Title :
A study of conformal microstrip antennas
Author :
Oberhart, M.L. ; Lo, Y.T. ; Clark, V.A.
Author_Institution :
Illinois Univ., Urbana, IL, USA
Abstract :
A method of analyzing the radiation properties of conformal microstrip patch antennas is presented. The technique utilizes the uniform theory of diffraction (UTD) in conjunction with the cavity model theory of microstrip antennas. The structures under consideration are composed of patch antennas which are mounted upon finitely dimensioned conducting bodies or surfaces. Emphasis is on the efficient evaluation of radiated fields and the application of the analysis to a variety of canonically shaped bodies including truncated cones, cylinders, and plates. Using this procedure, the diffractive effects of finite, microstrip antenna ground planes have been examined in the study of circularly polarized path antennas. It has been determined that appropriate selection of ground plane dimensions can appreciably reduce the spatial variation of axial ratio and tilt angle.<>
Keywords :
antenna earths; antenna radiation patterns; electromagnetic wave diffraction; electromagnetic wave polarisation; microstrip antennas; UTD; axial ratio; canonically shaped bodies; cavity model theory; circularly polarized path antennas; conducting bodies; conducting surfaces; conformal microstrip patch antennas; cylinders; diffractive effects; ground plane dimensions; plates; radiated fields; radiation properties; spatial variation; tilt angle; truncated cones; uniform theory of diffraction; Antenna radiation patterns; Antenna theory; Antennas and propagation; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Physical theory of diffraction;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221427
