Nonlinear theory of large-signal mode locking in a gyrotron oscillator

1995 ◽  
Author(s):  
Alan H. McCurdy ◽  
Hao Wu
Keyword(s):  
Nonlinear Theory ◽  
Mode Locking ◽  
Large Signal ◽  
Gyrotron Oscillator ◽  
Signal Mode

scholarly journals HARMONIC BALANCE THEORY FOR SCHEME TECHNICAL DESIGN

T-Comm ◽  
2020 ◽  
Vol 14 (11) ◽  
pp. 21-32
Author(s):  
Svetlana F. Gorgadze ◽  
◽  
Anton A. Maximov ◽  
Keyword(s):  
Harmonic Balance ◽  
Harmonic Balance Method ◽  
Projection Methods ◽  
Algebraic Equations ◽  
Electronic Circuits ◽  
Large Signal ◽  
Linear Algebraic Equations ◽  
Methods Of Synthesis ◽  
Signal Mode

The analysis and generalization of the main publications on the methods of synthesis and analysis of non-linear active microwave circuits based on the use of the harmonic balance method are presented. As a result of some classification of mathematical approaches and techniques used in the context of this method, a selection and review of basic algorithms was made, the sequential application of which makes it possible to obtain the final result for a scheme of any complexity. The principles of drawing up the initial system of differential equations for electronic circuits and reducing it to a system of linear algebraic equations are considered. A detailed and, at the same time, simplified interpretation of the approaches involving the use of projection methods and Krylov subspaces is given in order to make them easier to understand. Both the complete and the restart generalized method of minimal residuals are considered, in which the desired solution is obtained in the course of an iterative process, at each stage of which subspaces of lower dimension are constructed. The possibilities of simulators and application packages intended for circuit design of electronic circuits are considered. The problem of matching a power amplifier in large signal mode using the APLAC simulator, which is NI AWR technology for designing high-frequency circuits, is discussed.

scholarly journals Construction of models of microwave transistors when changing the probing signal in the frequency and power range

2019 ◽  
Vol 30 ◽  
pp. 01010
Author(s):  
Vladimir Evseev ◽  
Mikhail Ivlev ◽  
Stanislav Morugin ◽  
Sergey Nikulin
Keyword(s):  
Matching Condition ◽  
Complex Conjugate ◽  
Large Signal ◽  
Two Phase ◽  
Load Impedance ◽  
Microwave Transistors ◽  
Reflected Waves ◽  
Probing Signal ◽  
Signal Mode ◽  
Phase Differences

It is shown that to model a transistor in the form of S-parameters in the large signal mode, it is necessary to present the model as two S-matrices that describe the transistor at two phase differences between the incident and reflected waves equal to 0 and 90 degrees. The problem of matching a transistor with a load is reduced to solving a nonlinear equation with respect to a previously unknown phase difference, after which the load impedance is selected from the complex-conjugate matching condition.

Design and simulation of a W‐band gyrotron oscillator based on self‐consistent nonlinear theory

2020 ◽  
Vol 62 (10) ◽  
pp. 3175-3179
Author(s):  
Zhihui Geng ◽  
Rui Zhang ◽  
Xiudong Yang ◽  
Yunfeng Liao ◽  
Shouxi Xu
Keyword(s):  
Nonlinear Theory ◽  
Gyrotron Oscillator ◽  
W Band ◽  
Self Consistent
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