The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
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...
A problem of radiation of square spiral antenna placed on an aircraft fuselage is considered. The aircraft is approximated as an elliptic cylinder with trapezoidal wings. The problem is solved by hybrid technique which uses FEM (finite element method) for near-field calculation and UTD (uniform theory of diffraction) for directional pattern and surface currents computation. The imperfect conductance...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.