Sökning: "Advanced Antenna Systems"

Visar resultat 21 - 25 av 32 avhandlingar innehållade orden Advanced Antenna Systems.

1. 21. DC Generation for Inductively Coupled RFID Systems

   Författare :Hans Rabén; Catherine Dehollain; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

   Sammanfattning : The ability to store information electronically in small tags that can be read wirelesslyhas great potential. Radio frequency identification (RFID) technology is used today in anumber of different areas, such as logistics, supply chain management, access control andenvironmental monitoring. LÄS MER

3. 22. Low-Noise Amplifier Design for Ultra-Wideband Systems

   Författare :Adriana Serban Craciunescu; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : The low-noise amplifier (LNA) remains a critical block in every receiver front-end. As the development of the widcband, low-power and low-cost wireless systems continues, new LNA topologies and design methodologies have become one of the most interesting challenges in the field of radio frequency system design. LÄS MER

4. 23. Antennas and Antenna Measurement Techniques for Mobile Communication Terminals

   Författare :Paul Hallbjörner; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Mobile communication is expanding rapidly, finding new uses and pushing the development of terminals. There are many systems in use today, for example mobile phone systems for voice communication, satellite navigation/positioning systems, and short range data communication. LÄS MER

5. 24. On Parameter Estimation : Applications in Radio Astronomy and Power Networks

   Författare :Jonas Lundbäck; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parameter estimation; Antenna arrays; FMCW-radar; Polarization estimation; Fault locator;

   Sammanfattning : Signal processing is a common part of the modern society used to obtain high functionality in a vast number of applications. As the development of advanced electronics and powerful computers continue, the limit of the functionality in many systems is increased. LÄS MER

7. 25. Design and Characterization of Functional Structures for Electromagnetic Waves

   Författare :Andreas Ericsson; Teoretisk elektroteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electromagnetic scattering; functional structure; circular polarization selective structure; reflector antenna; electromagnetic absorber; radar cross section; compressive sensing; triaxial weave; homogenization; physical optics;

   Sammanfattning : This dissertation deals with design and characterization of functional structures for scattering of electromagnetic waves. An abundance of these structures can be found in nature, such as the structural coloration in the feathers of a peacock, the scales of butterflies and the shell of scarab beetles. LÄS MER