Analysis Of Rotationally Symmetrical Antenna With Wider Beamwidth
IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - ANTENNAS: GATEWAYS TO THE GLOBAL NETWORK, VOLS 1-4（1998）
Abstract
The authors propose an oblate spheroidal antenna (OSA) in order to widen its beamwidth. This antenna is numerically and experimentally analysed. The OSA consists of of a linearly polarised circular patch microstrip antenna (MSA) and upper and lower oblate spheroidal conductors. The substrate of the MSA is truncated at the edge of the patch. In the numerical analysis, the electromagnetic fields within the antenna cavity are expanded by the modal functions and their unknown expansion coefficients are determined by the electric and magnetic field integral equations.
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Key words
electromagnetic field,microstrip antenna,numerical analysis,electric field integral equation,electromagnetic fields,polarization,substrate,integral equation,modal analysis,beamwidth,microstrip antennas,voltage
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