Title :
Analysis of microstrip antennas on a curved surface using the conformal grids FD-TD method
Author :
Kashiwa, T. ; Onishi, T. ; Fukai, I.
Author_Institution :
Dept. of Electr. Eng., Hokkaido Univ., Sapporo, Japan
fDate :
June 28 1993-July 2 1993
Abstract :
Rectangular microstrip antennas (MSAs) mounted on a curved surface are analyzed using the curvilinear FDTD (finite-difference time-domain) method. In this analysis, the cylindrical surface is given exclusive consideration, as construction of a physical model for comparison is simple. The calculated results were compared with experimental results, and the degree of agreement appears to confirm the validity of the method and the predictions. The results for MSAs on curved surfaces are compared with those for planar MSAs. It was shown that the properties of the input impedance and directivity vary somewhat from those of the flat antenna due to bending. The curvilinear FDTD method seems to hold great promise for use in CAD (computer-aided design) systems in conjunction with mesh generators.<>
Keywords :
CAD; antenna radiation patterns; bending; conformal antennas; directive antennas; electric impedance; finite difference time-domain analysis; mesh generation; microstrip antennas; CAD; bending; computer-aided design; conformal grids; curved surface; curvilinear FDTD method; cylindrical surface; directivity; finite-difference time-domain; input impedance; mesh generators; microstrip antennas; Boundary conditions; Communication equipment; Dielectric losses; Dielectric substrates; Finite difference methods; Microstrip antennas; Moment methods; Shape; Stability; Surface impedance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385408
