Sökning: "radio-frequency filters"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden radio-frequency filters.

1. 1. 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. 2. Digitalisera tryckmätning över filter hos AstraZeneca

   M1-uppsats, KTH/Produktionsutveckling

   Författare :Heshmat Hosseiny; Emil Köpsén; [2023]
   Nyckelord :Differential pressure sensor; Maintenance; Predictive maintenance; Ethernet Gateway; Filter; ISO 16890; F7 Filter; Wired sensor; Wireless sensor; IIoT; Big Data; Industry 4.0; Differentialtryckgivare; Underhåll; Prediktivt underhåll; Ethernet Gateway; Filter; ISO 16890; F7 filter; Trådbunden givare; Trådlösa givare; IIoT; Big data; Industri 4.0;

   Sammanfattning : AstraZeneca är ett medicinskt företag lokaliserat i Södertälje som har cirka 900 luftfilterboxar hos sin anläggning i Gärtuna. Dessa filterboxar kan vara opraktiska att hålla koll på eftersom de är utspridda uppe på vindarna, samt att det behövs bra framförhållning vid filterbyten eftersom vissa filter innehåller farliga ämnen. LÄS MER

4. 3. Screw Joint Analysis in Radio Frequency Filters

   Master-uppsats, KTH/Industriell produktion

   Författare :Nils Löwhagen; [2022]
   Nyckelord :Digital filter; Pre-load force; Clamp torque; Release torque; Surface roughness; Thermal shock test; Digitalt filter; Förspänningskraft; Klämvridmoment; Lossdragningsmoment; Ytjämnhet; Termiskt chocktest;

   Sammanfattning : Filter devices are central elements of radio units utilized for modern-day telecommunication. Leakages of radio waves and passive intermodulation are evolving more prominent as the frequency bands become crowded. LÄS MER

5. 4. Study of HfN as seed layer for next generation of BAW RF filters : synthesis, characterization, and investigation of piezoelectric performance

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Eduard Llorens Balada; [2020]
   Nyckelord :HfN; AlScN; AlN; sputtering; XRD; SEM; seed layer; epitaxial growth;

   Sammanfattning : Micro-electro-mechanical systems (MEMS) have become an essential component of a wide range ofelectronic devices over the last decades such as accelerometers, microphones, gas sensors, and filters.During this new millennium, a new radio frequency (RF) technology has been developed to satisfy thetough demands that arose due to the implementation of 5G wireless communication: bulk acoustic wave(BAW) filters. LÄS MER

7. 5. Additive manufacturing and radio frequency filters : A case study on 3D-printing processes, postprocessing and silver coating methods

   Master-uppsats, KTH/Industriell produktion

   Författare :Ana García-Verdugo Zuil; Amanda Herrero Martín; [2020]
   Nyckelord :Additive manufacturing; radio-frequency filters; post-processing; silver coating; surface roughness; Multi Jet Fusion MJF ; Selective Laser Melting SLM ; Tillsatsstillverkning; radiofrekvensfilter; efterbehandling; silverbeläggning; ytojämnhet; Multi Jet Fusion MJF ; Selective Laser Melting SLM ;

   Sammanfattning : Additive manufacturing (AM) is an attractive way to shorten development time, reduce product weight and allow the manufacturing of more complex products than by conventional manufacturing processes. The problem arises when the previous traditional manufacturing requirements need to be fulfilled by AM as well as the volume production capability. LÄS MER