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Veröffentlichungen 1998

  1. N. Geng, W. Wiesbeck, Planungsmethoden für die Mobilkommunikationstechnik - Funknetzplanung unter realen physikalischen Ausbreitungsbedingungen, Springer-Verlag, Berlin, Heidelberg, 1998
  2. W. Berner, M. Braun, R. Kretzschmann, F. Küchen, F. Schmehr, Netzplanung und Kosten von DVB-T, Schriftreihe der Landesanstalt für Kommunikation Baden-Württemberg (LfK) Band 8, 220 Seiten, Vistas, Berlin, 1999, ISBN-Nr.:3-89158-244-7
  3. D. J. Cichon, T. Kürner, "Propagation prediction models" in COST Telecommunications — Digital mobile radio towards future generation systems, final report, ed. E. Damosso, European Communities, 1999, ISBN 92-828-5416-7
  4. F. Küchen, D. Didascalou, W. Wiesbeck "Vorhersage und Messung der Bitfehlerrate in urbanen Gleichwellennetzen", Tagungsband des FMS-Projekttags "Messung und Modellierung von Funkkanälen" am 03.12.1998, ISBN 3-922308-84-8, 1999
  5. D. Didascalou, F. Küchen, W. Wiesbeck "Strahlenoptische Wellenausbreitungsmodellierung in Tunnels", Tagungsband des FMS-Projekttags "Messung und Modellierung von Funkkanälen" am 03.12.1998, ISBN 3-922308-84-8, 1999
  6. N. Geng, L. Carin, "On the low-frequency natural response of conducting and permeable targets," IEEE Trans. Geos. and Remote Sensing, vol.37, no.1, pp.347—359, Jan.1999
  7. L. Carin, N. Geng, M. McClure, J. Sichina, L. Nguyen, "Ultra-wideband synthetic aperture radar for mine field detection," IEEE Ant. and Prop. Magazine, vol.41, no.1, pp.18—33, Feb.1999
  8. T. C. Becker, F. Küchen, W. Wiesbeck, "A new network planning approach for digital audio broadcasting," IEEE Trans. Vehicular Technology, vol.48, no.2, pp.619—626, March 1999
  9. M. Döttling, W. Wiesbeck, "A hierarchical electromagnetic land use parameter data base for wave propagation modeling," IEEE Geoscience and Remote Sensing Newsletter, Issue #109, March, 1999, pp. 6-10
  10. J. v.Hagen, R. Mittra, R. Werner, "MMSNEC - multiple matrix solver NEC," 15th Annula Review of Progress in Applied Computational Electromagnetics ACES, Monterey, California, USA, March 15-20, 1999, pp.428-435
  11. D. Löffler, W. Wiesbeck, "Conformal Aperture Coupled Microstrip Patch Antennas on Cylindrical Surfaces for Radar and SDMA Applications," ACES'99 - 15th Annual Review of Progress in Applied Computational Electromagnetics, Monterey, California, USA, March 15-20, 1999, pp.484-489
  12. N. Geng, L. Carin, "Wideband electromagnetic scattering from a dielectric BOR buried in a layered lossy, dispersive medium," IEEE Trans. Ant. and Prop., vol.47, no.4, pp.610—619, April 1999
  13. M. Döttling, S. Saunders, "Bit error rate calculation for satellite communication systems", Proc. COST Joint International Workshop COST252, COST253, COST255, Toulouse, France, 1999. pp. 51-55
  14. M. Döttling, T. Zwick, W. Wiesbeck, "Investigation of satellite diversity and handover strategies in land mobile satellite systems based on a ray tracing propagation model," Proc. Int. Mobile Satellite Conf. IMSC'99, Ottawa, Canada, 1999, pp. 128-133
  15. J. v.Hagen, D.H. Werner, R. Mittra, "Polarization selective surfaces composed of trefoil knot elements," Microwave and Optical Technology Letters, vol.21, , pp.170-173, May 1999
  16. C. Fischer, W. Wiesbeck, A. Moreira, "Versatile receiver subsystem with digital beamforming on receive only", Proc. 5th International Conference on Radar Systems, Brest, France, May 18-20, 1999, Poster Session
  17. N. Geng, A. Sullivan, L. Carin, "Fast multipole method for scattering from 3D PEC targets situated in a half-space environment," Microwave and Optical Technology Letters, vol.21, no.6, pp.399—405, June1999
  18. N. Geng, A. Sullivan, L. Carin, "Fast multipole method for scattering from an arbitrary perfectly conducting target above or below a lossy half space," Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June 1999
  19. C. Fischer, K. Schmitt and W. Wiesbeck, "3-D interferometric SAR algorithm for discontinuous distributed objects", Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June1999, pp. 1534-1536
  20. D. Didascalou, M. Younis and W. Wiesbeck, "Millimeter wave scattering and attenuation in limited vegetation structures," Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June1999, pp. 1835-1838
  21. W. Wiesbeck and C. Fischer, "New SAR system configuration for detection of buried objects", Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June1999, pp. 2471-2473
  22. M. Younis, W. Wiesbeck, "SAR with digital beamforming on receive only," Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June 1999, pp. 1773-1775
  23. S. Dai, W. Wiesbeck, "The imaging mode of forward looking SAR with two receiving antennas," Proc. Int. Geoscience and Remote Sensing Symp. IGARSS 99, Hamburg, Germany, June1999, pp.1776-1778
  24. E. Gschwendtner, D. Löffler, Y. Venot, "Low cost antenna subarrays for future base stations with SDMA capability," COST260-Workshop on Smart Antennas, Wroclaw, Poland, June 1999
  25. N. Geng, L. Carin, "Short-pulse electromagnetic scattering from arbitrarily oriented subsurface ordnance," IEEE Trans. Geos. and Remote Sensing, vol.37, no.4, pp.2111—2113, July 1999
  26. J. v.Hagen, P. Werner, R. Mittra, D.H. Werner, "Toward the synthesis of an artificial magnetic medium," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp.430-433
  27. E. Gschwendtner, J. Parlebas, W. Wiesbeck, "Spiral antenna with frequency-independent coplanar feed for mobile communication systems," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp.560-563
  28. D. Löffler, W. Wiesbeck, B. Johannisson, "Conformal aperture coupled microstrip phased array on a cylindrical surface," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp. 882-885
  29. J. v.Hagen, R. Mittra, D.H. Werner, "MoM analysis of polarization selective surfaces usinf trefoil knot arrays," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp.1202-1205
  30. D. Löffler, E. Gschwendtner, W. Wiesbeck, "Aperture coupling versus connectors for the transition between T/R-modules and radiators in large phased arrays," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp. 2770-2773
  31. N. Geng, L. Carin, "Fast multipole method for targets above or buried in lossy soil," Proc. IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July1999
  32. W. J. Eberwein, Y. Rahmat-Samii, "Design and characterization of diagonal horn antennas using UCLA bi-polar near-field measurement and imaging facilities," IEEE Int. Symposium on Antennas and Propagation AP-S'99, Orlando, Florida, USA, July 11-16, 1999, pp. 1818-1821
  33. D. Löffler, E. Gschwendtner, W. Wiesbeck, "Modelling of a conformal high gain satellite antenna with full spherical coverage," USNC/URSI Radio Science Meeting, Orlando, Florida, USA, July 11-16, 1999, p. 349
  34. D. Didascalou, N. Geng and W. Wiesbeck, "Ray Optical Wave Propagation Modelling in Curved Tunnels," XXVIth URSI General Assembly, Toronto, Canada, , August 1999, pp. 148
  35. F. Küchen, D. Didascalou, W. Wiesbeck, "Vorhersage und Messung der Bitfehlerrate in COFDM-Gleichwellennetzen," Frequenz, vol 53, no.7-8, July/Aug, pp.138-145, 1999
  36. D. Löffler, W. Wiesbeck, "RF interconnects based on electromagnetic coupling for the transition between components in highly integrated SAR-systems," Frequenz, vol 53, no. 7-8, July/Aug, pp.146-150, 1999
  37. N. Geng, D.R. Jackson, L. Carin, "On the resonances of a dielectric BOR buried in a dispersive layered medium," IEEE Transactions on Antennas and Propagation, vol.47, no.8, pp. 1305-1313, Aug. 1999
  38. N. Geng, M.A. Ressler, L. Carin, "Wide-band VHF scattering from a trihedral reflector situated above a lossy dispersive halfspace," IEEE Trans. on Geoscience and Remote Sensing, vol. 37, no. 5, pp. 2609-2617, Sept 1999
  39. D. Löffler, W. Wiesbeck, "Low cost X-polarised broadband PCS antenna with low cross-polarisation level," Electronics Letters, vol. 35, no. 20, September, 1999, pp.1689-1691
  40. D. Didascalou, F. Küchen, W. Wiesbeck, "Ein neuartiges Normierungsverfahren für die strahlenoptische Wellenausbreitungsmodellierung in beliebig geformten Tunneln," Frequenz, vol. 53, no. 9-10, Sept./Oct., pp.182-188, 1999
  41. R. Schertlen, Y. Venot, C. Stenzel, W. Schwieger, W. Grill, R. Herrmann, M. Schmachtl, H. Toufar, J. Caro, "An applicator for homogeneous and gradient heating of high lossy dielectric zeolites", 7th International Conference on Microwave and High Frequency Heating, Valencia, Spain, Sept. 13-17, 1999, pp. 161-164
  42. J. Haala, W. Wiesbeck, "A new hybrid method combining finite-differences and ray-optical algorithms for modeling thermal processes including radiative and conductive heat transfer," 7th International Conference on Microwave and High Frequency Heating, Valencia, Spain, Sept. 13-17, 1999, pp. 197-200
  43. D. Löffler, W. Wiesbeck, "Von Phased-Array Antennen für weltraumgestütztes SAR zu SDMA-Basisstationsantennen für den Mobilfunk," DLR-Symposium - Chancen für den Technologietransfer aus der Raumfahrt, Bonn, Germany, September 16-17, 1999
  44. D. Didascalou, F. Küchen and W. Wiesbeck, "Wave propagation in curved tunnels: modelling and measurements," Proc. ICEAA 99 - International Conference on Electromagnetics in Advanced Applications, Torino, Italy, September 13-17, 1999, pp. 89-92
  45. D. Löffler, E. Gschwendtner, W. Wiesbeck, "Conformal high gain spacecraft antenna with full spherical coverage," Proc. ICEAA 99 - International Conference on Electromagnetics in Advanced Applications, Torino, Italy, September 13-17, 1999, pp. 421-424
  46. D. Didascalou, M. Döttling, T. Zwick and W. Wiesbeck, "A novel ray optical approach to model wave propagation in curved tunnels," Proc. IEEE Vehicular Technology Conference VTC'99 Fall, Amsterdam, The Netherlands, Sept. 20-22, 1999, pp. 2313-2317
  47. M. Döttling, D. Didascalou, W. Wiesbeck, "Wideband channel modeling and diversity techniques for satellite-UMTS," Proc. IEEE Vehicular Technology Conference VTC'99 Fall, Amsterdam, The Netherlands, Sept. 20-22, 1999, pp. 2770-2774
  48. T. Zwick, D. Didascalou, M. Döttling, W. Wiesbeck, "Spatial radio channel modeling for the design of new generation mobile communication systems," Proc. IEEE Vehicular Technology Conference VTC'99 Fall, Amsterdam, The Netherlands, Sept. 20-22, 1999, pp. 2388-2392
  49. D. Löffler, E. Gschwendtner, W. Wiesbeck, "Design and measurement of conformal antennas on cylindrical and spherical geometries," africon'99 - 5th IEEE Africon Conference, Cape Town, South Africa, Sept. 28 - Oct. 1, 1999, pp. 1005-1010
  50. E. Gschwendtner, D. Löffler, W. Wiesbeck, "Spiral antenna with external feeding for planar applications," africon'99 - 5th IEEE Africon Conference, Cape Town, South Africa, Sept. 28 - Oct. 1, 1999, pp. 1011-1014
  51. E. Gschwendtner, J. Parlebas, W. Wiesbeck, "Spiral Antenna with planar external feeding for mobile applications," 29th European Microwave Conference EuMC'99, Munich, Germany, Oct. 4-8, 1999, pp. 1/135-138
  52. D. Löffler, Y. Venot, W. Wiesbeck, "Low cost broadband antenna with SDMA capability for next generation PCS base stations," 29th European Microwave Conference EuMC'99, Munich, Germany, Oct. 4-8, 1999, pp. 3/142-3/147
  53. M. Döttling, T. Zwick, W. Wiesbeck, "Ray tracing techniques and their applications in land mobile satellite propagation," Proc. European Wireless '99, München, Germany, Oct. 7-8, 1999, pp. 107-111
  54. D. Löffler, W. Wiesbeck, "A comparison of measured performance data for different conformal antenna geometries," 1st European Workshop on Conformal Antennas, Karlsruhe, Germany, October 29, 1999, pp. 42-45
  55. E. Gschwendtner, W. Wiesbeck, "Dual radiation mode spiral antenna for conformal integration into vehicles," COST260-Workshop on Smart Antennas, Aveiro, Portugal, Nov.3-5, 1999
  56. R. T. Pötzschke, G. Staikov, W.J. Lorenz, W. Wiesbeck, "Electrochemical nanostructuring of n-Si(111) single-crystal faces," Journal of The Electrochemical Society, vol 146, no 1, pp. 141-149, 1999
  57. G. Staikov, W.J. Lorenz, "Electrochemical 3D metal phase formation on UPD modified foreign substrates," Zeitschrift phys. Chemie, NF vol. 208, no. 17, 1999
  58. W. J. Lorenz, G. Staikov, " Corrosion and corrosion inhibition on an atomic level — an important topic for modern nanotechnology," Proceedings of the Symposium Critical Factors in Localized Corrosion III, vol. 98, no. 17, p.303, Electrochemical Society, Pennington, 1999.
  59. E. C. Bucharsky, R.T. Pötzschke, G. Staikov, E. Budevski, W.J. Lorenz, W. Wiesbeck, "Frequency dispersion of the ionic conductivity of RbAg4I5 at low temperatures," Solid State Ionics, vol.124, pp.101-108, 1999
  60. G. Staikov, W.J. Lorenz, E. Budevski, " Low-dimensional metal phases and nanostructuring of solid surfaces," in Imaging of Surfaces and Interfaces - Frontiers in Electrochemistry, vol. 5, p. 1, edited by P. Ross and J. Lipkowski, Wiley-VCH, Weinheim 1999.
  61. W. Lorenz, "Nanostrukturierung an fest/flüssig Phasengrenzen," GDCh-Jahrestagung, 1998
  62. W. J. Lorenz, W. Wiesbeck, G. Staikov, " The low-dimensional phase concept applied to the dissolution and passivation of transition metals," 196th Meeting of The Electrochemical Society, Honolulu, October 17-22, 1999, Abstract No. 561, Proceedings of the "International Symposium in Honor of Norio Sato: Passivity and Localized Corrosion", The Electrochemnical Society, Pennington, USA, in press
  63. W. J. Lorenz, W. Wiesbeck, G. Staikov, " Electrocrystallization of metals and modern nanotechnology," 196th Meeting of The Electrochemical Society, Honolulu, October 17-22, 1999, Abstract No. 842, Proceedings of the "Symposium on Fundamental Aspects of Electrochemical Deposition and Dissolution Including Modelling", The Electrochemnical Society, Pennington, USA, in press
  64. T. Dreyer, R.E. Riedlinger, "Transient response of cylindrical piezoceramics used in self focusing transducers for therapy," Proc. 1999 IEEE International Ultrasonics Symposium, Lake Tahoe, 1999
  65. T. Dreyer, R.E. Riedlinger, "PVDF- membrane- and fibre optical hydrophone compared in a pulsed intense ultrasonic field," Proc. Ultrasonics International 99 and World Congres of Ultrasonics ´99, Copenhagen, 1999
  66. T. Dreyer, J. Zenk, R.E. Riedlinger, H. Iro, "Application of a fibre-optical probe hydrophone for in vivo measurements of therapeutical ultrasound (Abstr)," J Acoust Soc Am, vol. 105, no 2, Pt. 2, p 1291, 1999
  67. S. Ginter, R. Riedlinger, "Numerical simulation of US-thermotherapy combining nonlinear wave propagation with broadband tissue absorption," Proc. Ultrasonics International 99 and World Congres of Ultrasonics ´99, Copenhagen, 1999
  68. S. Ginter, E. Steiger, R.E. Riedlinger, "Numerical simulation of the enhanced heat production in tissue due to the nonlinear character of high intensity focused ultrasound (HIFU) (Abstr)," J Acoust Soc Am, vol. 105, no 2, Pt. 2, p 1117, 1999
  69. E. Steiger, S. Ginter, "Numerical simulation of ultrasonic shock wave propagation in lossy liquids obeying a frequency power law (Abstr)," J Acoust Soc Am, vol. 105, no 2, Pt. 2, p 1231, 1999
  70. J. Zenk, F. Waldfahrer, T. Dreyer, J. Hornung, H. Iro, "High energy pulsed ultrasound (HEPUS) for tumor therapy -in vivo investigations," J Cancer Res Clin Oncol, 125 (Suppl):82, 1999
  71. M. Thumm, ed., Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999
  72. S. C. Zhang, M. Thumm, "Gyrokinetics of coaxial-cavity electron cyclotron maser," Int. J. Infrared and Millimeter Waves, vol. 20, pp. 157-170, 1999
  73. D. Wagner, M. Thumm, W. Kasparek, "Hybrid modes in highly oversized corrugated rectangular waveguides," Int. J. Infrared and Millimeter Waves, vol. 20, pp. 567-581 1999
  74. B. Plaum, G. Gantenbein, W. Kasparek, M. Thumm, D. Wagner, "Far field calculations and measurements of an S-bend deformed oversized HE11-waveguide antenna," Int. J. Infrared and Millimeter Waves, vol. 20, pp. 1009-1017, 1999
  75. S. C. Zhang, M. Thumm, "Structural eccentricity effect on output power of a coaxial-cavity gyrotron oscillator," Int. J. Infrared and Millimeter Waves, vol. 20, pp. 1271-1276, 1999
  76. S. C. Zhang, M. Thumm, "Gyrokinetic description of the structural eccentricity influence on the starting current of a coaxial-cavity gyrotron," Physics of Plasmas, vol. 6, pp. 1622-1626, 1999
  77. A. Wien, M. Thumm, "Numerical analysis of quasi-optical mode converters, Part 1: Backscattering analysis of shaped-end radiators," Int. J. Electronics, vol. 86, pp. 739-745, 1999
  78. A. Wien, M. Thumm, "Numerical analysis of quasi-optical mode converters, Part 2: Analysis of azimuthal waveguide deformations using a boundary element method," Int. J. Electronics, vol. 86, pp. 747-754, 1999
  79. O. Dumbrajs, J. Anderer, S. Illy, B. Piosczyk, M. Thumm, N.A. Zavolsky, "Multifrequency operation of a gyrotron," IEEE Trans. on Plasma Science, vol. PS-27, pp. 327-329, 1999
  80. G. Dammertz, O. Braz, A.K. Chopra, K. Koppenburg, M. Kuntze, B. Piosczyk, M. Thumm, "Recent results of the 1 MW, 140 GHz, TE22,6-mode gyrotron," IEEE Trans. on Plasma Science, vol. PS-27, pp. 330-339, 1999
  81. B. Piosczyk, O. Braz, G. Dammertz, C.T. Iatrou, S. Illy, M. Kuntze, G. Michel, M. Thumm, "165 GHz, 1.5 MW-coaxial cavity gyrotron with depressed collector," IEEE Trans. on Plasma Science, vol. PS-27, pp. 484-489, 1999
  82. V. Erckmann, G. Dammertz, D. Dorst, L.Empacher, W. Förster, G. Gantenbein, T. Geist, W. Kasparek, H.P. Laqua, G.A. Müller, M.Thumm, M.Weissgerber, H. Wobig, "ECRH and ECCD with high power gyrotrons at the stellarators W7-AS and W7-X," IEEE Trans.on Plasma Science, vol. PS-27, pp. 538-546, 1999
  83. G. Link, L. Feher, M. Thumm, H.-J. Ritzhaupt-Kleissl, R. Böhme, A. Weisenburger, "Sintering of advanced ceramics using a 30 GHz, 10 kW, CW industrial gyrotron," IEEE Trans. on Plasma Science, vol. PS-27, pp. 547-554, 1999
  84. C. Del RioBocio, R. Gonzalo, M. Sorolla Ayza, M. Thumm, "Optimal horn antenna design to excite high-order Gaussian beam modes from TE0m smooth circular waveguide modes," IEEE Trans. on Antennas and Propagation, vol. AP-47, pp. 1440-1448, 1999
  85. G. Michel, M. Thumm, "Spectral domain techniques for field pattern analysis and synthesis," Surv. Math. Ind., vol. 8, pp. 259-270, 1999
  86. M. Thumm, "On the way to 2 MW CW broadband gyrotrons with stepwise frequency tuning," Proc. Workshop on European Collaboration on FEM, Rijnhuizen, Nieuwegein, The Netherlands, 1999, pp. 82 - 95.
  87. V. Erckmann, G. Dammertz, W. Kasparek, H.P. Laqua, H. Maassberg, M. Thumm, W7-X and the W7-AS teams at IPP Garching, W7-X team at FZK Karlsruhe, W7-X team at IPF Stuttgart, "ECRH and ECCD at W7-AS, Prospects for W7-X," 13th Topical Conf. on Applications of Radio Frequency Power to Plasmas, Annapolis, Maryland, USA, April 11-13,1999, pp. 229-236
  88. G. Dammertz, O. Dumbrajs, K. Koppenburg, B. Piosczyk, M. Thumm, "Frequency-step-tunable high-power gyrotrons for plasma physics applications," Proc. Int. Conf. on Electronics and Radiophysics of Ultra-High Frequencies (UHF-99), St. Petersburg, Russia, 1999, Invited Paper, pp. 108-111.
  89. G. Link, S. Rhee, A. Weisenburger, R. Böhme, M. Thumm, "Investigations of millimeter wave sintering of ZrO2 and Al2O3 nanoceramics, Proc. 6th Conf. and Exhibition of the European Ceramic Society, Brighton, UK, 1999, Vol. 1, pp. 387-388.
  90. B. Piosczyk, A. Arnold, O. Braz, G. Dammertz, M. Kuntze, G. Michel, M. Thumm, "Step frequency tuning with the 165 GHz TE31,17 coaxial gyrotron," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 7-20
  91. G. Dammertz, E. Borie, M. Kuntze, B. Piosczyk, M. Thumm, "2.1 MW, 140 GHz gyrotron with depressed collector," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 21-30
  92. M. V. Kartikeyan, E. Borie, M. Thumm, "Feasibility study for a 2 MW, CW conventional cavity gyrotron at 140 GHz," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 31-38
  93. G. S. Ling, B. Piosczyk, M. Thumm, "Compact multi-stage depressed collectors for gyrotrons," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 49-58
  94. K. Koppenburg, B. Piosczyk, M. Thumm, "Interaction between the coils in a magnet system for a fast frequency-step-tunable high-power gyrotron," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 59-64
  95. D. Wagner, W. Kasparek, M. Thumm, "Optimized nonlinear cavity and uptaper for Gyrotron FU V," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 99-110
  96. G. Michel, M. Kuntze, B. Piosczyk, M. Thumm, "Design issues of broadband quasi-optical mode converters," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 121-126
  97. S. Rhee, G. Link, L. Feher, M. Thumm, "Recent results on mm-wave materials processing at Forschungszentrum Karlsruhe," Proc. 11th Joint Russian-German Meeting on ECRH and Gyrotrons, Karlsruhe, Stuttgart, Garching, 1999, pp. 333-338
  98. W. Kasparek, V. Erckmann, H.P. Laqua, E. Borie, G. Dammertz, L. Empacher, W. Förster, G. Gantenbein, S. Illy, G. Michel, G. Müller, B. Piosczyk, M. Thumm, M. Weißgerber, H. Zohm, W7-X and W7-AS Teams at IPP Garching, W7-X Team at IPF Stuttgart, W7-X Team at FZK Karlsruhe, "ECRH and ECCD for the stellarator W7-X," 4th Int.Workshop on Strong Microwaves in Plasmas, Nizhny Novgorod, Russia, August 2-9, 1999, Invited paper H15
  99. M. Thumm, E. Borie, O. Braz, G. Dammertz, K. Koppenburg, M. Kuntze, B. Piosczyk, "1.6 MW frequency step-tunable D-band gyrotron," 4th Int.Workshop on Strong Microwaves in Plasmas, Nizhny Novgorod, Russia, August 2-9, 1999, Invited paper S2
  100. B. Piosczyk, O. Braz, G. Dammertz, M. Kuntze, G. Michel, M.Thumm, "Status of the 1.5 MW, 165 GHz coaxial cavity gyrotron," 4th Int.Workshop on Strong Microwaves in Plasmas, Nizhny Novgorod, Russia, August 2-9, 1999, Contributed paper S5
  101. M. Thumm, A. Arnold, R. Heidinger, M. Rohde, R. Spoerl, "Progress report on CVD-diamond window," 5th Biennial Int. Workshop on ECH Transmission Systems, Carmel, California, September 1-3, 1999
  102. M. Thumm, O. Braz, R. Heidinger, M. Makowski, R. Spörl, "Design and optimization of the ITER ECRF window unit," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, PS-5.
  103. A. Arnold, O. Braz, M. Thumm, "Performance tuning on quasioptical low-power gyrotron mode exciters," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, PS-6.
  104. G. Ling, B. Piosczyk, M. Thumm, "A new approach for multi-stage depressed collectors for gyrotrons," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, PS-7.
  105. G. Michel, M. Kuntze, B. Piosczyk, M. Thumm, "Considerations on multimode quasi-optical converters," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, PS-8.
  106. O. Dumbrajs, V.I. Khizhnyak, A.B. Pavelyev, B. Piosczyk, M. Thumm, "Design of rapid frequency-step-tunable powerful coaxial-cavity harmonic gyrotrons," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, TU-A6.
  107. B. Pioszcyk, O. Braz, G. Dammertz, M. Kuntze, G. Michel, O.S. Lamba, M. Thumm, "Progress report on the 165 GHz coaxial cavity gyrotron," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, TU-A9.
  108. M. V. Kartikeyan, A.K. Sinha, H.N. Bandopadhyay, S.N. Joshi, E. Borie, M. Thumm, "A novel interaction structure with helical grooves for high power TWTs," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, TU-E6.
  109. M. Thumm, S. Alberti, A. Arnold, E. Borie, G. Dammertz, V. Erckmann, P. Garin, E. Giguet, S. Illy, G. Le Cloarec, Y. Le Goff, R. Magne, G. Michel, B. Piosczyk, M.Q. Tran, D. Wagner, "1 MW, 140 GHz, CW gyrotron for Wendelstein-7-X, " Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, Plenary, 1999, W-2.
  110. M. V. Kartikeyan, E. Borie, B. Piosczyk, O.S. Lamba, V.V.P. Singh, A. Möbius, H.N. Bandopadhyay, M. Thumm, "Design of a 42 GHz, 200 kW CW gyrotron with radial quasi-optical output coupling," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, W-A4.
  111. M. Kuntze, E. Borie, G. Dammertz, B. Piosczyk, M. Thumm, "140 GHz gyrotron with 2.1 MW output power," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, W-A6.
  112. K. Koppenburg, B. Piosczyk, M. Thumm, "Investigations on magnet systems for fast frequency-step-tunable-high-power gyrotrons," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, W-D5.
  113. B. Plaum, D. Wagner, W. Kasparek, M. Thumm, "Numerical optimization of waveguide bends using a genetic algorithm," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, TH-A5.
  114. M. V. Kartikeyan, E. Borie, M. Thumm, "On the possibility of a 1.5-2 MW, CW conventional gyrotron at 140 GHz," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, F-A7.
  115. L. Feher, G. Link, M. Thumm, "Electrothermal heating model for microwave/hybrid-processed materials," Conf. Digest 24th Int. Conf. on Infrared and Millimeter Waves, Monterey, California, USA, 1999, F-B5.
  116. G. Link, L. Feher, M. Thumm, "Hot wall 30 GHz cavity for homogeneous high temperature heating," Proc. 7th Int. Conf. on Microwave and High Frequency Heating,Valencia, Spain, 1999, pp. 165-168.
  117. L. Feher, G. Link, M. Thumm, "Electrothermal heating effects and temperature gradients in microwave processed materials," Proc. 7th Int. Conf. on Microwave and High Frequency Heating,Valencia, Spain, 1999, pp. 435-438.
  118. M. Thumm, S. Alberti, A. Arnold, E. Borie, G. Dammertz, V. Erckmann, P. Garin, E. Giguet, S. Illy, G. Le Cloarec, Y. Le Goff, R. Magne, G. Michel, B. Piosczyk, M. Q. Tran, D. Wagner, "Highly efficient 1 MW, 140 GHz, CW gyrotron with CVD-diamond window," Int. Workshop on Far Infrared Technologies, Fukui, Japan, September 30, 1999.
  119. A. Arnold, O. Braz, O. Schindel, H.R. Kunkel, M. Thumm, "A mm-wave D-Band vector network analyzer of high dynamics," 29th European Microwave Conf., München, Germany, October 4-8, 1999, pp. 16-19
  120. M. Thumm, A. Arnold, E. Borie, O. Braz, G. Dammertz, O. Dumbrajs, K. Koppenburg, M. Kuntze, G. Michel, B. Piosczyk, "Frequency step-tunable (114-170 GHz) megawatt gyrotrons for plasma physics applications," Proc. 11th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC11), Oh-arai, Japan, October 4-8, 1999.
  121. M. Thumm, A. Arnold, R. Heidinger, M. Rohde, R. Schwab, R. Spörl, "Status report on CVD-diamond window development for high-power ECRH," Proc. 11th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC11), Oh-arai, Japan, October 4-8, 1999.
  122. G. Dammertz, S. Alberti, A. Arnold, E. Giguet, Y. LeGoff, M. Thumm, "Cold test measurements on components of the 1 MW, 140 GHz, CW gyrotron for the stellarator Wendelstein 7-X," Proc. 11th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC11), Oh-arai, Japan, October 4-8, 1999.
  123. Development of 2 MW CW broadband gyrotrons with stepwise frequency tuning, Seminar, National Institute for Fusion Science, Toki, Japan, 02.03.99
  124. Optimized nonlinear cavity and uptaper for gyrotron FUV, Seminar, Department of Applied Physics, Fukui University, Japan, 03.03.99
  125. Development of 2 MW CW broadband gyrotrons with stepwise frequency tuning, Seminar, Department of Applied Physics, Fukui University, Japan, 03.03.99
  126. Frequency-step-tunable megawatt gyrotrons for the D-Band (110-170 GHz), Seminar, Japanese Society of Infrared Science and Technology, Tokio, Japan, 01.10.99
  127. M. Thumm, "State-of-the-art of high power gyro-devices and free electron masers - Update 1998," FZKA-Report 6224, Forschungszentrum Karlsruhe, 1999
  128. M. Thumm, O. Braz, C. T. Iatrou, R. Heidinger, S. Henry, M. Makowski, R. Spörl, J. Szczesny, "Support for ITER ECRF design - Subtask 3: Design and optimization of the window unit - Final Report," FZKA- Report 6255, Forschungszentrum Karlsruhe, 1999
  129. B. Piosczyk, O. Braz, G. Dammertz, M. Kuntze, G. Michel, A. Möbius, M. Thumm, "ITER ECRF coaxial gyrotron and window development (EU-T360) - Part I: Coaxial gyrotron development - Final Report," FZKA- Report 6256, Forschungszentrum Karlsruhe, 1999
  130. M. Thumm, O. Braz, R. Heidinger, R. Spörl, A. Arnold, P. Severloh, "ITER ECRF Coaxial gyrotron and window development (EU-T360) - Part II: Window development - Final Report," FZKA- Report 6257, Forschungszentrum Karlsruhe, 1999
  131. O. Schindel, "Entwicklung einer automatisierten Meßwerterfassung für einen vektoriellen Millimeterwellen-Netzwerkanalysator mit hoher Dynamik - Wissenschaftliche Berichte," FZKA-6348, Forschungszentrum Karlsruhe, September 1999
  132. A. Arnold, O. Braz, H.-R. Kunkel, M. Thumm, "Vektorieller Netzwerkanalysator," DE-PS 19 812 604, 16.09.99
  133. L. Feher, G. Link, M. Thumm, "Mikrowellentechnische Zünd- und Verbrennungsunterstützungs- Einrichtung für einen Kraftstoffmotor," DE-OS 19 802 745, 29.07.99, DE-PS 19 802 745, 21.07.99