Sökning: "high-frequency"

Visar resultat 31 - 35 av 741 avhandlingar innehållade ordet high-frequency.

  1. 31. High Frequency Analysis of Silicon RF MOS Transistors

    Författare :Johan Ankarcrona; Jörgen Olsson; Kjell Jeppson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; RF-power; LDMOS; Microwave transistor; SOI; Silicon; MOSFET; Elektronik; Electronics; Elektronik;

    Sammanfattning : Today, the silicon technology is well established for RF-applications (f~1-100 GHz), with emphasis on the lower frequencies (f < 5 GHz). The field of RF power devices is extensive concerning materials and devices. One of the important RF-devices is the silicon LDMOS transistor. LÄS MER

  3. 32. Multilayered Coreless Printed Circuit Board (PCB) Step-down Transformers for High Frequency Switch Mode Power Supplies (SMPS)

    Författare :Radhika Ambatipudi; Kent Bertilsson; Bengt Oelmann; Torbjörn Thiringer; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multilayered Coreless PCB transformers; High frequency converters; Electrical engineering; Elektroteknik; Electronics; Elektronik;

    Sammanfattning : The Power Supply Unit (PSU) plays a vital role in almost all electronic equipment. The continuous efforts applied to the improvement of semiconductor devices such as MOSFETS, diodes, controllers and MOSFET drivers have led to the increased switching speeds of power supplies. LÄS MER

  4. 33. High frequency jet ventilation (HFJV) in clinical practice

    Författare :Karolina Galmén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Surgery often requires general anaesthesia. During general anaesthesia, a ventilator is often used to secure the breathing of the patient. This is preferably done by mimicking normal ventilation. LÄS MER

  5. 34. 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

  7. 35. High frequency monoloithic integrated circuits for communication systems

    Författare :Mehran Mokhtari; KTH; []
    Nyckelord :;

    Sammanfattning : The wavelengths of interest in today's communication systemfront-ends are in the same order of magnitude as the availabledevices and circuit sizes. So the wave nature of theinformation can not be neglected. LÄS MER