Development of a Non-Iterative Macromodeling Technique by Data Integration and Least Square Method

Sedaghat, Mostafa; Firouzeh, Zaker Hossein; Aliakbarian, Hadi

doi:10.5829/ije.2021.34.11b.04

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…It is helpful to note that the condition number is used to measure the sensitivity of the proposed method concerning the discretization error. More details about the acceptable range of the condition number can be found in 27 , 28 . For all examples, the condition number of the coefficient matrix is in an acceptable range, which means the low sensitivity of our proposed technique.…”

Section: Resultsmentioning

confidence: 99%

A new method for analyzing non-uniform guiding structures

Yasi

Boozari

Alijani

et al. 2023

Sci Rep

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This paper presents a new technique for analyzing a non-uniform transmission line (NUTL). This method expands the differential equations of voltage and current as the slope functions. Then, differential equations are solved using the explicit Runge–Kutta technique with the fourth-order method with four stages. It is shown that the proposed method can be used not only for analyzing the NUTL but also for analyzing the no-uniform waveguides (NUWG). Additionally, it is shown that the sensitivity of the proposed method concerning the discretization error is suitable. Several theoretical and practical NUTLs and NUWG are investigated to verify the proposed method’s accuracy and advantages. The performance of the proposed method is compared with those obtained by the other popular techniques, such as uniform cascaded sections (UCS).

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Section: Resultsmentioning

confidence: 99%

A new method for analyzing non-uniform guiding structures

Yasi

Boozari

Alijani

et al. 2023

Sci Rep

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“…Directional couplers are developed as passive microwave structures consisting of three or four ports designed for arbitrary power dividing ratios, which have been used in various microwave systems including communication and measurement systems [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Development of a New Backward Directional Coupler Based on Perforated Substrates

Karimian-Sarakhs¹,

Neshati²

2023

IJE

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In this paper, two wideband 10 dB backward directional couplers based on artificial perforated substrates over the frequency range of 25-35 GHz and 32-38 GHz are developed. An analytical method is proposed to design the coupler geometrical parameters. The theoretical modeling is established based on the coupled version of the transmission line (TL) theory using the extended version of the ABCD matrix for four ports microwave network. It is shown that using the proposed method, all required parameters of the directional coupler are determined using the per-unit-length of the applied lines. The geometrical parameters of primary designed couplers are optimized using the particle swarm optimization (PSO) procedure to improve the performance of couplers. The designed couplers are also simulated using High Frequency Structure Simulator (HFSS) software. Moreover, sensitivity analysis is carried out to investigate the effect of fabrication imperfections of the proposed couplers. The obtained results show that the simulated results agree well with the theoretical ones and a low insertion loss (IL) with high return loss is obtained over a wide frequency range bandwidth.

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Development of a Non-Iterative Macromodeling Technique by Data Integration and Least Square Method

Cited by 2 publications

References 28 publications

A new method for analyzing non-uniform guiding structures

A new method for analyzing non-uniform guiding structures

Development of a New Backward Directional Coupler Based on Perforated Substrates

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