Vidas Kalesinskas - Academia.edu (original) (raw)

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Papers by Vidas Kalesinskas

Semiconductor Science and Technology

2006 International Conference on Microwaves, Radar & Wireless Communications, 2006

ABSTRACT The dipole electromagnetic field with any temporal and spatial dependence is represented... more ABSTRACT The dipole electromagnetic field with any temporal and spatial dependence is represented by a couple of two specific time and space-limited functions. The functions are expanded in terms of discrete basis of Hermite-Gaussian functions. The dipole electromagnetic field is calculated applying electric and magnetic Hertzian vectors which temporal dependencies are expressed in finite or infinite summation of Hermite-Gaussian functions. The calculation of radiated time and space-limited dipole fields produced by a given Hertzian vector expressed in terms of the couple introduced function are presented and their properties are discussed.

Http Dx Doi Org 10 1080 00150198408015327, Feb 8, 2011

Materials Science in Semiconductor Processing

Phase Transit, 1983

Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency... more Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency range 9 to 80 GHz. The main resonant dielectric dispersion caused by the soft mode occurs in the microwave range. On approaching the Curie point, the frequency of the microwave soft mode varies according to v2 r = A(T - T 0) with A = 1.1 ×

12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195), 1998

ABSTRACT The paper presents a rigorous solution of the scattering problem by a circular dielectri... more ABSTRACT The paper presents a rigorous solution of the scattering problem by a circular dielectric and perfectly conducting cylinders of any radius and any height in the rectangular waveguide oriented perpendicularly to a wall. The method is based on the representation of fields in waveguide and dielectric medium by cylindrical eigenfunctions and application of boundary conditions on surfaces of the cylinder to evaluate the fields inside and outside the cylinder. The reflection and transmission coefficients are expressed through the fields. As an example the reflection and transmission coefficients versus frequency for various dielectric and metallic cylinders are computed. The comparison of numerical with experimental data is presented.

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT A simple method for solving the inverse medium problem to determine the complex dielectr... more ABSTRACT A simple method for solving the inverse medium problem to determine the complex dielectric permittivity of a dielectric material at microwave frequencies is presented. The arbitrarily shaped dielectric sample is considered to be placed in a rectangular waveguide. The finite-difference technique and harmonic functions are applied to get a system of linear equations with measured reflection and/or transition coefficients added and solved through the eigenvalue problem. An algorithm to distinguish proper results from the system eigenvalues is defined by considering numerical solution properties. The system is tested using another method

Microwave Physics and Techniques, 1997

ABSTRACT The paper is devoted to the problem of scattering of plane electromagnetic wave by trans... more ABSTRACT The paper is devoted to the problem of scattering of plane electromagnetic wave by transversely magnetized ferrite cylinder. Exact analytical expressions for all partial cylindrical modes are obtained by solving Maxwell’s equations for transversely magnetized ferrite medium in cylindrical coordinate system. They are represented as the power series expansion and then are used to formulate and to solve the boundary problem. Numerical calculations of scattering patterns are also presented. Particular attention is paid to the possibility to control the scattering pattern by the external magnetic field.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009

Phase Transitions, 1983

Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency... more Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency range 9 to 80 GHz. The main resonant dielectric dispersion caused by the soft mode occurs in the microwave range. On approaching the Curie point, the frequency of the microwave soft mode varies according to v2 r = A(T - T 0) with A = 1.1 ×

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004

The CERN RD39 Collaboration is developing super-radiation hard cryogenic Si detectors for applica... more The CERN RD39 Collaboration is developing super-radiation hard cryogenic Si detectors for applications in experiments of the LHC and the future LHC Upgrade. Radiation hardness up to the fluence of 1016neq/cm2 is required in the future experiments. Significant improvement in the radiation hardness of silicon sensors has taken place during the past years. However, 1016neq/cm2 is well beyond the radiation

International Journal of Infrared and Millimeter Waves, 1997

International Journal of Infrared and Millimeter Waves, 1996

International Journal of Infrared and Millimeter Waves, 1995

Japanese Journal of Applied Physics, 1985

Semiconductor Science and Technology

2006 International Conference on Microwaves, Radar & Wireless Communications, 2006

ABSTRACT The dipole electromagnetic field with any temporal and spatial dependence is represented... more ABSTRACT The dipole electromagnetic field with any temporal and spatial dependence is represented by a couple of two specific time and space-limited functions. The functions are expanded in terms of discrete basis of Hermite-Gaussian functions. The dipole electromagnetic field is calculated applying electric and magnetic Hertzian vectors which temporal dependencies are expressed in finite or infinite summation of Hermite-Gaussian functions. The calculation of radiated time and space-limited dipole fields produced by a given Hertzian vector expressed in terms of the couple introduced function are presented and their properties are discussed.

Http Dx Doi Org 10 1080 00150198408015327, Feb 8, 2011

Materials Science in Semiconductor Processing

Phase Transit, 1983

Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency... more Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency range 9 to 80 GHz. The main resonant dielectric dispersion caused by the soft mode occurs in the microwave range. On approaching the Curie point, the frequency of the microwave soft mode varies according to v2 r = A(T - T 0) with A = 1.1 ×

12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195), 1998

ABSTRACT The paper presents a rigorous solution of the scattering problem by a circular dielectri... more ABSTRACT The paper presents a rigorous solution of the scattering problem by a circular dielectric and perfectly conducting cylinders of any radius and any height in the rectangular waveguide oriented perpendicularly to a wall. The method is based on the representation of fields in waveguide and dielectric medium by cylindrical eigenfunctions and application of boundary conditions on surfaces of the cylinder to evaluate the fields inside and outside the cylinder. The reflection and transmission coefficients are expressed through the fields. As an example the reflection and transmission coefficients versus frequency for various dielectric and metallic cylinders are computed. The comparison of numerical with experimental data is presented.

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2000

ABSTRACT A simple method for solving the inverse medium problem to determine the complex dielectr... more ABSTRACT A simple method for solving the inverse medium problem to determine the complex dielectric permittivity of a dielectric material at microwave frequencies is presented. The arbitrarily shaped dielectric sample is considered to be placed in a rectangular waveguide. The finite-difference technique and harmonic functions are applied to get a system of linear equations with measured reflection and/or transition coefficients added and solved through the eigenvalue problem. An algorithm to distinguish proper results from the system eigenvalues is defined by considering numerical solution properties. The system is tested using another method

Microwave Physics and Techniques, 1997

ABSTRACT The paper is devoted to the problem of scattering of plane electromagnetic wave by trans... more ABSTRACT The paper is devoted to the problem of scattering of plane electromagnetic wave by transversely magnetized ferrite cylinder. Exact analytical expressions for all partial cylindrical modes are obtained by solving Maxwell’s equations for transversely magnetized ferrite medium in cylindrical coordinate system. They are represented as the power series expansion and then are used to formulate and to solve the boundary problem. Numerical calculations of scattering patterns are also presented. Particular attention is paid to the possibility to control the scattering pattern by the external magnetic field.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009

Phase Transitions, 1983

Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency... more Microwave dielectric investigations of SbS0.7Se0.3 I crystals were carried out over the frequency range 9 to 80 GHz. The main resonant dielectric dispersion caused by the soft mode occurs in the microwave range. On approaching the Curie point, the frequency of the microwave soft mode varies according to v2 r = A(T - T 0) with A = 1.1 ×

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004

The CERN RD39 Collaboration is developing super-radiation hard cryogenic Si detectors for applica... more The CERN RD39 Collaboration is developing super-radiation hard cryogenic Si detectors for applications in experiments of the LHC and the future LHC Upgrade. Radiation hardness up to the fluence of 1016neq/cm2 is required in the future experiments. Significant improvement in the radiation hardness of silicon sensors has taken place during the past years. However, 1016neq/cm2 is well beyond the radiation

International Journal of Infrared and Millimeter Waves, 1997

International Journal of Infrared and Millimeter Waves, 1996

International Journal of Infrared and Millimeter Waves, 1995

Japanese Journal of Applied Physics, 1985