Sökning: "reflector feed"
Visar resultat 1 - 5 av 17 avhandlingar innehållade orden reflector feed.
1. Modern numerical methods in electromagnetics applied to the design of reflector antennas and horn feeds
Sammanfattning : .... LÄS MER
2. Design of hat fed reflector antennas using FDTD
Sammanfattning : .... LÄS MER
3. Dual Band Prime Focus Feed for Satellite Earth Terminals
Sammanfattning : Satellite Communication systems have been studied and developed since long. With more high frequency satellite bands coming in the market, there is a need to develop suchsystems with multi-band or wideband operation with reconfigurable antennas which can provide simultaneous transmit receive capabilities on different polarizations as well as have properties suitable to track the satellite. LÄS MER
4. Ultra-wideband feed design and characterization for next generation radio telescopes
Sammanfattning : Radio telescopes are used as tools for observations in both radio astronomy and geodesy. To observe the weak sources in space, highly sensitive receivers headed by optimized reflector feeds are needed. Wideband and ultra-wideband (UWB) receiver systems enable large continuous frequency bandwidth and reduce the number of receivers that are needed. LÄS MER
5. Digital Beamforming Focal Plane Arrays for Radio Astronomy and Space-Borne Passive Remote Sensing
Sammanfattning : Dense Phased Array Feeds (PAFs) for reflector antennas have numerous advantages over traditional cluster feeds of horns in a one-horn-per-beam configuration, especially in RF-imaging applications which require multiple simultaneously formed and closely overlapping beams. However, the accurate analysis and design of such PAF systems represents a challenging problem, both from an EM-modeling and beamforming optimization point of view. LÄS MER