scholarly journals Frequency domain behavior of S ‐parameters piecewise‐linear fitting in a digital‐wave framework

2021 ◽  
Author(s):  
Piero Belforte ◽  
Domenico Spina ◽  
Maria Denise Astorino ◽  
Giulio Antonini ◽  
Maurizio Ferrari
Keyword(s):  
Frequency Domain ◽  
Piecewise Linear ◽  
Linear Fitting ◽  
S Parameters ◽  
Fitting In

Piecewise linear fitting in dynamic micro-CT

2018 ◽  
Vol 139 ◽  
pp. 259-268 ◽  
Author(s):  
Marjolein Heyndrickx ◽  
Matthieu Boone ◽  
Thomas De Schryver ◽  
Tom Bultreys ◽  
Wannes Goethals ◽  
...  
Keyword(s):  
Piecewise Linear ◽  
Micro Ct ◽  
Linear Fitting ◽  
Fitting In

Automated Framework for Time-Domain Piecewise-Linear Fitting Method Based on Digital Wave Processing of $S$ -Parameters

2020 ◽  
Vol 67 (1) ◽  
pp. 235-248
Author(s):  
Piero Belforte ◽  
Domenico Spina ◽  
Luigi Lombardi ◽  
Giulio Antonini ◽  
Tom Dhaene
Keyword(s):  
Time Domain ◽  
Piecewise Linear ◽  
Linear Fitting ◽  
Fitting Method ◽  
S Parameters

A Pattern Approximation Method for Distorted Reflector Antennas Using Piecewise Linear Fitting of the Exponential Error Term

2015 ◽  
Vol 63 (10) ◽  
pp. 4546-4551 ◽  
Author(s):  
Peiyuan Lian ◽  
Baoyan Duan ◽  
Wei Wang ◽  
Congsi Wang ◽  
Shuxin Zhang ◽  
...  
Keyword(s):  
Approximation Method ◽  
Error Term ◽  
Piecewise Linear ◽  
Reflector Antennas ◽  
Linear Fitting

Improvement of the envelope – transient S-parameters' simulation in circuit and system simulation

2011 ◽  
Vol 3 (6) ◽  
pp. 657-665
Author(s):  
Hassan Mehdi ◽  
Sebastien Mons ◽  
Abderrazak Bennadji ◽  
Edouard Ngoya ◽  
Raymond Quere
Keyword(s):  
Frequency Domain ◽  
Mimo Systems ◽  
Mimo System ◽  
System Simulation ◽  
Control Flow ◽  
Behavioral Modeling ◽  
System Level ◽  
Synthesis Process ◽  
S Parameters ◽  
High Level

This paper focuses on the behavioral modeling of the passive RF blocks from frequency-domain samples. This work is based on vector fitting (VF) approach which is a robust method for MIMO system identification in the frequency domain. This paper addresses firstly the problem of convergence using envelope transient (ET) on complex circuits, i.e. power amplifiers (PAs), where linear sub-circuits are widely described through S-parameters matrices derived from ElectroMagnetic (EM) simulations. An alternative way leads to combine VF method with an RLC synthesis process at the circuit level. This approach is validated on a simple circuit case and generalized to MIMO systems. Second application is the behavioral modeling of MIMO blocks at system level in a high-level spice-like system simulation tool which allows “Control Flow” simulations. The proposed approach combines on one hand the VF method with and impulse responses evaluation on the other hand. In consequence, bilateral behavioral models of MIMO system can be efficiently achieved irrespective of the number of access. This method is validated at once on simple and complex MIMO blocks. As a result, the topological behavioral modeling of complex PAs, which distinguish linear sub-circuits and nonlinear ones, is now possible in a high-level time-domain CAD tool.

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