Sökning: "flat array antenna"
Visar resultat 1 - 5 av 7 uppsatser innehållade orden flat array antenna.
1. Beam Steering Antenna Based on Continuous Transverse Stub Array and Flat Risley Prism Metasurface Lens
Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Satellite communication is an integral part of society in this day and era. Due tobandwidth limitations communication frequencies have moved into higher frequencybandwidths. With the advancements in communication comes the demand for more efficientantennas due to the high attenuation of millimeter wavelength frequencies. LÄS MER
2. Near Field millimeter Wave Antenna Measurements
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : In the real world, understanding an antenna's radiation pattern is crucial for its proper utilization. Typically, antennas are tested in the far-field region, where the radiation lobes are fully developed and phase errors are less than pi/8. LÄS MER
3. Incoherent Scattering of Twisted Radar Beams from the Ionosphere
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutet för rymdfysik, UppsalaavdelningenSammanfattning : In the search for natural orbital angular momentum (OAM) effects, some of the first incoherent scatter experiments with twisted radar beams during aurora were conducted at Poker Flat Incoherent Scatter Radar (PFISR), Alaska, USA, in October 2012. Experimental data of scatter from beam configurations with opposite twists were investigated. LÄS MER
4. Stabiliserad antennplattform för mobil satellitkommunikation
Master-uppsats, KTH/Maskinkonstruktion (Inst.)Sammanfattning : This report describes a master thesis project work in machine design. The work has been done at the consulting firm Svea Teknik with DataPath as the customer. The subject of the project was to design a concept for a stabilized platform for a satellite antenna in an on-the-move application. LÄS MER
5. Low-PAR Precoding for Very-Large Multi-User MIMO Systems
Master-uppsats, Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska högskolanSammanfattning : Storskaliga fleranvändar-MIMO-system, med hundratals basstationsantenner, studeras med allt större intresse både inom akademin och industrin. En anledning är att sådana system kan betjäna flera enantennsanvändare samtidigt över samma tids-frekvens-resurs med fleranvändarförkodning. LÄS MER