Sökning: "Antenna design"

Visar resultat 11 - 15 av 223 uppsatser innehållade orden Antenna design.

  1. 11. Investigation of Analog Calibration Systems for Spurious Tone Suppression in Frequency Triplers

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

    Författare :Cristian Alexandru Ghihanis; Barath Copparam Santhanakrishnan Sudarsan; [2023]
    Nyckelord :Delay-Locked Loop; DLL; Edge-Combining; EC; EC DLL; Edge-Combining Delay-Locked Loop; spurious tone calibration; spurs calibration; spurious tones compensation; spurs compensation; Technology and Engineering;

    Sammanfattning : The market for Wi-Fi receiver designs for latest Wi-Fi standards, that cover RF bands in the 2.4 GHz, 5 GHz and 6 GHz spectrum, require increasingly stringent power consumption limitations as more of the market is driven towards battery-powered devices. LÄS MER

  3. 12. Antenna measurements of HF antennas using low cost UAVs

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

    Författare :Ruimin Ma; Jinting Zhang; [2023]
    Nyckelord :Antenna; HF; UAV; Radiation Pattern; Antenna; HF; UAV; Strålningsmönster;

    Sammanfattning : High-frequency signal far-field measurement systems usually involve the use of complex and expensive equipment, since the measurements must be made at a distance of multiple wavelengths from the antenna. Helicopter surveyors are commonly utilized. LÄS MER

  4. 13. Mobile Traffic Classification and Multi-Cell Base Station Control for Energy-Efficient 5G Networks

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

    Författare :Cai Tianzhang; [2023]
    Nyckelord :;

    Sammanfattning : The global energy consumption of mobile networks is rapidly increasing due to the exponential growth of mobile network traffic. The advent of next-generation cellular technologies such as fifth-generation (5G) and beyond promises higher network throughput and lower latency but also demands higher power consumption for its denser base station (BS) deployment and more energy-intensive processors. LÄS MER

  5. 14. Multiplexing NFC Antennas : An evaluation of the technique and its limitations

    Kandidat-uppsats, Jönköping University/JTH, Avdelningen för datavetenskap

    Författare :Viktor Gustafsson; Per Ottosson; [2023]
    Nyckelord :AAT; BER; DSR; Impedance; Multiplexer; NFC; Wireless Technology;

    Sammanfattning : Introduction This study aims to investigate the possibility of driving multiple NFC antennas with a single NFC-controller by using a multiplexer. An artifact was developed and experiments were conducted in order to evaluate the design choice and in addition, to observe the impact of a multiplexer in an NFC system with respect to the number of successful tag detections, bit error rate (BER), the utilization of automatic antenna tuning (AAT) and the physical distance to the NFC tag. LÄS MER

  7. 15. Elektromagnetisk modellering av Grimeton Radiostations VLF-antenn

    M1-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Lukas Lindqvist; Shaven Guli; [2023]
    Nyckelord :;

    Sammanfattning : Vid konstruktion av antenner idag används datorbaserade verktyg för att görasimuleringar i utvecklingsskedet för att se till att antennen uppnår eftersträvadprestanda. Denna teknik var inte möjlig att använda under de första årtiondenaav 1900-talet då multipelantennen utvecklades, vilket är antenntypen somanvänds vid Radiostationen i Grimeton. LÄS MER