Sökning: "Micro wave"

Visar resultat 1 - 5 av 63 avhandlingar innehållade orden Micro wave.

  1. 1. Low phase noise voltage controlled micro- and millimeter wave oscillators

    Författare :Stefan Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radio; anti series; microstrip resonator; silicon bipolar transistor; amplitude limiter; cavity resonator; varactor; transposed gain; MESFET; automatic gain control; VCO; delay line; laser; RF; oscillation criteria; millimetre wave; oscillator; mm-wave; noise; multiplier; fibre optic; SAW; DRO; PLL; surface acoustic wave; Si BJT; 1 f noise; FM noise; HEMT; clipping diode; HBT; YIG sphere; device; terfenol; gunn diode; stabilised; YIG film; quarts crystal; phase locked loop; magnetostrictive; resonator; phase error; whispering gallery mode; sapphire resonator; Fabry-Perot resonator; PHEMT; microwave; HFET; phase noise; DR; dielectric resonator; PM noise; balanced oscillator; piezo electric; AGC; frequency discriminator;

    Sammanfattning : .... LÄS MER

  3. 2. Micro- and Millimeter Wave CMOS Beamforming Receivers

    Författare :Andreas Axholt; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; beamforming; CMOS; front-end; microwave; millimeter wave; phase-locked loop; phased-array;

    Sammanfattning : The available bandwidth in wireless communication systems, such as the 802.11 family, is very limited. Together with the ever increasing data traffic, this causes problems. New possibilities are, however, available thanks to wide license-free bandwidth allocated at higher frequencies. LÄS MER

  4. 3. Properties of wave-front sets and non-tangential convergence

    Författare :Karoline Johansson; Joachim Toft; Luigi Rodino; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fourier Banach spaces; Generalized free time-dependent Schrödinger equation; Micro-local; Modulation spaces; Non-tangential convergence; Pseudo-differential operators; Regularity; Wave-front sets.; Mathematical analysis; Analys; Matematik; Mathematics;

    Sammanfattning : In this thesis we consider regularity properties for solutions to partial differential equations and pseudo-differential equations. The thesis mainly concerns wave-front sets and micro-local properties. LÄS MER

  5. 4. Monolithic Micro- and Millimeter-wave Integrated Circuits in 90 nm CMOS Technology

    Författare :Bahar M. Motlagh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power divider; CMOS integrated circuits; 90 nm CMOS technology; 60 GHz; microstrip line; Si-MMIC; capacitor; balun; millimeter wave; resistive mixer;

    Sammanfattning : The objective of this work has been to design and characterize microwave components and circuits within a 90 nm RF-CMOS process.The work has been divided into two parts: integration of passive components and design and characterization of several mixer circuits. LÄS MER

  7. 5. On the Application of Surface Wave Surveys for Seismic Site Response Evaluation

    Författare :Edwin Obando; Teknisk geologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Surface wave; MASW; seismic site response; ground motion; seismic transfer functions; shear wave velocity; site amplification; walk-away; near-field effect; dispersion curve.;

    Sammanfattning : In sites where earthquakes occur, the use of surface wave methods represents a convenient and effective procedure for soil characterization. In particular, Multichannel Analysis of Surface Wave (MASW) has become a popular tool in many seismic micro-zoning projects. LÄS MER