Optimization of mode converters for generating the fundamental te01 mode from te06 gyrotron output at 140 ghz

International Journal of Electronics

Volumn 64, Issue 1, 1988, Pages 77-94

  Kumric H ^a   Thumm, M ^a   Wilhelm, R ^a  

^a UNIVERSITY OF STUTTGART   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

WAVEGUIDES;

GYROTRON OSCILLATORS; LOW-LOSS PROPAGATION; MODE CONVERTERS; MODE TRANSFORMATION; TWO-STEP CONVERTER;

GYROTRONS;

EID: 0022560793     PISSN: 00207217     EISSN: 13623060     Source Type: Journal    
DOI: 10.1080/00207218808962786     Document Type: Article

References (28)

1. Borie, E., Jödicke, B., Wenzelburger, H., and Dumbrajs, O., 1988, Resonator design studies for a 150 GHz gyrotron at KfK. International Journal of Electronics, 64, 107-126.
2. Dammertz, G., Haubrich, G., Hochschild, G., Jödicke, B„ Kitlinski, M., Kuntze, M., Möbius, A., Piosczyk, B., and Stickel, H., 1988, First experimental results of the KfK 150 GHz gyrotron. International Journal of Electronics, 64, 29-36.
3. Felch, K., Bier, R., Craig, L. J., Huey, H., Ives, L., Jory, H., Lopez, N., and Spang, S., 1986, CW operation of a 140 GHz gyrotron. International Journal of Electronics, 61, 701-714.
4. Hargreaves, T. A., Kim, K. J., McAdoo, J. H., Park, S. Y., Seeley, R. D., and Read, M. E., 1984, Experimental study of a single-mode quasi-optical gyrotron. International Journal of Electronics, 57, 977-984.
5. Jedar, E., Mourier, G., Bergero, J. P., Jendrzejczak, G., and Talbot, J. M., 1986, Oversized millimeter components for 200 kW at 60 GHz and 100 GHz. Conf Digest, 11th Int. Conf on Infrared and Millimeter Waves, Tirrenia, Pisa, Italy, pp. 609-611.
6. Kasparek, W., and Müller, G. A., 1985, A novel device for multimode analysis in oversized waveguides. Conf. Digest, 10th Int. Conf. on Infrared and Millimeter Waves, Lake Buena Vista, Florida, U.S.A., pp. 238-239.
7. Kasparek, W., and Müller, G. A., 1988, The wavenumber spectrometer-an alternative to the directional coupler for multimode analysis in oversized waveguides. International Journal of Electronics, 64, 5-20.
8. Kovalev, N. F., Orlova, I. M., and Petelin, M. I., 1968, Wave transformation in a multimode waveguide with corrugated walls. Radio Physics and Quantum Electronics, 11, 449-450.
9. Krhscher, K. E., Danly, B. G., Saito, H., Schutkeker, J. B., Temkin, R. J., and Tran, T. M., 1985, Prospects for high power gyrotrons. Plasma Physics and Controlled Fusion, 27, 1449-1459.
10. Kreischer, K. E., Spira, S., and Temkin, R. J., 1986, Operation of a 1 MW, 140 GHz gyrotron. Conf. Digest, 11th Int. Conf. on Infrared and Millimeter Waves, Tirrenia, Pisa, Italy, pp. 229-231.
11. Levine, J. S., 1983, 35 GHz ECRH transmission system for ISX-B. Proc. 3rd ECRH Transmission System Workshop, U.S. D.o.E., Germantown, pp. 260-279.
12. Levine, J. S., 1984, Rippled wall mode converters for circular waveguide. International Journal of Infrared and Millimeter Waves, 5, 937-952.
13. Machuzak, J. S., Woskoboinikow, P., Mulligan, W. J., Cohn, D. R., Gerver, M., Guss, W., Mauel, M., Post, R. S., and Temkin, R. J., 1986, 137 GHz gyrotron diagnostic for instability studies in Tara. Rev. Sei. Instrum., 57, 1983-1985.
14. Moeller, C., 1982, Mode converters used in the Doublet III ECH microwave system. International Journal of Electronics, 53, 587-593.
15. Mourier, G., Faillon, G., and Garin, P., 1986, A 100 GHz gyrotron-results and future prospects. International Journal of Electronics, 61, 715-727.
16. Nusinovich, G. S., Vlasov, S. N., Gol’Denderg, A. L., Malygin, V. I., Pavel’ev, A.B., FlyaGIN, V. A., and Khizhnyak, V. I., 1986, 11th Int. Conf. on Infrared and Millimeter Waves, Tirrenia, Pisa, Italy.
17. Riviere, A. C., 1986, A review of ECRH experiments. Plasma Physics and Controlled Fusion, 28, 1263-1275.
18. Thumm, M., Janzen, G., Müller, G., Schüller, P. G., Wilhelm, R., and Erckmann, V., Conversion of gyrotron TE0ll mode mixtures into a linearly polarized HE, wave. Conf. Digest, 8th Int. Conf. on Infrared and Millimeter Waves, Miami Beach, Florida, U.S.A., Paper TH4.7.
19. Thumm, M., Erckmann, V., Janzen, G., Müller, G., Schüller, P. G., and Wilhelm, R., ECRH systems for linearly polarized plasma irradiation in the HE, mode at 28 and 70 GHz. Proc. 4th Int. Symp. on Heating in Toroidal Plasmas, Rome, Italy, Vol. II, pp. 1461-1468.
20. Thumm, M., 1984, High-power millimetre-wave mode converters in overmoded circular waveguides using periodic wall perturbations. International Journal of Electronics, 57, 1225-1246.
21. Thumm, M., Erckmann, V., Janzen, G., Kasparek, W., Müller, G., Schüller, P. G., and Wilhelm, R., 1985, Generation of the gaussian-like HE, mode from gyrotron TE0„ mode mixtures at 70 GHz. International Journal of Infrared and Millimeter Waves, 6, 459-470.
22. Thumm, M., 1985, Advanced overmoded waveguide components for high-power millimetre wave applications at 28, 70 and 140 GHz. Proc. ISih European Microwave ConJ., Paris, France, pp. 790-795.
23. Thumm, M., 1986, High power mode conversion for linearly polarized HEn hybrid mode output. International Journal of Electronics, 61, 1135-1153.
24. Thumm, M., Kumri6, H., and Stickel, H., 1987, TE03-to-TE01 mode converters for use with a 150 GHz gyrotron. International Journal of Infrared and Millimeter Waves, 8, 227240, and Conf. Digest, 11th Int. Conf. on Infrared and Millimeter Waves, Tirrenia, Pisa, Italy, pp. 215-217.
25. Unger, H. G., 1958, Circular waveguide taper of improved design. Bell Systems Technical Journal, 37, 899-912.
26. Vlasov, S. N., and Orlova, M., 1974, Quasioptical transformer which transforms the waves in a waveguide having a circular cross section into a highly directional wave beam. Radio Physics and Quantum Electronics, 17, 115-119.
27. Vlasov, S. N., Zagryadskaya, L. I., and Petelin, M. I., 1975, Transformation of a whispering gallery mode, propagating in a circular waveguide, into a beam of waves. Radio Engineering and Electron Physics, 20, 14-17.
28. Zhang, Z. X., Janzen, G., Müller, G., Schüller, P. G., Thumm, M., Wilhelm, R., and Erckmann, V., 1983, Mode analysis of gyrotron radiation by far field measurements. Conf. Digest, 8th Int. Conf. on Infrared and Millimeter Waves, Miami Beach, Florida, U.S.A., Paper T4.3.