Title :
A method-of-moments study of strip dipole antennas in rectangular waveguide
Author :
Adams, Andrew R ; Pollard, Roger D. ; Snowden, Christopher M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ., UK
fDate :
10/1/1997 12:00:00 AM
Abstract :
A theoretical and experimental study of strip dipole antennas located on a supporting dielectric slab mounted transversely in rectangular waveguide is presented. Galerkin´s method is used in the full-wave solution of an integral equation for each antenna´s surface-current density using the Green´s function for the slab-loaded waveguide. The paper is motivated by the need for multiport-network models to aid the development of multiple-device power-combining circuits in rectangular waveguide. The design data presented here for single antennas should prove useful for planar-mixer and oscillator circuits. The presence of slab modes is noted and the slab-mode resonant frequencies are predicted. Validation of the numerical models is provided by scattering experiments on shorted antennas, and excellent agreement is obtained in the range of 8.0-12.5 GHz
Keywords :
Galerkin method; Green´s function methods; antenna theory; current density; dielectric-loaded waveguides; dipole antenna arrays; integral equations; method of moments; rectangular waveguides; waveguide antenna arrays; 8 to 12.5 GHz; Galerkin method; Green function; dielectric slab support; full-wave solution; integral equation; method-of-moments study; multiple-device power-combining circuits; multiport-network models; planar oscillator circuits; planar-mixer circuits; rectangular waveguide; scattering experiments; shorted antennas; slab modes; slab-loaded waveguide; slab-mode resonant frequencies; strip dipole antennas; surface-current density; Antenna theory; Circuits; Dielectrics; Dipole antennas; Integral equations; Moment methods; Rectangular waveguides; Slabs; Surface waves; Waveguide theory;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
