Title :
Moment method analysis of infinite arrays of EM-coupled rectangular microstrip antennas
Author_Institution :
Rome Air Dev. Center, Hanscom AFB, MA, USA
Abstract :
The author presents a full wave analysis which is used to study the bandwidth and scan impedance of an infinite array of EM-coupled rectangular patches as a function of substrate parameters, grid spacing, and element geometries. The spectral dyadic Green´s function for an electric dipole source embedded in a two-layer grounded dielectric slab was used. A variety of EM-coupled geometries were evaluated numerically. To validate analytical results, a waveguide simulator was constructed. The microstrip feedline does not image properly in a rectangular simulator, which requires an element with two planes of symmetry. Therefore, a coaxial probe was used to feed the lower patch at an edge, and an excellent agreement was obtained.<>
Keywords :
Green´s function methods; antenna arrays; microstrip antennas; rectangular waveguides; EM-coupled rectangular microstrip antennas; coaxial probe; electric dipole source; element geometries; grid spacing; microstrip feedline; rectangular patches; spectral dyadic Green´s function; substrate parameters; two-layer grounded dielectric slab; waveguide simulator; Analytical models; Bandwidth; Coaxial components; Dielectric substrates; Geometry; Green´s function methods; Impedance; Microstrip; Moment methods; Slabs;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94242
