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

Volume

49

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1363

Lastpage

1369

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.954924

Filename

954924