Publications 1991

  1. M. Lebherz, W. Wiesbeck, W. Krank, "A versatile wave propagation model for the VHF/UHF range considering three-dimensional terrain", Techn. Document TD (91) 019, European Cooperation in the Field of Scientific and Technical Research, COST 231, Temporary Document + TD(91), Firenze, Italy, Jan. 22-24, 1991
  2. M. Thumm, A. Jakobs, M. Ayaza, "Design of short high power TE11-HE11 mode converters in highly overmoded corrugated waveguides", IEEE Trans. on Microwave Theory and Tech., vol. 39, no. 2, pp. 301-309, Feb. 1991
  3. D. Hollmann, "Feldtheoretische Verfahren zur Analyse dielektrischer Resonatoren in integrierten Mikrowellenschaltungen", (Dissertation) Universität Karlsruhe, IHE, Feb. 5, 1991
  4. S. Haffa, D. Hollmann, W. Wiesbeck, "Characterization of anechoic chambers by finite difference method", Proceedings of the 7th Annual Review of Progress in Applied Computational Electromagnetics Symposium (ACES), Monterey, California, March 1991
  5. M. Thumm, H. Li, "Mode conversion due to curvature in corrugated waveguides", Int. Journal of Electronics, vol. 71, no. 2, pp. 333-347, 1991
  6. M. Lebherz, W. Wiesbeck, W. Krank, "Features of 3D VHF/UHF propagation channel modelling", Proc. of the Seventh Int. Conf. on Antennas and Propagation, pp. 976-979, University of York, UK, April 15-18, 1991
  7. E. Heidrich, W. Wiesbeck, "Wideband polarimetric RCS-Antenna measurement", Proc. of the Seventh Int. Conf. on Antennas and Propagation, pp. 424-427, University of York, UK, April 15-18, 1991
  8. A. Quellmalz, W. Krank, W. Wiesbeck, "Transmitter network modelling for efficient frequency assignment applications", Proc. of the Seventh Int. Conf. on Antennas and Propagation, pp. 812-815, University of York, UK, April 15-18, 1991
  9. D.J. Cichon, E.S. Kasischke D.R. Sheen, "Estimation of the P-3/SAR L-, C- and X-Band antenna directivity in range direction based on corner reflector measurements within the absolute SAR calibration", Proc. of the IEEE Int. Geoscience and Remote Sensing Symposium, IGARSS'91, pp. 993-996, Helsinki, June 3-6, 1991
  10. D. Kähny, W. Wiesbeck, K. Schmitt, "First results in bistatic calibration techniques", Proc. of the IEEE Int. Geoscience and Remote Sensing Symposium, IGARSS'91, pp. 1401-1404, Helsinki, June 3-6, 1991
  11. D. Kähny, W. Wiesbeck, "Optimum input parameters for classification of multifrequency polarimetric SAR-DATA using neutral networks", Proc. of the IEEE Int. Geoscience and Remote Sensing Symposium, IGARSS'91, pp. 2157-2160, Helsinki, June 3-6, 1991
  12. T. Kürner, D. Cichon, M. Lebherz, "First results of the IHE 3D urban wave propagation model applied to the alborg test area", Techn. Document TD (91) 053., European Cooperation in the Field of Scientific and Technical Research, COST 231, Temporary Document + TD(91), Lund, Sweden, June 4, 1991
  13. T. Kürner, M. Lebherz, W. Wiesbeck, W. Krank, "Signal characteristics of the VHF/UHF propagation channel", Proc. of the1991 IEEE AP-S Int. Symposium and URSI Radio Science Meeting, London, Ontario, Canada, June 24-28, 1991
  14. M. Lebherz, W. Wiesbeck, W. Krank, "A UTD wave propagation model for urban areas considering multipath effects", Proc. of the IEEE AP-S Int. Symposium & URSI Radio Science Meeting, pp.1530-1533, London, Ontario, Canada, June 24-28, 1991
  15. B. Bittel, H. J. Blasberg, K. Hottong, "Automatische Erkennung von kurzzeitigen Störsignalen bei Tonaufzeichnungen", Rundfunktechnische Mitteilungen, Jahrg. 35(1991) H.2, 1991
  16. W. Wiesbeck, D. Kähny, "Comparison of dual polarization RCS-measurement facilities", Proc. of the Progress In Electromagnetics Research Symposium (PIERS), pp. 806, Cambridge, Massachusetts, USA, July 1-5, 1991
  17. W. Wiesbeck, S. Riegger, "A complete error model for free space polarimetric measurements", IEEE Transactions on Antennas and Propagation, vol. 39, no. 8, pp. 827-844, Aug. 1991
  18. M. Thumm, H. Li, "Mode coupling in corrugated waveguides with varying wall impedance and diameter change", Int. Journal of Electronics, vol. 71, no. 5, pp. 333-347, 1991
  19. M. Lebherz, T. Kürner, "A UTD wave propagation model for microcell planning purposes", Proc. of the 21th Europ. Microwave Conference, pp. 379-384, Stuttgart, Sept . 9-12, 1991
  20. G. Gottwald, W. Wiesbeck, "The conjugate gradient method in comparison with the evolution optimization for solving nonlinear problems", Proc. of the 21th Europ. Microwave Conference, pp. 1544-1549, Stuttgart, Sept. 9-12, 1991
  21. J. Kehrbeck, E. Heidrich, W. Wiesbeck, "Planar microwave doppler-sensors for car speed monitoring", Workshop Proceedings of the 21th Europ. Microwave Conference, pp. 129-134, Stuttgart, Sept. 13 ,1991
  22. K. Schmitt, D. Kähny, W. Wiesbeck, "Comparison of dual polarization RCS-measurement facilities", Proc. of the 2nd International Conference on Electro-magnetics in Aerospace Applications (ICEAA), pp. 327-330, Torino, Italy, Sept. 17-20, 1991
  23. E. Heidrich, W. Wiesbeck, "Application of RCS-antenna-measurements to multiport antennas", Proc. of the 13th Antenna Measurement Techniques Association (AMTA) Meeting and Symposium, pp. 9-35 & pp. 9-40, Boulder, Colorado, USA, Oct. 7-11, 1991
  24. K. Schmitt, E. Heidrich, W. Wiesbeck, "A new calibration technique for bistatic RCS-measurements", Proc. of the 13th Antenna Measurement Techniques Association (AMTA) Meeting and Symposium, pp 2-25 & pp. 2-29, Boulder, Colorado, USA, Oct. 7-11, 1991
  25. W. Wiesbeck, D. Kähny, "Single reference, three target calibration and error correction for monostatic, polarimetric free space measurements", Proceedings of the IEEE, vol. 79, no. 10, pp. 1551-1558, Oct. 1991
  26. J. Kehrbeck, E. Heidrich, W. Wiesbeck, "Mikrowellen-Dopplerradar zur Geschwin-digkeitsmessung", Design & Electronic, special issue on car electronics, nr. 24, pp. 121-124, Nov. 19, 1991
  27. W. Henle, A. Jacobs, W. Kasparek, H. Kumric, G.A. Müller, P.G. Schüller, M. Thumm, F. Engelmann, L. Rebuffi, "Conceptual study of multi-megawatt millimeter-wave transmission and antenna systems for electron cyclotron wave applications in NET/ITER", Fusion Technology 1990, eds.B.E.Keen, M.Huget, R.Hemsworth. Elsevier Science Publishers B.V., ISBN 0-444-88508-0, pp. 238-242, 1991
  28. A. Pochelon, A.T. Goodman, D. Whaley, M.Q. Tran, A. Perrenoud, D. Reinhard, B. Jödicke, H.G. Mathews, W. Kasparek, M. Thumm, "39GHz ECRH system for breakdown studies on the TCA tokamak", Fusion Technology 1990 , eds. B.keen, M.Huget, R.Hemsworth. Elsevier Science Publishers B.V., ISBN 0-444-88508-0, pp. 1075-1079, 1991
  29. W. Henle, W. Kasparek, H. Kumric, G.A. Müller, P.G. Schüller, M. Thumm, V. Erckmann, "Microwave technology of the quasi-optical 140 GHz ECRH on the advanced stellarator W VII_AS", Fusion Technology 1990, eds. B.E.Keen, M.Huguet, R.Hemsworth. Elsevier Science Publishers B.V., ISBN 0-444-88508-0, pp. 1142-1146, 1991
  30. R. Brakel, R. Burhenn, A. Elsner, P. Grigull, H. Kondo, F. Sardei, U. Schneider, A. Weller, H. Wolff, R. Behrisch, D. Hildebrandt, H. Renner, J. Roth, E. Taglauer, W VII-AS Team, ECRH Group (W. Kasparek, G.A. Müller, P.G. Schüller, M. Thumm), NI Group, "Impurity behaviour in W VII-AS plasmas under different wall conditions", Proc. 18th EPS Conf. on Controlled Fusion and Plasma Physics, eds. P. Bachmann, D.C. Robinson, ECA, 15C, Pt.2, pp. 189-192, Berlin, 1991
  31. F. Sardei, H. Ringler, P. Grigull, A. Dodhy, G. Kühner, H. Maaßberg, F.P Penningsfeld, W VII-AS Team, NBI Team, ECRH Group (W. Kasparek, G.A. Müller, P.G. Schüller, M. Thumm), "Participle transport and plasma edge behaviour in the WVII-AS stellarator", Proc. 18th EPS Conf.on Controlled Fusion and Plasma Physics, eds. P. Bachmann, D.C. Robinson, ECA, 15C, Pt.2, pp. 193-196, Berlin, 1991
  32. F.-P. Penningsfeld, W. Ott, W VII-AS Team, ECRH Group (W. Kasparek, G.A. Müller, P.G. Schüller, M. Thumm), NI Group, PI Group, "Neutrtal injection experiments on W VII-AS stellarator", Proc. 18th EPS Conf.on Controlled Fusion and Plasma Physics, eds. P. Bachmann, D.C. Robinson, ECA, 15C, Pt.2, pp. 201-204, Berlin, 1991
  33. V.I. Afanasjev, A.B. Izvozchikov, J. Junker, M. Kick, H. Maaßberg,W. Ohlendorf, F. Sardei, S. Zöpfel,W VII AS Team, NBI Team, ECRH Group (W. Kasparek, G.A. Müller, P.G. Schüller, M. Thumm), "Ion heat conductivity, radial electric fields and CX-losses in the W VII-AS stellarator", Proc. 18th EPS Conf.on Controlled Fusion and Plasma Physics, eds. P. Bachmann, D.C. Robinson, ECA, 15C, Pt.2, pp. 209-212, Berlin, 1991
  34. H.J. Hartfuß, V. Erckmann, L. Giannone, H. Maaßberg, M. Tutter, W VII-AS Team, ECRH Group (W. Kasparek, G.A. Müller, P.G. Schüller, M. Thumm), "Thermal diffusivity from heat wave propagation in Wendelstein VII-AS", Proc. 18th EPS Conf.on Controlled Fusion and Plasma Physics, eds. P. Bachmann, D.C. Robinson, ECA, 15C, Pt.2, pp. 213-216, Berlin, 1991
  35. V. Erckmann, W VII-AS Team, ECRH Group, KfK-Gyrotron Group (G. Dammertz, G. Gantenbein, T. Geist, M. Kuntze, H.-U. Nickel, B. Piosczyk, M. Thumm), "ECRH and ECCD-experiments on W VII AS -status and prospects-", Proc.3rd Joint USSR-FRG Meeting on ECRH and Gyrotrons, pp. 361-368, Muinch, 1991
  36. V. Erckmann, U. Gasparino, L. Giannone, H.J. Hartfuß, H. Maaßberg, M. Tutter, W VII-AS Team, W. Kasparek, G.A. Müller, P.G. Schüller, G. Dammertz, G. Gantenbein, T. Geist, M. Kuntze, H.-U. Nickel, B. Piosczyk, M. Thumm, "ECRH-experiments with a 140 and 70 GHz at the W VII AS stellarator", Proc. Course and Workshop on High Power Microwave Generation and Applications, Int.School of Plasma Physics, 8 pages, Varenna, Italy, 1991
  37. G. Gantenbein, E. Borie, G. Dammertz, O. Dumbrajs, T. Geist, M. Kuntze, A. Möbius, H.-U. Nickel, B. Piosczyk, M. Thumm, "Design of a high-power 140 GHz gyrotron oscillator operating in an asymmetric volume mode", Proc. 3rd Joint USSR-FRG Meeting on ECRH and Gyrotrons, pp. 15-33, Karlsruhe, 1991
  38. T. Geist, M. Thumm, W. Wiesbeck, "Filterbank receiver for 140 GHz gyrotrons operating in asymmetric volume modes", Proc. 3rd Joint USSR-FRG Meeting on ECRH and Gyrotrons, pp. 35-41, Karlsruhe, 1991
  39. T. Geist, M. Thumm, G. Dammertz, "Characterization of machining processes and materials for gyrotron resonators by means of millimeter wave measurement technique", Proc. 3rd Joint USSR-FRG Meeting on ECRH and Gyrotrons, pp. 87-96, Karlsruhe, 1991
  40. W. Henle, H. Kumric, H. Li, M. Thumm, "Optimization and measurement on a direct TE01- HE11 mode converter at 70GHz", Proc. 3rd Joint USSR-FRG Meeting on ECRH and Gyrotrons, pp. 343-360, Karlsruhe, 1991
  41. E. Borie, G. Dammertz, O. Dumbrajs, G. Gantenbein, T. Geist, M. Kuntze, A. Möbius, H.-U. Nickel, B. Piosczyk, M. Thumm, "140 GHz gyrotron developement for plasma heating", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 260-263 (Invited Paper), Lausanne, 1991
  42. G. Gantenbein, E. Borie, A. Möbius, B. Piosczyk, M. Thumm, "Design of a high-power 140 GHz gyrotron oszillator operating in an asymmetric volume mode at KfK", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 264-265, Lausanne, 1991
  43. T. Geist, M. Thumm, W. Wiesbeck, "Linewidth measurement on a 140 GHz gyrotron", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 272-273, Lausanne, 1991
  44. T. Geist, M. Thumm, W. Wiesbeck, "Contiguous filterbank receiver for a pulsed 140 GHz gyrotron", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 274- 275, Lausanne, 1991
  45. B.G. Danly, J.C. Cheng, G. Gulotta, W.L. Lenninger, R. Temkin, M. Thumm, J. Pretterebner, D. Wagner, "Long-pulse CARM oscillator with improved Bragg resonator", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 413-414, Lausanne, 1991
  46. H.-U. Nickel, M. Thumm, "Plane transverse waveguide windows-survey of formular for reflection, transmission and absorbtion", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 444-445, Lausanne, 1991
  47. A.G.A. Verhoeven, P.W. von Amersfoort, R.W.B. Best, A.M. van Ingen, A.B. Sterk, W.H. Urbanus, A. Verheul, M.J. van der Wiel, W. Kasparek, J. Pretterebner, D. Wagner, M. Thumm, "Design of a 1 MW, cw, 200 GHz free electron maser", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 485-486, Lausanne, 1991
  48. D. Wagner, J. Pretterebner, M. Thumm, "Bragg reflector design in highly oversized waveguides", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 537-539, Lausanne, 1991
  49. M. Sato, H. Zushi, K. Nagasaki, M. Iima, S. Kobayashi, K. Sudo, F. Sano, T. Obiki, K. Ohkubo, M. Hosokawa, S. Kubo, T. Mutoh, M. Thumm, "Half megawatt 106 GHz ECRH system for Heliotron-E", Conf. Digest, 16th Int. Conf. on Infrared and Millimeter Waves, Proc., SPIE 1576, pp. 621-622, Lausanne, 1991
  50. E. Borie, G. Dammertz, O. Dumbrajs, G. Gantenbein, T. Geist, M. Kuntze, A. Möbius, H.-U. Nickel, B. Piosczyk, M. Thumm, "140 GHz gyrotron developement for EC wave applications", Course and Workshop on High Power Microwave Generation and Applications, International School of Plasma Physics, 8 pages, Varenna, Italy, 1991
  51. A.G.A. Verhoeven, P.W. van Amersfoort, R.W.B. Best, A.M. van Ingen, A.B. Sterk, W.H. Urbanus, A. Verheul, M. J. van der Wiel, W. Kasparek, J. Pretterebner, D. Wagner, M. Thumm, "Design of a 1 MW, 200 GHz free electron maser", Course and Workshop on High Power Microwave Generation and Applications, International School of Plasma Physics, 8 pages, Varenna, Italy, 1991
  52. D.B. McDermott, C.K. Chong, N.C. Luhmann Jr., M. Thumm, J. Pretterebner, "Bragg reflectors with hamming-window taper", 33rd Annual Meeting of the Division of Plasma Physics of the American Physical Society, Bull. Am. Phys. Soc. 36(1991), p. 2388, Tampa, Florida, 1991
  53. Z. Wirth, D. Kähny, S. Mihly, "Correspondence between geometric properties of real objects and the huynen parameters", Periodica Polytechnica Ser. El. Eng., vol. 35, no. 4, pp. 293-300, Technical University of Budapest, Hungary, 1991
  54. S. Mihly, D. Kähny, I. Bozski, W. Wiesbeck, "High accuracy radar cross section measurements at 3-18 GHz", Periodica Polytechnica Ser. El. Eng., vol. 35, no. 4, pp. 285-292, Technical University of Budapest, Hungary, 1991
  55. T. Geist, "Hochfrequenz- meßtechnische Charakterisierung von Herstellungsprozessen und Werkstoffen für Resonatorn eines 140 GHZ Gyrotrons", (Dissertation) Universität Karlsruhe, IHE, Feb. 12, 1991