Title :
Coupling and radiation through “V-shaped” narrow slots using the FDTD method
Author :
Hernández-López, M. Auxiliadora ; Quintillán, Mercedes
Author_Institution :
Dept. de Fisica, Salamanca Univ., Spain
fDate :
10/1/2001 12:00:00 AM
Abstract :
A “V-shaped” slot in the narrow wall of a rectangular waveguide is presented as a coupling element. Three- and four-port coupler parameters and the radiation characteristics of the slot were investigated using the finite-difference time-domain (FDTD) method. Two approximate numerical-analytical procedures are proposed to reduce the computer requirements and predict multislot device characteristics. A clear improvement in four-port coupler parameters was observed following the incorporation of a thin dielectric layer
Keywords :
S-parameters; antenna radiation patterns; dielectric-loaded antennas; dielectric-loaded waveguides; directional couplers; finite difference time-domain analysis; linear antenna arrays; rectangular waveguides; slot antenna arrays; slot antennas; FDTD method; V-shaped narrow slots; approximate numerical-analytical procedures; coupling element; finite-difference time-domain method; four-port coupler parameters; multislot device characteristics; radiation characteristics; rectangular waveguide; thin dielectric layer; three-port coupler parameters; Dielectrics; Electromagnetic coupling; Electromagnetic waveguides; Finite difference methods; Integral equations; Mutual coupling; Rectangular waveguides; Resonance; Shape; Time domain analysis;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
