scholarly journals Parameter Extraction for Equivalent Circuit Model of RF Devices Based on a Hybrid Optimization Method

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1133 ◽  
Author(s):  
Zhimin Guan ◽  
Peng Zhao ◽  
Qizhong Lao ◽  
Xianbing Wang ◽  
Gaofeng Wang
Keyword(s):  
Equivalent Circuit ◽  
Global Minimum ◽  
Extraction Procedure ◽  
Equivalent Circuit Model ◽  
Optimization Method ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Spiral Inductor ◽  
Rf Devices ◽  
Global Minimum Search

One major difficulty of parameter extraction for an equivalent circuit lies in applying an optimization algorithm to efficiently approach the global minimum. Traditional genetic algorithm (GA) is able to find the global minimum but it has very low convergence rate. On the other hand, direct search method may be easily trapped in local minima. In this work, an improved parameter extraction method which is capable of effectively performing the global minimum search is proposed. This method combines GA and Powell’s method to efficiently determine circuit elements of an equivalent circuit model. A spiral inductor and an interdigital capacitor are used as design examples to illustrate the extraction procedure and validate the proposed hybrid method.

scholarly journals CRLH Transmission Lines for Telecommunications: Fast and Effective Modeling

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Juanjuan Gao ◽  
Guizhen Lu
Keyword(s):  
Resonance Frequency ◽  
Equivalent Circuit ◽  
Transmission Lines ◽  
Cell Model ◽  
Extraction Procedure ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Unit Cell ◽  
Parallel Resonance

A different parameter extraction approach based on zero immittances for composite right/left-handed (CRLH) structure is presented. For lossless unit cell equivalent circuit model, LC parameters of series and parallel branches are extracted according to series resonance frequency and parallel resonance frequency, respectively. This approach can be applied to symmetric and unbalanced CRLH structures. The parameter extraction procedure is provided and validated by T-type unit cell model. The responses of distributed prototype and extracted equivalent LC circuit model are in good agreement. The equivalent circuit modeling can improve the degree of freedom in the CRLH TLs design. This parameter extraction method provides an effective and straightforward way in CRLH metamaterials design and applications in telecommunication systems.

Modeling and analysis of dielectric materials by using gradient-descent optimization method

2017 ◽  
Vol 08 (01) ◽  
pp. 1750014
Author(s):  
B. B. Alagoz ◽  
H. Z. Alisoy ◽  
M. Koseoglu ◽  
S. Alagoz
Keyword(s):  
Equivalent Circuit ◽  
Gradient Descent ◽  
Model Fitting ◽  
Equivalent Circuit Model ◽  
Optimization Method ◽  
Dielectric Materials ◽  
Circuit Model ◽  
Modeling And Analysis ◽  
Modeling Analysis ◽  
Equivalent Circuit Parameters

This study presents a numerical method based on parallel RC equivalent circuit model fitting methodology for analysis and modeling of dielectric materials. The proposed method employs gradient-descent optimization method (GDOM) to estimate parallel RC equivalent circuit model from current waveforms by minimizing sum of squared difference (SSD) error. Estimation of parallel RC equivalent circuit parameters from measured current waveforms provides a useful tool for identification, simulation and analysis of dielectric materials. Moreover, applications of the proposed method for time and frequency analyses of dielectric materials are demonstrated numerically. Numerical simulations were presented to discuss efficiency of the proposed method for modeling, analysis and monitoring of insulator materials.

scholarly journals Distributed Small-Signal Equivalent Circuit Model and Parameter Extraction for SiGe HBT

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 5865-5873
Author(s):  
Yabin Sun ◽  
Ziyu Liu ◽  
Xiaojin Li ◽  
Yanling Shi
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Small Signal ◽  
Sige Hbt

Validation and parameter extraction of a compact equivalent circuit model for an RF CMOS transistor

2020 ◽  
Vol 19 (4) ◽  
pp. 1471-1477
Author(s):  
Junaid Ahmed Uqaili ◽  
Rabnawaz Sarmad Uqaili ◽  
Saleemullah Memon ◽  
Kamlesh Kumar Soothar ◽  
Kamran Ali Memon ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Rf Cmos ◽  
Cmos Transistor
Sign in / Sign up

Export Citation Format

Share Document