Coupled-mode design of ferrite-loaded coupled-microstrip-lines section

Mazur, J.; Mazur, Mateusz; Michalski, Jerzy Julian

doi:10.1109/tmtt.2002.1006409

Cited by 20 publications

(9 citation statements)

References 9 publications

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“…Applying solution of (16) to coupled-mode method (CMM) a gyromagnetic coupling coefficients, propagation coefficients of ferrite modes and scattering matrix of CFCL junction can be determined [3,11,27]. In this approach the transversal electric and magnetic fields in the investigated ferrite guide are expressed in terms of basic guide field eigenfunctions e t,e(o) and h t,e(o) as follows: …”

Section: Cylindrical Ferrite Coupled Linementioning

confidence: 99%

“…The Maxwell's equations defined for CDCL and CFCL are combined together and after some mathematical manipulations we obtain similar to [3,27] set of coupled mode equations defining equivalent transmission line problem of CFCL:…”

Section: Cylindrical Ferrite Coupled Linementioning

confidence: 99%

“…Nonreciprocal devices have been extensively used in modern microwave and millimeter systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] or active elements such as amplifiers [16].…”

Section: Introductionmentioning

confidence: 99%

“…In order to obtain the nonreciprocal effects one needs to utilize the ferrite materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] or active elements such as amplifiers [16]. Recently, the longitudinally magnetized ferrite coupled strip- [2, 4-10, 15, 17, 18] or slotlines [14,19] are being developed and employed to realize integrated nonreciprocal devices.…”

Section: Introductionmentioning

confidence: 99%

“…The basic part of ferrite coupled line (FCL) devices is longitudinally magnetized FCL section obtained as a section of two coupled lines placed on ferrite substrate [1][2][3]. According to the coupled-mode model [1] in such section the gyromagnetic coupling occurs resulting in Faraday rotation effect.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

Kusiek¹,

Marynowski²,

Mazur³

2011

PIER

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Abstract-In this paper, a novel longitudinally magnetized cylindrical ferrite coupled line (CFCL) junction is proposed. In comparison to planar ferrite coupled line (FCL) configurations, which are well known in literature, in such structure the higher gyromagnetic coupling occurs. This allows to obtain the required in FCL devices Faraday rotation angle π/4 for the ferrite with shorter length and lower value of magnetization. As a result the total insertion losses in the ferrite section can be reduced using the proposed topology. In the analysis of the proposed CFCL junction a hybrid technique combining method of moments and coupled mode method (MoM/CMM) is applied. The results are compared with the ones obtained from commercial software HFSS and a good agreement is obtained.

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Section: Cylindrical Ferrite Coupled Linementioning

confidence: 99%

Section: Cylindrical Ferrite Coupled Linementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

Kusiek¹,

Marynowski²,

Mazur³

2011

PIER

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Propagation Constant of a Rectangular Waveguides Completely Full of Ferrite Magnetized Longitudinally

Sakli

Benzina

Aguili

et al. 2009

J Infrared Milli Terahz Waves

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This paper is an analysis of rectangular waveguide completely full of ferrite magnetized longitudinally. The analysis is based on the formulation of the transverse operator method (TOM), followed by the application of the Galerkin method. We obtain an eigenvalue equation system. The propagation constant of some homogenous and anisotropic waveguide structures with ferrite has been obtained. The results presented here show that the transverse operator formulation is not only an elegant theoretical form, but also a powerful and efficient analysis method, it is useful to solve a number of the propagation problems in electromagnetic. One advantage of this method is that it presents a fast convergence. Numerical examples are given for different cases and compared with the published results. A good agreement is obtained.

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Experimental and Numerical Analysis of Microwave Heating of Water and Oil Using a Rectangular Wave Guide: Influence of Sample Sizes, Positions, and Microwave Power

Cha-um

Rattanadecho

Pakdee

2009

Food Bioprocess Technol

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The heating process of water and oil using microwave oven with rectangular wave guide is investigated numerically and experimentally. The numerical model is validated with an experimental study. The transient Maxwell's equations are solved by using the finite difference time domain method to describe the electromagnetic field in the wave guide and sample. The temperature profiles and velocity field within sample are determined by the solution of the momentum, energy, and Maxwell's equations. In this study, the effects of physical parameters, e.g., microwave power, the position of sample in wave guide, size, and thickness of sample, are studied. The results of distribution of electric field, temperature profiles, and velocity field are presented in details. The results show that the mathematical models are in agreement with the experimental data. Conclusively, the mathematical model presented in this study correctly explains the phenomena of microwave heating within the liquid layer. Keywords Microwave heating . Rectangular wave guide . Mode TE 10 . Maxwell's equation . FDTD method Nomenclature C p specific heat capacity [J/(kg K)] E electric field intensity (V/m) f frequency of incident wave (Hz) g gravitational constant (m/s 2 ) H magnetic field intensity (A/m) P power (W) p pressure (Pa) Q local electromagnetic heat generation term (W/m 3 ) s Poynting vector (W/m 2Greek letters α thermal diffusivity (m 2 /s) β coefficient of thermal expansion (1/K) η absolute viscosity (Pa s) ε permittivity (F/m) l wavelength (m) μ magnetic permeability (H/m) υ velocity of propagation (m/s) ν kinematics viscosity (m 2 /s) ρ density (kg/m 3 ) σ electric conductivity (S/m) ω angular frequency (rad/s) ξ surface tension (N/m)

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Coupled-mode design of ferrite-loaded coupled-microstrip-lines section

Cited by 20 publications

References 9 publications

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

Investigations of Cylindrical Ferrite Coupled Line Junction Using Hybrid Technique

Propagation Constant of a Rectangular Waveguides Completely Full of Ferrite Magnetized Longitudinally

Experimental and Numerical Analysis of Microwave Heating of Water and Oil Using a Rectangular Wave Guide: Influence of Sample Sizes, Positions, and Microwave Power

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