Effect of the Radial Thickness of Helix on Dispersion and Coupling Impedance in TWTs

[1] Antonsen T M, Jr., Mondelli A A, Levush B, Verboncoeur J P, and Birdsall C K. Advances in modeling and simulation of vacuum electronic devices. Proc. IEEE, 1999, 87(5): 804-839. [2] 段兆云，宫玉彬，王文祥，雷文强，蓝永海.考虑螺旋带径向厚度的螺旋慢波结构的研究. 强激光与离子束，2002, 14(6): 905-910. [3] 张勇，莫元龙，李建清，周晓岚.翼片加载螺旋线慢波结构的螺旋带模型. 强激光与离子束, 2002, 14(6): 887-891. [4] Kapoor S，Raju R S, Gupta R K, Joshi S N, and Basu B N. Analysis of an inhomogeneously loaded helical slow-wave- structure for broad-band TWTs[J].IEEE Trans.Edu.1989, 36(9):2000-2004 [5] Kumar L, Raju R S, Joshi S N, and Basu B N. Modeling of a vane-loaded helical slow-wave structure for broad-band traveling-wave tube. IEEE on Trans.Edu., 1989, 39(9): 1991- 1999. [6] Raju R S, Joshi S N, and Basu B N. Modeling of practical multi-octave-band slow-wave structures of a traveling-wave tube for interaction impedance[J].IEEE Trans. on Edu.1992, 39(9):996-1001 [7] Chang Y T. A study of helix-coupled vane slow-wave structure. Acta. Elec. Sin., 1986, 16(8): 67-75. [8] Kartikeyan M V, Sinha A K, Bandopadhyay H N, and Venkateswarlu D S. A study of a radially thick helix: Equivalent circuit approach[J].IEEE Trans. on Edu.1992, 39(8):1961-1965 [9] Kartikeyan M V, Sinha A K, Bandopadhyay H N, and Venkateswarlu D S. Effective simulation of the radial thickness of helix of broad band, Practical TWTs[J].IEEE Trans. on Plasma Science.1999, 27(4):1115-1123 [10] Chernin D, Antonsen T M, Jr., and Levush B. Exact treatment of the dispersion and beam interaction impedance of a thin tape helix surrounded by a radially stratified dielectric. IEEE Trans. on Electron Devices, 1999, 46(7): 1472-1483. [11] Kory C L and Dayton J A. Accurate cold-test model of helical TWT slow-wave circuits[J].IEEE Trans. on Electron Devices.1998, 45(4):966-971 [12] Kory C L and Dayton J A. Effect of helical slow-wave circuit variations on TWT cold-test Characteristics[J].IEEE Trans. on Electron Devices.1998, 45(4):972-976 [13] Rao S J, Ghosh S, Jain P K，and Basu B N. Nonresonant perturbation measurements on dispersion and interaction impedance characteristics of helical slow wave structure[J].On Microwave Theory and Techniques.1997, 45(9):1585-1593 [14] Greninger Paul. Tape helix perturbation including 3-D dielectrics for TWTs[J].IEEE Trans. on Electron Devices.2001, 48(1):12-23