Sökning: "radio frequency RF"

Visar resultat 6 - 10 av 156 avhandlingar innehållade orden radio frequency RF.

  1. 6. On Radio Frequency Behavioral Modeling : Measurement Techniques, Devices and Validation Aspects

    Författare :Per N. Landin; Peter Händel; Magnus Isaksson; Wendy Van Moer; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik;

    Sammanfattning : Effektförstärkare för radiofrekvensapplikationer utgör fortfarande ett av de största problemen i trådlösa kommunikationssystem. Detta beror på att dessa förstärkare är ickelinjära, har låg energieffektivitet och ger mycket distortioner. Bättre verktyg för att förstå och korrigera dessa beteenden är nödvändiga. LÄS MER

  3. 7. Multiband LNA Design and RF-Sampling Front-Ends for Flexible Wireless Receivers

    Författare :Stefan Andersson; Christer Svensson; Marc Tiebout; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RF; Microelectronics; Multiband LNAs; RF-Sampling; Sampling Front-Ends; Flexible Wireless Receivers; Multistandard Receivers.; Electronics; Elektronik;

    Sammanfattning : The wireless market is developing very fast today with a steadily increasing number of users all around the world. An increasing number of users and the constant need for higher and higher data rates have led to an increasing number of emerging wireless communication standards. LÄS MER

  4. 8. Dosimetry of Local Radio Frequency Exposure

    Författare :Rudolf Kopecky; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; subgridding; FDTD; rats; head; SAR; dosimetry; inner ear labyrinth; mobile phone;

    Sammanfattning : Finite-difference time-domain (FDTD) is a popularcomputational electrodynamics modelling technique. It has been widelyused, from radar cross section computations through electromagneticcompatibility investigations to modelling of electromagnetic exposurein biological tissues. LÄS MER

  5. 9. The Radio Frequency Single-Electron Transistor: Noise Properties and its Potential for Detecting Electrons on Helium

    Författare :Serguei Kafanov; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; single electron transistor; Coulomb blockade; SET; radio;

    Sammanfattning : In this thesis the noise in the single electron transistor (SET) has been investigated.The charge sensitivity for the radio frequency single electron transistor(RF-SET) was measured. The demonstrated result is better than the previouslybest reported value both at 40 mK, and at 4.2 K. LÄS MER

  7. 10. III-V Nanowire MOSFET High-Frequency Technology Platform

    Författare :Stefan Andric; Nanoelektronik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MOSFET; III-V; nanowire NW ; Technology library; Process Monitor Structures; Radio Frequency; millimeter wave mmWave ; Compact Modelling; Circuit Design; Matching Networks; Low Noise Amplifier;

    Sammanfattning : This thesis addresses the main challenges in using III-V nanowireMOSFETs for high-frequency applications by building a III-Vvertical nanowire MOSFET technology library. The initial devicelayout is designed, based on the assessment of the current III-V verticalnanowire MOSFET with state-of-the-art performance. LÄS MER