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This paper presents the design of a multi-functional miniaturized slot antenna system in S-band for micro/nano-satellites. The antenna system makes use of the spacecraft structure allowing a high integration level within the satellite surface. The same antenna system is able to produce three different operating modes: a) omnidirectional full-coverage, b) one directive beam, and c) four tracking-lobes...
A technique for calculating radiation patterns of reflector antennas with curvilinear impedance peripheral flanges is presented. It is based on the uniform asymptotic theory with numerical diffraction coefficients and on the equivalent edge currents method. The use of numerical diffraction coefficients allows to account near-field terms in the incident field and nonuniform impedance distributions...
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