ELECTROMAGNETIC WAVES PIER 39. Progress In Electromagnetics Research

Transcription

1 ELECTROMAGNETIC WAVES PIER 39 Progress In Electromagnetics Research

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3 ELECTROMAGNETIC WAVES PIER 39 Progress In Electromagnetics Research ChiefEditor: J. A. Kong EMW Publishing Cambridge, Massachusetts, USA

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5 CONTENTS Chapter 1. TIME-DOMAIN EFIE, MFIE, AND CFIE FORMULATIONS USING LAGUERRE POLYNOMIALS AS TEMPORAL BASIS FUNCTIONS FOR THE ANALYSIS OF TRANSIENT SCATTERING FROM ARBITRARY SHAPED CONDUCTING STRUCTURES B. H. Jung, Y.-S. Chung, and T. K. Sarkar 1 Introduction Formulation TD-EFIE TD-MFIE TD-CFIE Current and Far Field An Alternative Formulation TD-EFIE TD-MFIE TD-CFIE Current and Far Field Numerical Examples Spectrum in the Non-Resonance Region Responses Due to Wide-Band Incident Waveform Conclusion Appendix A References Chapter 2. FDTD MODELING OF A VIBRATING INTRINSIC REVERBERATION CHAMBER N. K. Kouveliotis, P. T. Trakadas, and C. N. Capsalis 1 Introduction VIRC Modeling Method Field Uniformity Field Distribution Conclusions References v

6 Chapter 3. GREEN S FUNCTION EXPANSIONS IN DYADIC ROOT FUNCTIONS FOR SHIELDED LAYERED WAVEGUIDES G. W. Hanson, A. I. Nosich, and E. M. Kartchevski 1 Introduction Formulation Nontrivial Modal Degeneracies Dyadic Green s Functions and Dyadic Residues Dyadic Eigenfunctions Dyadic Root Functions Numerical Results Conclusions Acknowledgment References Chapter 4. AN EFFECTIVE POWER SYNTHESIS TECHNIQUE FOR SHAPED, DOUBLE-REFLECTOR MULTIFEED ANTENNAS O. M. Bucci, A. Capozzoli, and G. D Elia 1 Introduction Statement of the Problem and Solution Strategy The Two Phases of the Synthesis Problem Main Reflector and Subreflector Aperture Field Factorization Splitting the Synthesis Problem The Synthesis Algorithm Numerical Analysis Conclusions Appendix A Appendix B Appendix C References Chapter 5. COMPRESSION OF POLARIMETRIC SYNTHETIC APERTURE RADAR DATA S. El Assad, X. Morin, D. Barba, and V. Slavova 1 Introduction vi

7 2 Description of the Measurement Device STRADI VL and of the Chosen Scenes Radar Signal Statistics Means and Variances Histograms Auto-correlation and Inter-correlation Developed and Evaluated Methods of Compression LBG Algorithm The Kohonen s Self Organizing Feature Maps Conclusion Acknowledgment References Chapter 6. SIMPLE TIME-DOMAIN EXPRESSIONS FOR PREDICTION OF CROSSTALK ON COUPLED MICROSTRIP LINES C. C. Chai, B. K. Chung, and H. T. Chuah 1 Introduction The Proposed Simple Time-Domain Crosstalk Expressions Determination of the Polynomial Coefficients Deviation Analysis Saturation of the Far-end Crosstalk The Effect of Losses and Dispersion on Crosstalk Noise The Valid Frequency Range for Lossless and Dispersionless Assumption Incorporation of Losses and Dispersion Effect in Far-end Crosstalk Prediction Procedure for Prediction of Crosstalk Comparisons with Results from Field Solver and other Models Comparisons with Measurement Results Conclusion References vii

8 Chapter 7. A GENETIC ALGORITHM/METHOD OF MOMENTS APPROACH TO THE OPTIMIZATION OF AN RF COIL FOR MRI APPLICATIONS THEORETICAL CONSIDERATIONS D. Yau and S. Crozier 1 Introduction Theory and Results Conclusion Acknowledgment References Chapter 8. OSCILLATIONS IN SLOTTED RESONATORS WITH SEVERAL SLOTS: APPLICATION OF APPROXIMATE SEMI-INVERSION Yu. Shestopalov, Y. Okuno, and N. Kotik 1 Introduction Semi-Inversion of Integral Operators Semi-Inversion of Meromorphic Integral OVFs: One Interval of Integration Two Intervals of Integration: Approximate Semi-Inversion of the Principal Part Estimates for the Inner Product Approximate Determination of Characteristic Numbers Rectangular Slotted Cavities Rectangular Cavity with One Slot Rectangular Cavity with Two Slots in One Wall Rectangular Cavity with Two Slots in Opposite Walls Critical Points and Mode Coupling Numerical and Discussion Regular Regimes Critical Regimes: Interaction of Oscillations Conclusion Acknowledgment Appendix A Appendix B References viii

9 Chapter 9. HOMOGENIZATION OF AN ARRAY OF S-SHAPED PARTICLES LOCATED ON A DIELECTRIC INTERFACE C. R. Simovski, B. Sauviac, and S. L. Prosvirnin 1 Introduction Description of the Array Homogenization of the Structure Effective Permittivity of an HomogenizedLayer and Comparison with Numerical Simulation Conclusion References Chapter 10. MODES IN A HARD SURFACE WAVEGUIDE WITH UNIAXIALLY ANISOTROPIC CHIRAL MATERIAL FILLING S. F. Mahmoud and A. J. Viitanen 1 Introduction Theory Eigenfields Reflection andtransmission at Isotropic and Anisotropic Chiral Interface Scattering from a Uniaxial Chiral Waveguide to an Isotropic Waveguide with HS Walls Conclusion References Chapter 11. TOPOLOGICAL WAVELENGTH SHIFTS [ELECTROMAGNETIC FIELD IN LOBACHEVSKIAN GEOMETRY] J. G. von Brzeski and V. von Brzeski 1 Introduction Some Facts About Lobachevskian Geometry Geometric Analysis of Spectral Shifts due to Lobachevskian Space. Methodof Horospheres Representation of Lobachevskian Geometry by Velocity Space. Significance of Horospheres for Physics Representation of Lobachevskian Geometry by Configuration Space Lobachevskian Vacuum ix

10 6 The Lower Bound of Experimental Detection of the Curvature of Hyperbolic Vacuum Homogeneous Space of Horospheres. Application to Cosmic Microwave Background Radiation (CMBR) Conclusions Acknowledgment References Chapter 12. FINITE DIFFERENCE TIME DOMAIN MODELING OF LIGHT AMPLIFICATION IN ACTIVE PHOTONIC BAND GAP STRUCTURES A. D Orazio, V. De Palo, M. De Sario, V. Petruzzelli, and F. Prudenzano 1 Introduction FDTD Modeling of PBG Structures with Lorentzian Gain Media D PBG Structure Simulation Results D PBG Structure Numerical Results Conclusion Appendix A. 2D FDTD Algorithm for Active Materials 326 Appendix B. PML Termination for Conductive Dispersive Media References x