Title :
Parametric analysis of slot-loaded trapezoidal patch antennas
Author :
Vegni, Claudio ; Bilotti, Filiberto
Author_Institution :
Alenia Spazio SpA, Roma, Italy
fDate :
9/1/2002 12:00:00 AM
Abstract :
Slot-loaded trapezoidal patch antennas are analyzed in order to achieve a multifrequency operation. A moment method formulation based on new analytical entire domain basis functions is developed and compared to the one involving the Rao-Wilton-Glisson (1982) RWG triangular discretization. The numerical results obtained through the new efficient implemented code are compared to the measurements showing a good agreement. A parametric analysis of such antennas is also presented leading to useful design graphs showing the main antenna properties (resonance frequencies, cross-polarization levels, matching, etc.) as a function of the patch geometrical dimensions, symmetric collocation of the slots on the patch, and slot dimensions.
Keywords :
electric field integral equations; electromagnetic wave polarisation; method of moments; microstrip antennas; multifrequency antennas; slot antenna arrays; slot antennas; EFIE; RWG triangular discretization; Rao-Wilton-Glisson basis/test functions; Rao-Wilton-Glisson triangular discretization; antenna properties; cross-polarization levels; design graphs; efficient implemented code; electric field integral equation; entire domain basis functions; full-wave analysis; geometrical dimensions; integral equation; matching; microstrip transmission line; moment method; multifrequency operation; parametric analysis; resonance frequencies; slot dimensions; slot-loaded trapezoidal patch antennas; symmetric slots collocation; Bandwidth; Frequency; Geometry; Microstrip antennas; Moment methods; Patch antennas; Radar antennas; Resonance; Slot antennas; Synthetic aperture radar;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.802153
