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.
High data rate satellite communications in Ka-band are an important and ongoing area of research and development. Especially compact antennas with high gain are of interest for bidirectional land mobile scenarios. In this paper, we describe a volume-efficient Cassegrain reflector antenna fed from a novel PCB-based multimode monopulse feed chain. The structure provides a dual circular polarisation...
A 2D-periodic leaky-wave antenna for a Ka-band satcom-on-the-move ground user terminal is presented. The antenna panel operates at the 20 GHz downlink as well as the 30 GHz uplink bands with the respective circular polarizations, using a common radiation aperture and a common phase centre. The dual-band performance is achieved by a carefully designed stacked dual-layer frequency selective surface,...
The growing need for bidirectional mobile satellite communications in the Ka-band necessitates the development of dedicated antenna systems. In this article, we describe two different solutions for mobile user-terminal antennas intended for an operation in emergency scenarios. The first solution, a high-gain antenna, consists of a Cassegrain reflector, fed from a multimode monopulse tracking system...
This publication presents a leaky-wave antenna panel comprised of a dual-layer partially reflective surface intended for transmit and receive operations in Ka-band. Several of these panels are installed on the outdoor-unit of a low-profile user-terminal intended for satellite communication on the move during emergency scenarios. Given the widely separated up- and downlink-frequencies in Ka-band, the...
The increasing interest in bi-directional mobile high data rate satellite communications in Ka-band necessitates the development of dedicated antenna tracking systems and feeds. In this paper we describe a compact feed structure based on printed circuit boards for a mobile satellite communications ground terminal with a Cassegrain reflector antenna. The novel structure provides a dual circular polarisation...
The German geo-stationary Heinrich Hertz satellite mission signalises the growing interest in advanced nomadic and mobile satellite communications at Ka-band frequencies. In the framework of an industrial-academic consortium supported by the German space agency, the project MoSaKa adresses the ground segment required for such missions, in terms of bi-directional reliable non-stationary communication...
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.