A Novel highly accurate synthetic technique for determination of the dispersive characteristics in periodic slow wave circuits

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Title: A Novel highly accurate synthetic technique for determination of the dispersive characteristics in periodic slow wave circuits
Author: Guo, Hezhong; Carmel, Yuval; Lou, Weiran; Chen, Leemian; Rodgers, John; Abe, David; Bromborsky, A.; Destler, William; Granatstein, Victor
Abstract: A novel, highly accurate (0.1-0.5%) synthetic technique for determining the complete dispersive characteristics of electromagnetic modes in a spatially periodic structure is presented. It was successfully applied for the cases of the fundamental (TMo,,$ as well as higher order (TM0(*)T, Mo(3,)p assband modes in a corrugated waveguide. This structure is commonly used in relativistic backward wave oscillators, traveling wave tubes, extended interaction oscillators and a variety of multiwave Cerenkov generators. An appropriately shorted periodic structure resonates at specific frequencies. To accurately and unambiguously measure these frequencies we used unique antenna radiators to excite pure modes in the circuit under test. An analytical technique to derive the complete dispersion relation using the experimentally measured resonances is presented. This technique, which is based on the intrinsic characteristics of spatially periodic structures, is applicable to slow wave structures of arbitrary geometry.
Description: ©1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This article can also be found on the publishers website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=22
Record URI: http://hdl.handle.net/1850/9621
Date: 1992-11

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