Band-Notched Antenna for Ultrawideband Communication,” 2008 IEEE International Symposium on Antennas and Propagation, San Diego, July 5-12 2008.

 

[25]  Hany E. Abd-El-Raouf  and Esam A.El-Diwani,” Application of the FDTD Hybrid “M3d24-Yee” for Simulating EM Scattering from Two Objects Separated by Long Distances,” 2007 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting (AP-S’07), Honolulu, Hawaii, June 10-15, 2007.

 

[26] Hany Essam AbdEl-Raouf and  Raj Mittra, ” Scattering Center Analysis of Dielectric Coated Cones, ” EUCAP 2006 European Conference on Antennas and Propagation, November 6-10, 2006, Nice, France.

 

[27] Mimi Aminah, Nurfaridah Saman, and Hany E. Abd El-Raouf, ” Simulation and Design of Wide-Band Patch Antennas for Wireless Technology, ” EUCAP 2006 European Conference on Antennas and Propagation, November 6-10, 2006, Nice, France.

 

[28] Hany E. Abd El-Raouf, ” A Class of Finite Difference Time Domain (FDTD) Techniques for Solving Large Electromagnetic Structures ,” 2006 International RF and Microwave Conference Proceedings, September 12-14, 2006, Putrajaya, Malaysia.

 

[29] Hany E. Abd El-Raouf, “Design of a Millimeter Wave Imaging System for moving Targets,” Proceedings of the Int. Conf. on Computer and Communication Engineering, ICCCE’06 Vol. II, 9-11 May 2006, Kuala Lumpur, Malaysia, pp.897-900.

[30] Md Rafiqul Islam, Hany E. Abd El-Raouf, Feisal Aden, Fouad Abdi Llahi Barreh, Design and Simulation of Linear Adaptive Antenna Array for Mobile Base Station, Proceedings of the Int. Conf. on Computer and Communication Engineering, ICCCE’06 Vol. II, 9-11 May 2006, Kuala Lumpur, Malaysia, pp.682-688.

[31]  Hany E. Abd El-Raouf, “A New Domain Decomposition FDTD Technique for Simulating Electromagnetic Penetration into Buildings, ” 2005 Asia-Pacific Conference on Applied Electromagnetics, Dec. 20-21, 2005, Johor Bahru, Johor, Malaysia.

[32] Lai-Ching Ma, W.Yu, H.E. Abd El-Raouf, ” Electromagnetic Modeling of Objects with Curved Edges and Surfaces using the Conformal FDTD,” IEEE AP-S International Symposium, Columbus, OH, Vol. 3, pp. 758-761, June 2003.

[33] H.E.Abd El-Raouf, E.A..El-Diwani, A.Ammar and F.El-Hefnawi, “A modified 3D fourth order FDTD algorithm  for improving phase accuracy with low resolution,” IEEE Antennas and Propagation Society International Symposium 1999, pp.196-199, July 1999.

 

[34] E.A..El-Diwani, A.Ammar,F.El-Hefnawi,and H.E.Abd El-Raouf, ” Transient Response of Paraboloidal Reflector Antennas to an Incident Gaussian Impulse and Nuclear EMP,” 14th National Radio Science Conference, March 23-25, 1997, Cairo University-Egypt,  pp B10: 1-14.

 

[35] H.E.Abd El-Raouf, E.A..El-Diwani, A.Ammar and F.El-Hefnawi, ” A FDTD hybrid “” scheme with subgridding for solving large electromagnetic problems,” Al-Azhar Engineering sixth International Conference, Sept 1-4, 2000.

 

[36] E.Eid, E.El-Diwani, and H.E. Abd El-Raouf, “Radiation from dielectric rod and cone antennas,” Twelfth national Radio Science Conference, Alexandria, Egypt, Mar 1995.

 

[37] E.Eid, E.El-Diwani, and Abd El-Raouf, “The monopole antenna above a finite circular disk of arbitrary thichness,” Al-Azhar Engineering third international conference, pp.181-194, Dec 1994.

 

[38] E.Eid, E.El-Diwani, and H.E. Abd El-Raouf, “The Monopole Antenna above a Finite Disk with Circular Cross Section,” Instrumentation and Measurement Technology Conference IEEE, Hamamatsu, Japan, May 1994.

 

[39] H.E. Abd El-Raouf and R.Mittra, “An FDTD-Based Domain Decomposition Approach to the Solution of Coupling
Problem Between Two Arrays,”  IEEE Antennas & Propagation Society International Symposium/URSI, Monotery, California, June. 2004.

[40] H.E. Abd El-Raouf and R.Mittra, “A new Domain Decomposition Approach for Solving Large Problems Using the FDTD,”  IEEE Antennas & Propagation Society International Symposium/URSI, Monotery, California, June. 2004.

 Selected Abstracts

[1] Hany Essam AbdEl-Raouf, Raj Mittra, Ji-Fu Ma, “Solving Very Large EM Problems (109 DoFs or Greater) Using the MPI-CBFDTD Method,” 2005 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting (AP-S’05), July 3-8, 2005 , Washington DC .

[2] Mittra, Raj; Abd-El-Raouf,  Hany E.; Huang, Neng-Tien, “ A Novel Time Domain Approach for Modeling the Coupling Problem between Two Large Arrays Mounted on a Complex Platform and Separated by a Large Distance”, the 8th International Workshop on Finite Elements for Microwave Engineering, 25-26 May 2006, Spier Wine Estate, Stellenbosch, South Africa.

[3] H.E. Abd El-Raouf and R.Mittra, “A Novel Longitudinal-section FDTD algorithm for Simulating Large-size  Electromagnetic Compatibility and Interference (EMC/EMI) Problems,” IEEE Antennas & Propagation Society International Symposium/URSI, Columbus, OH, June 2003.

[4] H.E. Abd El-Raouf and R.Mittra, “Visulaization  of the induced Currents on a Dielectric-Coated Cone Using FDTD,” IEEE Antennas & Propagation Society International Symposium/URSI, San Antonio, TX,   Vol. 3, pp. 312, June 2002. [S].