Essays about: "waveguide"

Showing result 21 - 25 of 68 essays containing the word waveguide.

1. 21. Dual Polarized Geodesic Lens

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Freysteinn Vidar Vidarsson; [2020]
   Keywords : ;

   Abstract : Gradient-index (GRIN) lens antennas, such as the Luneburg lens, posses attractive electromagnetic properties. The smooth change in refractive index ensures no internal reflections and the focusing of the electromagnetic waves results in a directive antenna. The main challenge of the design of a GRIN lens is acquiring the required refractive index. READ MORE

3. 22. Dual-polarized feed for mmWave lens antennas

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Juan Luis Albadalejo Lijarcio; [2020]
   Keywords : ;

   Abstract : The fact of being bulky and not very cost-efficient made lens antennas not to be takenmuch into account in the past. Nowadays, this kind of antennas has attracted moreattention due to the increasing demand of higher frequencies in 5G, where lensesbecome considerably smaller. READ MORE

4. 23. Out-of-plane Ferromagnetic Resonance (FMR) measurements on magnetic nanoparticle dispersions for biomedical sensor applications

   University essay from Uppsala universitet/Fasta tillståndets fysik

   Author : Markus Back; [2020]
   Keywords : Ferromagnetic; magnetic; resonance; FMR; EPR; nanoparticle; microwave; coplanar; waveguide; cavity; s-parameter; gilbert; damping; gyromagnetic; liquid; biosensor; landau; lifshits; spin; polymer; composites; engineering physics; teknisk fysik; magnetism; ferromagnetisk; vågledare; resonans; mikrovågsteknik; nanopartiklar;

   Abstract : In this master work, we investigated the feasibility of a magnetic resonance measurement technique using magnetic nanoparticle dispersions in both liquid and solid form. The implementation is realised as a coplanar waveguide operating in the frequency range of 0.5 - 20 GHz and an electromagnet producing a static magnetic field of strength up to 1. READ MORE

5. 24. Achieving Optimal Alignments of IR Source and Detector in Waveguide Based Gas Sensor

   University essay from KTH/Medicinteknik och hälsosystem

   Author : Sefik Güler; Agbai Randolph Agwu; [2020]
   Keywords : Non-dispersive infrared technology; microelectromechanical systems; infrared light; electromagnetic spectrum; gas sensor; light emitting diode; photodiode detector; Icke-dispersiv infraröd teknologi; mikroelektromekaniska system; infrarött ljus; elektromagnetiskt spektrum; gassensor; lysdiod; fotodioddetektor;

   Abstract : I takt med att tekniken för mikroelektromekaniska system utvecklas uppkommer det nya områden för tillämpning. Ett område är inom gassensorer där icke-dispersiv infraröd strålning används genom att mäta absorptionen hos olika gaser för att bestämma mängden av en specifik gas i luften. READ MORE

6. 25. Application of Twist Symmetry to a Cylindrical Dielectric Waveguide

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Kwinten Van Gassen; [2020]
   Keywords : ;

   Abstract : The application of higher order symmetry to waveguide design is an active field and is showing evidence of improvement over traditional waveguide designs. There are two forms of higher symmetry: glide symmetry and twist symmetry. READ MORE