Publications
Book Chapters:
1. A.C. Cangellaris and R. Lee, “Solution of the two-dimensional Helmholtz equation using the bymoment method,” Integral Methods in Science and Engineering-90, pp. 249-259, 1991.
2. R. Lee and A.C. Cangellaris, “Scattering from an arbitrary cylinder in the presence of a parallel planar media interface using the bymoment method,” Progress in Electromagnetic Research, Vol. 4, Elsevier Science Pub., pp. 345-372, 1991.
Papers in Refereed Journals:
1989
1. R. Lee, D.G. Dudley, and K.F. Casey, “Electromagnetic coupling by a wire through a circular aperture in an infinite planar screen,” J. of Electromagnetic Waves and Applications, Vol.3, No.4, pp. 281-305, 1989.
1990
2. R. Lee and D.G. Dudley, “Transient current propagation along a wire penetrating a circular aperture in an infinite planar conducting screen,“ IEEE Trans. on Electromag. Compatibility, Vol. 32, No. 2, pp. 137-143, May 1990.
3. D.B. Wright, R. Lee, and D.G. Dudley, “Transient current on a wire penetrating a cavity-backed circular aperture in an infinite screen,” IEEE Trans. on Electromag. Compatability, Vol. 32, No. 3, pp. 197-204, August 1990.
4. A.C. Cangellaris and R. Lee, “The bymoment method for two-dimensional electromagnetic scattering,” IEEE Trans.Antennas and Propagat., AP-38, pp. 1429-1437, September 1990.
5. R. Lee and A.C. Cangellaris, “Application of the bymoment method to electromagnetic scattering from multiple cylinders,” Radio Science, Vol. 25,No. 5, pp. 731-741, September 1990.
1991
6. A.C. Cangellaris and R. Lee, “Finite element analysis of electromagnetic scattering from inhomogeneous cylinders at oblique incidence,” IEEE Trans. Antennas and Propagat., AP-39, pp. 645-650, May 1991.
1992
7. D.B. Wright, R. Lee, D.G. Dudley, and K.F. Casey, “Scattering from a cavity-backed circular aperture penetrated by a wire,” IEEE Trans. Electromag. Compatability., Vol. 34, No. 2, pp. 133-136 May 1992.
8. R. Lee and A.C. Cangellaris, “A study of discretization error in the finite element approximation of wave solutions,” IEEE Trans. Antennas and Propagat., AP-40,pp.~542-549, May 1992.
9. A.C. Cangellaris and R. Lee, “On the accuracy of numerical wave simulations based on finite methods,'' J. of Electromagnetic Waves and Applications, vol. 6,no. 12, pp.1635-1653, 1992.
1993
10. R. Lee and T.T. Chia, “Analysis of electromagnetic scattering from a cavity with a complex termination by means of a hybrid ray-FDTD method,” IEEE Trans. Antennas Propagat., AP-41, pp. 1560-1569, Nov. 1993.
1994
11. R. Lee and V. Chupongstimun, “A partitioning technique for the finite element solution of electromagnetic scattering from electrically large dielectric cylinders,” IEEE Trans. Antennas Propagat., AP-42, pp. 737-741, May 1994.
12. J.O.
Jevtic and R. Lee, “On the choice of metrons in the MEI method,'' COMPEL -- Int.
Journal Comp. and Math. in Electrical and Electronic
13. J.O. Jevtic and R. Lee, ``A theoretical and numerical analysis of the measured equation of invariance,” IEEE Trans. Antennas Propagat., AP-42, pp. 1097-1105, August 1994.
14. W.P. Pinello, R. Lee, and A.C. Cangellaris, “Finite element modeling of electromagnetic wave interactions with periodic structures,” IEEE Trans. Microwave Theory and Techniques, MTT-42, pp. 2294-2301, December 1994.
1995
15. U. Pekel and R. Lee, “An a posteriori error reduction scheme for the three dimensional finite element solution of Maxwell's equations,'” IEEE Trans. Microwave Theory and Techniques, MTT-43, pp. 421-427, February 1995.
16. J.O. Jevtic and R. Lee, “How invariant is the measured equation of invariance?,'' IEEE Microwave and Guided Wave Letters, Vol. 5, pp. 45-47, February 1995.
17. L. Hamandi, R. Lee, and F. Ozguner, “Review of domain decomposition methods for the implementation of FEM on massively parallel computers,” IEEE Antennas and Propagation Magazine, February, 1995.
18. A. Bataineh, R. Lee, and F. Ozguner, “Electrical characterization of high-speed interconnects with a parallel three-dimensional finite difference time-domain algorithm,” SIMULATION, Vol. 64, pp. 289-295, May 1995.
19. T.L. Barkdoll and R. Lee, “Finite element analysis of bodies of revolution using the measured equation of invariance,” Radio Science, Vol. 30, No. 4, pp. 803-815 July/August 1995.
20. U. Pekel and R.~Lee, “A 3-D application of the bymoment method for electromagnetic scattering,” Journal of Electromagnetic Waves and Application, Vol. 9, pp. 973-992, July/August 1995.
21. T.T. Chia, R.J. Burkholder and R. Lee, “The application of FDTD in hybrid methods for cavity scattering analysis,” IEEE Trans. Antennas and Propagat., AP-43, pp.1082-1090, October 1995.
22. J.O. Jevtic and R. Lee, “An analytic characterization of the error in the measured equation of invariance,” IEEE Trans. Antennas and Propagat., AP-43, pp. 1109-1115, October 1995.
23. Z.S. Sacks, D.M. Kingsland, R. Lee, and J.F. Lee, “A perfectly matched anisotropic absorber for use as an absorbing boundary condition,” IEEE Trans. Antennas and Propagat., AP-43, pp. 1460-1463, December 1995.
1996
24. J.W. Nehrbass, J.F. Lee, and R. Lee, “Stability analysis for perfectly matched layer absorber,” Electromagnetics, Vol. 16, pp. 385-397, July/August 1996.
25. R. Lee, Z. Chen, J.O. Jevtic, and J.F. Lee, ``Important considerations in the evaluation of absorbing boundary conditions,'' Electromagnetics, Vol. 16, pp.417-433, July/August 1996.
26. J.O. Jevtic and R. Lee, “Solenoidal edge elements,” Radio Science, pp. 977-990, July/August 1996.
27. Y.S. Choi-Grogan, K. Eswar, P. Sadayappan, and R. Lee, “Sequential and parallel implementations of a partitioning finite element method,” IEEE Trans. Antennas and Propagat., AP-44, pp. 1609-1616, Dec. 1996.
1997
28. J.Y. Wu, D.M. Kingsland, J.F. Lee, and R. Lee, “A comparison of anisotropic PML to Berenger's PML and its application to the finite element method for EM scattering,” IEEE Trans. Antennas and Propagat., AP-45, pp. 40-50, Jan. 1997.
29. J.F. Lee, R. Lee, and A.C. Cangellaris, “Time domain finite element methods,” IEEE Trans. Antennas and Propagat., AP-45, pp. 430-442, March 1997.
30. J.Y. Wu and R. Lee, “The advantages of triangular and tetrahedral edge elements for electromagnetic modeling with the finite element method,” IEEE Trans.Antennas and Propagat., AP-45, pp. 1431-1437. Sept. 1997.
1998
31. J.W. Nehrbass, J.O. Jevtic, and R. Lee, “Reducing the phase error in finite difference methods without increasing the order,” IEEE Trans. Antennas and Propagat., AP-46, pp. 1194-1201, August 1998.
1999
32. K. Rama Rao, J.W. Nehrbass, and R. Lee, ``Discretization errors in finite methods: issues and possible solutions,” Computer Methods in Applied Mechanics and Engineering, Vol. 169, pp. 219-236, 1999.
33. K. Rama Rao and R. Lee, ``An optimal edge based finite difference solution to the vector Helmholtz equation in two dimensions,” IEEE Trans. Magnetics, Vol. 35, pp. 1462-1465, May 1999.
34. E.M. Nassar, R. Lee, and J.D. Young, “A probe for determining the material properties of sea ice,” IEEE Trans. Antennas and Propagat., AP-47, pp.1085-1093, June 1999.
35. Y. Zhu and R. Lee, “TVFEM analysis of periodic structures for radiation and scattering,” Journal of Electromagnetics Waves and Applications, Vol. 13, pp. 1679-1680, 1999.
36. A. Kangarlu, B.A. Baertlein, R. Lee, T. Ibrahim, L. Yang, A.M. Abduljalil, and P.M.L. Robitaille, “Dielectric resonance phenomena in ultra high field MRI,'' Journal of Computer Assisted Tomography, Vol. 23, pp. 821-831, November/December 1999.
2000
37. J.Y. Wu, J.W. Nehrbass, and R. Lee, “A comparison of PML for TVFEM and FDTD,” Int. Journal of Numerical Modeling Electronics, Vol. 13, pp. 233-244, March-June 2000.
38. R.D. Slone and R. Lee, “Applying Pade via Lanczos to the finite element method for electromagnetic radiation problems,” Radio Science, Vol. 35, pp. 331-340, March-April 2000.
39. B.A. Baertlein, O. Ozbay, T.S. Ibrahim, R. Lee, Y. Yu, A. Kangarlu, and P.M.L. Robitaille, “Theoretical model for a MRI radio frequency resonator,” IEEE Trans. Biomedical Engineering, Vol. 47, pp. 535-546, April 2000.
40. E.M. Nassar, J.T. Johnson, and R. Lee, “A numerical model for electromagnetic scattering from sea ice,” IEEE Trans. Geoscience and Remote Sensing, Vol. 38, pp. 1309-1319, May 2000.
41. J.W. Nehrbass and R. Lee, ``Optimal finite difference sub-gridding techniques applied to the Helmholtz equation,” IEEE Trans. Microwave Theory Tech., MTT-48, pp. 976-984, June 2000
42. T.S. Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, P.M.L. Robitaille, “Application of finite difference time domain method for the design of birdcage RF head coils using multiport excitations,” Magnetic Resonance Imaging, Vol. 18, pp. 733-742, July 2000.
43. T.S. Ibrahim, R. Lee, B.A. Baertlein, Y. Yu, and P.M.L. Robitaille, “Computational analysis of the high pass birdcage resonator: Finite difference time domain simulations for high-field MRI,” Magnetic Resonance Imaging, Vol. 18, pp. 835-843, Sept. 2000.
2001
44. T. S. Ibrahim, R. Lee, B. A. Baertlein, and P.-M. L. Robitaille, ``B_1 Field Homogeneity and SAR Calculations in the High Pass Birdcage Coil,'' Physics in Medicine and Biology, Vol. 46, pp. 609-619, February 2001.
45. T. S. Ibrahim, R. Lee, A. M. Abduljalil, B. A. Baertlein, A. Kangarlu, R. Gilbert, and P.-M. L. Robitaille, ``Dielectric resonances in UHFMRI: Computational Analysis and Experimental Findings,'' Magnetic Resonance Imaging, Vol. 19, pp. 219-226, Feb. 2001.
46. T. S. Ibrahim, R. Lee, A. M. Abduljalil, B. A. Baertlein, and P.-M. L. Robitaille, ``Calculations of EM interactions with biological tissue: Magnetic resonance imaging at ultra high field,'' Applied Computational Electromagnetics Journal, Vol. 16, pp. 138-144, 2001.
47. C. C. Chen, K. Rama Rao, and R. Lee, ``A Tapered-permittivity rod antenna for ground penetrating radar applications,'' J. Applied Geophysics, Vol. 47, pp. 309-316, July 2001.
48. R.
D, Slone, R. Lee, and J. F. Lee, ``
49. T. S. Ibrahim, A. M. Abduljalil, B. A. Baertlein, R. Lee, and P. M. L. Robitaille, “Analysis of B-1 field profiles and SAR values for multi-strut transverse electromagnetic RF coils in high field MRI applications,” Physics in Medicine and Biology, Vol. 46, pp. 2545-2555 Oct. 2001.
50. T. S. Ibrahim, R. Lee, and PML. Robitaille, “Effect of RF coil excitation on field inhomogeneity at ultra high fields: a field optimized TEM resonator”, Magnetic Resonance Imaging, Vol. 19, pp. 1339-1347, December 2001.
2002
51. R.D. Slone, J.F. Lee, and R. Lee, ``Automating multipoint Galerkin asymptotic waveform evaluation for a finite element fast frequency sweep,'' IEEE Trans. Magnetics, Vol. 38, pp. 637-640, March 2002.
52. R.D. Slone, J.F. Lee and R. Lee, ``A comparison of some model order reduction techniques,'' Electromagnetics, Vol. 22, pp. 275-289, May-June 2002.
53. S.M Wang, F.L. Teixeira, R. Lee, and J.F. Lee, ``Optimization of subgridding schemes for FDTD,'' IEEE Microwave and Wireless Component Letters, Vol. 12, pp. 223-225, June 2002.
54. Y. Srisukh, J. Nehrbass, F.L. Teixeira, J.F. Lee. and R. Lee, “An approach for automatic grid generation in three-dimensional FDTD simulations of complex geometries,” IEEE Ant Propagat. Mag., Vol. 44, pp.75-80, 2002.
2003
55. C. Chen, K. Rama Rao, and R. Lee, “A new ultrawide-bandwidth dielectric-rod antenna for ground-penetrating radar applications,” IEEE Tran. Antenna Propagat., AP-51, pp. 371-377, March 2003.
56. S.C. Lee, J.F. Lee, and R. Lee, “Hierarchical vector finite elements for analyzing waveguiding structures” IEEE Tran. Microwave Theory, MTT-51, pp. 1897-1905, August 2003.
57. J.
F. Lee, R. Lee, and R. J. Burkholder, “
58. R. D. Slone, R. Lee, and J.F. Lee, “Well-conditioned asymptotic waveform evaluation for finite elements,” IEEE Tran Antenna Propagat., AP-51, pp. 2442-2447, Sep. 2003.
59. R. D. Slone, R. Lee, and J.F. Lee, “Broadband
model order reduction of polynomial matrix equations using single-point
well-conditioned asymptotic waveform evaluation: derivations and theory”, Int.
J. Numer. Meth.
2004
60. N. V. Venkatarayalu, C. C. Chen, F. L. Teixeira, and R. Lee, “Numerical modeling of ultrawide-band dielectric horn antennas using FDTD,” IEEE Tran. Antennas Propagat., Vol. 52, pp. 1318-1323, May 2004.
61. J. F. Lee, R. Lee, and F. Teixeira, “Hierarchical vector finite elements with p-type non-overlapping Schwarz Method for modeling waveguide discontinuities,” CMES-COMP MODEL ENG 5 (5): 423-434 May 2004
62. K. H. Lee, C. C. Chen, F. L. Teixeira, and R. Lee, “Modeling and investigation of a geometrically complex UWB GPR antenna using FDTD,” IEEE Tran. Antennas Propagat., Vol. 52, pp. 1983-1991, Aug. 2004.
2005
63. S. M. Wang, R. Lee, and F. L. Teixeira, “Implicit nonstaggered finite-difference time-domain method,” Microwave and Optical Tech. Letters, Vol 45, pp. 317-319, May 2005
64. K. H. Lee, C. C. Chen, and R. Lee, ”Novel dual-polarized tapered-chamber feed design concepts,” IEEE Antennas and Propagation Magazine, Vol. 47, pp. 214-218, August 2005.
65. T. S. Ibrahim, C. Mitchell, P. Schmalbrock, R. Lee, and D. W. Chakeres, “Electromagnetic perspective on the operation of RF coils at 1.5-11.7 Tesla,” Magnetic Resonance in Medicine, Vol. 54, pp. 683-690, Sept. 2005.
2006
66. R. A. Chilton and R. Lee, “Chirping unit cell length to increase frozen mode bandwidth in non-reciprocal magnetic photonic crystals,” IEEE Trans. Microwave Theory Tech., Vol 54, pp. 473-480, Jan. 2006.
67. S. Wang, R. Lee, and F. L. Teixeira, “Anisotropic-medium PML for vector FETD with modified basis functions,” IEEE Trans. Antennas and Propagat., Vol. 54, pp. 20-27, Jan. 2006.
68. R. Lee, “A note on mass lumping in the finite element time domain method,” IEEE Trans. Antennas and Propagat, Vol. 54, pp. 760-762, Feb. 2006.
69. T.S.
Ibrahim and R. Lee, “Evaluation of MRI RF probes utilizing infrared sensors,”
IEEE Trans. Biomedical
Proceedings in Conference:
1989
1. A.C.
Cangellaris and R. Lee, “A finite-element method for solving electromagnetic
scattering problems,” IEEE Antennas Propagat. Symp. Digest,
1992
2. W.
Pinello and R. Lee, “A finite element solution for electromagnetic scattering
from an infinite periodic grating,” IEEE Antennas Propagat. Symp. Digest,
1993
3. R.
Lee and T.T. Chia, “A hybrid ray/FDTD method for computing electromagnetic
scattering from an engine cavity with a complex termination,” 9th Annual Review
of Progress in Applied Computational Electromagnetics,
1994
4. Y.S. Choi-Grogan, R. Lee, K. Eswar, and P. Sadayappan, “The performance of a partitioning finite element method on the Touchstone Delta,” 10th Annual Review of Progress in Applied Computational Electromagnetics, Monterey, CA, March 1994.
5. A.
Bataineh, R. Lee, and F. Ozguner, “Electrical characterization of high-speed
interconnects with a parallel three-dimensional finite difference time-domain
algorithm,” High Performance Computing '94,
6. R.
Lee and J.O. Jevtic, “Several approaches to improving the solution in the
measured equation of invariance,” IEEE Antennas Propagat. Symp. Digest,
7. L.
Hamandi, R. Lee, and F. Ozguner, “A domain decomposition technique for the
parallel solution of linear systems of equations resulting from finite element
discretization,” International Conference on Electronic Circuits and Systems,
1995
8. L.
Hamandi, F. Ozguner, and R. Lee, “The performance of the parallel solution of
the Quasi-Minimal Residual (QMR) method for 2D mesh architectures,” 11th Annual
Review of Progress in Applied Computational Electromagnetics,
1996
9. R.
Lee, ``An overview of numerical dispersion error in PDE methods for
electromagnetics,” 12th Annual Review of Progress in Applied Computational
Electromagnetics,
10. Z.
Chen and R. Lee, “Adaptive mesh refinement concepts for electromagnetics,” 12th
Annual Review of Progress in Applied Computational Electromagnetics,
11. J.
Nehrbass and R. Lee, “Stability analysis for perfectly matched absorbers,''
Joint AP-S Symposium and URSI Radio Science Meeting,
1998
12. T.S. Ibrahim, Y. Yu, R. Lee, B.A. Baertlein, A. Kangarlu, and P.~Robitaille, “Finite difference time domain simulations for high-field MRI,” Proc. ISMRM 6th Annual Meeting of International Society of Magnetic Resonance in Medicine, Sydney, Australia, April 1998.
13. T.S. Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, and P.M.L. Robitaille, “Magnetic field homogeneity and SAR issues for high-field MRI,” Proc. ISMRM 6th Annual Meeting of International Society of Magnetic Resonance in Medicine, Sydney, Australia, April 1998.
14. B.A. Baertlein, O. Ozbay, T.S. Ibrahim, Y. Yu, X. Zang, R. Lee, A. Kangarlu, and P.M.L. Robitaille, “Theoretical model of the MRI TEM resonator,'' Proc. ISMRM 6th Annual Meeting of International Society of Magnetic Resonance in Medicine, Sydney, Australia, April 1998.
1999
15. T.S. Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, and P.M.L. Robitaille, “SAR and B_1 field homogeneity study at high-field MRI: 3T-9T,” Proc. ISMRM 7th Annual Meeting of International Society of Magnetic Resonance in Medicine, Philadelphia, PA, May 1999.
16. T.S.
Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, and P.M.L. Robitaille,
“Comparison between linear, quadrature, and 4-port excitations from 1.5 T to
4.7 T,” Proc. ISMRM 7th Annual Meeting
of International Society of Magnetic Resonance in Medicine,
17. T.S. Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, and P.M.L. Robitaille, “On the physical feasibility of achieving linear polarization at high field: A study of the birdcage coil,” Proc. ISMRM 7th Annual Meeting of International Society of Magnetic Resonance in Medicine, Philadelphia, PA, May 1999.
18. T.S. Ibrahim, R. Lee, B.A. Baertlein, A. Kangarlu, and P.M.L. Robitaille, “3-Dimensional full wave analysis for MRI RF coils,” Proc. ISMRM 7th Annual Meeting of International Society of Magnetic Resonance in Medicine, Philadelphia, PA, May 1999.
19. R. Burgess, L. Yang, X. Zhang, T.S. Ibrahim, B.A. Baertlein, R. Lee, A.M. Abduljalil, A. Kangarlu, P.M.L. Robitaille, “Human Imaging at 8 Tesla,” Proc. ISMRM 7th Annual Meeting of International Society of Magnetic Resonance in Medicine, Philadelphia, PA, May 1999.
20. A. Kangarlu, L. Yang, B.A. Baertlein, A.M. Abduljalil, X. Zhang, T.S. Ibrahim, Y. Yu, R. Lee, and P.M.L. Robitaille, “Ana