Sökning: "high linearity"

Visar resultat 1 - 5 av 120 avhandlingar innehållade orden high linearity.

  1. 1. High Frequency Characterization and Modeling of SiGe Heterojunction Bipolar Transistors

    Författare :B. Gunnar Malm; KTH; []
    Nyckelord :Silicon-Germanium SiGe ; heterojunction bipolar transistor HBT ; low-frequency noise; high-frequency noise; harmonic distortion; linearity; device simulation; collector profile; epitaxial base integration; radio frequency RF ; radio frequency inte;

    Sammanfattning : .... LÄS MER

  3. 2. GaN HEMT Low Noise Amplifiers for Radio Base Station Receivers

    Författare :Pirooz Chehrenegar; Chalmers University of Technology; []
    Nyckelord :gallium nitride GaN ; radio base station receiver; cascode; high linearity; robustness.; cascade; high electron mobility transistor HEMT ; low noise; low noise amplifier;

    Sammanfattning : Gallium nitride (GaN) high electron mobility transistor (HEMT) has been introduced as the technology of choice for high power microwave applications due to its material properties including high saturation electron velocity and breakdown field together with excellent thermal conductivity and robustness.It is also a promising candidate for receiver front-ends in the radio base station(RBS) where low noise figure and high linearity are key issues for low noiseamplifier (LNA) design. LÄS MER

  4. 3. Design of High Linearity MMIC Power Amplifiers for Space Applications

    Författare :Oliver Silva Barrera; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pHEMT; GaAs; reliability; Power amplifier; non-linear modeling; Junction temperature; C-Band; Infrared measurements;

    Sammanfattning : The high linearity performance in satellite transmitters is receiving increasing attention due to the demands of higher data rates in satellite communication links. During the last decade, digital communication links in satellite system have been replacing the previous analog links increasing the channel efficiency by allocating multiple carriers in the transponder bandwidth. LÄS MER

  5. 4. Digital Predistortion Linearization of High Efficiency Transmitters

    Författare :Haiying Cao; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : High efficiency and good linearity are two important characteristics of transmitters in future wireless communication systems. However, there is usually a trade-off: when high efficiency is achieved, linearity is degraded and nonlinear distortion occurs. LÄS MER

  7. 5. Development of SiC MESFET Based MMIC Technology

    Författare :Mattias Sudow; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MIM capacitor; high power amplifier; limiter; SiC MMIC; SiC MESFET; SiC Schottky; TFR; high level mixer; spiral inductor; via-hole;

    Sammanfattning : A SiC MESFET based MMIC process has been successfully developed. This technology has its main potential in high power microwave circuits. It will offer the benefits of the high integration seen in GaAs MMIC at the same time as it will offer the benefits of the high voltage operation seen in Si LDMOS and Si BJTs. LÄS MER