Essays about: "Radio-waves"

Showing result 16 - 20 of 51 essays containing the word Radio-waves.

  1. 16. The retention of black holes in globular clusters

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Wuxueman Liu; [2021]
    Keywords : Physics and Astronomy;

    Abstract : We simulate the velocities of formed Black Holes to determine the fraction of retained Black Holes in 152 Globular Clusters. The model we used for the escape velocity is from Plummer. The scenarios of the natal kick are Neutronstar like kicks and momentum conserving kicks. READ MORE

  3. 17. Optimisation of flat dielectric lenses using an interior point method

    University essay from Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Jonatan Ek; [2021]
    Keywords : Lens; Permittivity; Optimisation; Interior Point Method; Wave Propagation;

    Abstract : This thesis aims to study how flat dielectric lenses can be designed. The usage of flat lenses is steadily increasing as they are smaller and less bulky than traditional convex lenses. Instead of a lens with a curved surface the permittivity in the lens is varied to achieve the same effect. READ MORE

  4. 18. Moisture calibration of an R.F based inline moisture sensor : An inline moisture sensor based on radio wave attenuation, Microtec M3 Scan, was calibrated to maximise correlation between real water content in wood and received signal

    University essay from Luleå tekniska universitet/Träteknik

    Author : Antonios Antoniadis; [2020]
    Keywords : Moisture; Sensor; Radio-waves; Inline; Non-contact; Calibration; Accuracy;

    Abstract : Sensors based on radio waves are used for inline moisture determination in the sawn wood industry. Placed at the final sorting line such a device can be invaluable, giving the operators real time information on the moisture content of the boards passing through. READ MORE

  5. 19. Design of a screwless radio enclosure.

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Oskar Lundkvist; [2019]
    Keywords : Enclosure; radio; screwless; snap-fit; Inkapsling; radio; skruvlös; snäppen;

    Abstract : Radior är en viktig del av mobiltelefoninätverket. De är kopplade till antenner som trådlöst skickar och tar emot radiovågor. Kraven på inkapslingen av telekommunikationsutrustning ökar kontinuerligt. Ett sätt att minska vikt, storlek, monteringstid och förbättra utseendet av radior kan vara att ersätta skruvar med andra fästprinciper. READ MORE

  6. 20. User Equipment Characterization using Machine Learning

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Vanessa Fakhoury; Xin Zhou; [2019]
    Keywords : machine learning; characterization; massive MIMO; beamforming; neural networks; support vector machine; logistic regression; multiclass neural networks; Technology and Engineering;

    Abstract : With the ever increasing demand for higher data rates and reliability, efficient management of cellular networks remains a challenge. Among other technologies, fifth generation systems are expected to tackle this challenge using large electronically controllable antenna arrays operating in the time division duplex mode. READ MORE