Frequency-domain nonlinear microwave circuit simulation using the arithmetic operator method

1990 ◽  
Vol 38 (8) ◽  
pp. 1139-1143 ◽  
Author(s):  
C.-R. Chang ◽  
M.B. Steer
Keyword(s):  
Frequency Domain ◽  
Circuit Simulation ◽  
Operator Method ◽  
Microwave Circuit ◽  
Arithmetic Operator

Mathematical foundations of frequency-domain modeling of nonlinear circuits and systems using the arithmetic operator method

2003 ◽  
Vol 13 (6) ◽  
pp. 473-495 ◽  
Author(s):  
Frank P. Hart ◽  
Daniel G. Stephenson ◽  
Chao-Ren Chang ◽  
Khaled Gharaibeh ◽  
Robert G. Johnson ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Operator Method ◽  
Nonlinear Circuits ◽  
Domain Modeling ◽  
Mathematical Foundations ◽  
Arithmetic Operator

scholarly journals Overcoming the Realization Problems of Wideband Matching Circuits

2018 ◽  
pp. 31-36
Author(s):  
Balázs Matolcsy ◽  
Attila Zólomy
Keyword(s):  
Design Process ◽  
Circuit Simulation ◽  
Impedance Matching ◽  
Microwave Circuit ◽  
Design Rules ◽  
Analytical Design ◽  
Calculation Technique ◽  
Matching Networks ◽  
Practical Design

During the analytical design process of wideband impedance matching major problems may arise, that might lead to non-realizable matching networks, preventing the successful impedance matching. In this paper two practical design rules and a simplified equation is presented, supporting the design of physically realizable impedance matching networks. The design rules and calculation technique introduced by this paper is summarized, and validated by microwave circuit simulation examples.

Comprehensively Efficient Analysis of Nonlinear Wire Scatterers Considering Lossy Ground and Multi-tone Excitations

2020 ◽  
Vol 35 (8) ◽  
pp. 878-886
Author(s):  
Amir Bahrami ◽  
Saeed Ostadzadeh
Keyword(s):  
Harmonic Balance ◽  
Operator Method ◽  
Nonlinear Loads ◽  
Approximate Methods ◽  
Strongly Nonlinear ◽  
Intelligent Water Drops Algorithm ◽  
Water Drops ◽  
Two Stages ◽  
Port Structures ◽  
Arithmetic Operator

In this paper based on intelligent water drops algorithm (IWD), comprehensively nonlinear analysis of nonlinearly loaded wire scatterers are carried out. The analyses involve two stages. First, the problem is modeled as a nonlinear multi-port equivalent circuit and it is then reformulated into an optimization problem which is solved by the IWD. The simulation results are compared with harmonic balance (HB), arithmetic operator method (AOM), approximate methods and experiment. Analysis of the problem under strongly nonlinear loads, presence of lossy ground, multi-port structures, and multi-ton excitations are included to cover all the complex aspects. In one hand, the proposed modeling approach is in excellent agreement with other conventional techniques. On the other hand, the run time is considerably reduced.

Investigation of an NEA Diamond Vacuum Microtriode Array

1996 ◽  
Vol 423 ◽  
Author(s):  
C. W. Hatfield ◽  
G. L. Bilbro ◽  
A. S. Morris ◽  
P. K. Baumann ◽  
B. L. Ward ◽  
...  
Keyword(s):  
Space Charge ◽  
Applied Voltage ◽  
Circuit Simulation ◽  
Emission Current ◽  
Microwave Circuit ◽  
Electron Optics ◽  
Electrical Measurements ◽  
Simulation Data ◽  
Diamond Surfaces ◽  
Rf Amplifier

AbstractThe properties and characteristics of vacuum microtriodes based on NEA diamond surfaces were modelled. Specifically, an NEA diamond vacuum microtriode array was investigated using electrical measurements, electron optics software, and microwave circuit simulation. Data for emission current versus applied voltage for various anode-to-cathode distances for diamond NEA surfaces was analyzed and various parameters were extracted. Electron optics software was used to determine Fowler-Nordheim and space-charge-limited DC I-V characteristics for each microtriode. Microwave circuit simulation was done to determine the behavior of arrays of these vacuum microtriodes in an RF amplifier circuit.

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