Title :
Whispering-gallery and Luneburg-lens effects in a beam-fed circularly layered dielectric cylinder
Author :
Boriskin, Artem V. ; Nosich, Alexander I.
Author_Institution :
Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine
fDate :
9/1/2002 12:00:00 AM
Abstract :
The whispering-gallery (WG) mode excitation and Luneburg (1941) lens (LL) effects are studied for a lossy circularly layered dielectric cylinder illuminated by a beam field. The latter is simulated by the complex source-point (CSP) beam. Exact series solution to the wave scattering problem is used to obtain the far-field patterns and directivity. The WG mode effect is shown to undermine the LL performance.
Keywords :
antenna radiation patterns; dielectric bodies; electromagnetic wave scattering; inhomogeneous media; lens antennas; series (mathematics); EM wave scattering; Luneburg-lens; beam field; beam-fed circularly layered dielectric cylinder; complex source-point beam; cylindrical functions; dielectric lenses; directivity; exact series solution; far-field patterns; lens antenna; lossy circularly layered dielectric cylinder; microwave range; whispering-gallery mode excitation; Dielectric losses; Electromagnetic scattering; Engine cylinders; Equations; Geometry; Lenses; Microwave devices; Optical filters; Optical resonators; Optical scattering;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.801270
