Title :
Leaky and surface waves in anisotropic printed antenna structures
Author :
Peixeiro, C. ; Barbosa, A.M.
Author_Institution :
CAPS/DEEC, Inst. Superior Tecnico, Lisbon, Portugal
fDate :
5/1/1992 12:00:00 AM
Abstract :
The behavior of the leaky- and surface-wave modes supported by single- and double-layered grounded anisotropic dielectric structures is investigated. Simple low-frequency and high-frequency asymptotic formulas are derived for the wavenumbers. The effects of dielectric anisotropy and losses on the cutoff frequency of the TM and TE surface waves and on the H-plane radiation pattern of a leaky-wave antenna are examined
Keywords :
antenna radiation patterns; guided electromagnetic wave propagation; microstrip antennas; H-plane radiation pattern; LF asymptotic formulas; TE surface waves; TM surface waves; anisotropic printed antenna structures; cutoff frequency; double layered dielectric; grounded anisotropic dielectric structures; high-frequency asymptotic formulas; leaky waves; leaky-wave antenna; single layered dielectric; wavenumbers; Anisotropic magnetoresistance; Antenna radiation patterns; Cutoff frequency; Dielectric losses; Dielectric substrates; Equations; Fourier transforms; Leaky wave antennas; Surface waves; Tellurium;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
