Title :
A Direct Time-Domain FDTD Near-Field-to-Far-Field Transform in the Presence of an Infinite Grounded Dielectric Slab
Author :
Capoglu, Ilker R. ; Smith, Glenn S.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA
Abstract :
A direct time-domain near-field-to-far-field transform (NFFFT) is developed that is applicable to the finite-difference time-domain analysis of radiation in the presence of a non-dispersive, infinite, grounded dielectric slab. With minor modification and/or simplification, the results can also be applied to the dielectric half-space and the infinite ungrounded dielectric slab. A few time-domain radiation examples involving microstrip transmission lines are used to illustrate the method
Keywords :
antenna radiation patterns; dielectric bodies; finite difference time-domain analysis; inhomogeneous media; microstrip lines; transforms; waveguide antennas; FDTD; dielectric half-space; finite-difference time-domain analysis; infinite grounded dielectric slab; near-field-to-far field transform; nondispersive slab; time-domain radiation; Dielectric losses; Dielectric substrates; Finite difference methods; Frequency; Green function; Microstrip; Near-field radiation pattern; Slabs; Time domain analysis; Transmission lines; Finite-difference time-domain (FDTD); microstrip; nonhomogeneous media;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.886548
