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A steady-state 3-D large-signal model of the beam–wave interaction (BWI) in folded-waveguide (FW) traveling-wave tubes (TWTs) has been developed. The model used a three-port network representation of the circuit and a set of discrete rays representation of the 3-D electron beam. Values of the impedance elements that characterize the model are determined by a 3-D finite-element code, high-frequency...
In this paper the signal integrity was researched. signal integrity of high speed digital circuit was achieved by optimizing topological structure of transmission lines, matching terminal impedance, setting up reasonable shielding structure. Power integrity was achieved by adding filter circuit. Ultra broadband microwave network, digital circuit and power-supply distribution circuits were integrated,...
Using HFCS-I and MAFIA, the impedance characteristics of a typical helical slow-wave structure (SWS) is studied, in which the non-resonant perturbation (NRP) method is adopted and the direct calculation from discrete electromagnetic (EM) fields is performed. The results from HFCS-I and MAFIA are found to be consistent.
This paper provides the design and realization of high frequency circuit simulator (HFCS) which is based on the Finite Integration Technology. For vilification, the cold-test characteristics of two actual helical slow wave structures have been calculated and the results were found to be consistent with those of MAFIA simulation with same mesh density.
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