Sökning: "Phased Array Radio"

Hittade 5 uppsatser innehållade orden Phased Array Radio.

1. 1. RayTracing Analysis and Simulator Design of Unmanned Aerial Vehicle Communication and Detection System in Urban Environment

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Jie Huang; [2022]
   Nyckelord :Drone detection; phased array; angle of arrival; MUltiple SIgnal Classification; raytracing; reflection; diffraction; Drönardetektering; fasad array; ankomstvinkel; MUltiple SIgnal Classification; raytracing; reflektion; diffraktion;

   Sammanfattning : In recent years, unmanned aerial vehicles (UAV), also called drones, have experienced a rapid increase, which leads to the concern of illegal use of them. Passive RF is one of the effective ways to detect drones by receiving drones’ communication signals. LÄS MER

3. 2. Lean Beam Management for New Radio

   Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

   Författare :Nawanit Kumar; [2020]
   Nyckelord :5G; NR; MIMO; Beam management; CSI-RS; Technology and Engineering;

   Sammanfattning : The use of millimetre-wave frequencies in Fifth generation New Radio has lead to high path loss due to radio propagation environment. Simultaneously, high data rates is a must for current products due to high market demand. This requirement accounts for efficient tracking of the best beam for the user equipment to stay connected to it. LÄS MER

4. 3. A Quadrature Frequency Generation Chain for Direct-conversion Phased-array 5G Transceivers

   Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

   Författare :Hamid Yadegar Amin; [2020]
   Nyckelord :5G Phased array mm-wave FR2; Technology and Engineering;

   Sammanfattning : The 5th generation (5G) has recently specified a new spectrum range, FR2- 5G New Radio (5G-NR), to provide higher spectral efficiency and channel capacity for ubiquitous cellular connectivity where the user ends can be in various types such as picocell stations, sensor nodes, cloud servers, hand-held devices, and so on. Due to the advantage of phased array antennas in performing beam-forming, and improving SNR at higher spectra, multi-antenna systems have gained an inevitable role in developing such radios. LÄS MER

5. 4. Unmanned Aerial Vehicle Positioning Using a Phased Array Radio and GNSS Independent Sensors

   Master-uppsats, Linköpings universitet/Reglerteknik

   Författare :Carl Rapp; [2019]
   Nyckelord :Sensorfusion; Kalman filter; Phased Array Radio; UAV; Positioning;

   Sammanfattning : This thesis studies the possibility to replace the global navigation satellite system (GNSS) with a phased array radio system (PARS) for positioning and navigation of an unmanned aerial vehicle (UAV). With the increase of UAVs in both civilian and military applications, the need for a robust and accurate navigation solution has increased. LÄS MER

7. 5. Interference and Energy Conservation in Phased Antenna Arrays and Young’s Double Slit  Experiment

   Master-uppsats, Institutet för rymdfysik, Uppsalaavdelningen; Institutionen för fysik och astronomi

   Författare :Andreas Lundin; [2012]
   Nyckelord :Interference; energy conservation; double slit; antenna; antennas; array; phased; electromagnetic coupling;

   Sammanfattning : The interest in creating and detecting electromagnetic waves carryingangular momentum in such a way that they form helical wavefronts,so called "twisted light'', has increased in recent decades.One possible way of generating such waves at radio frequenciesis to use a circular phased antenna array, where a larger relativephasing of the antenna elements corresponds to more twist of thewavefront per wavelength. LÄS MER