Search for dissertations about: "negative resistance oscillator"

Found 4 swedish dissertations containing the words negative resistance oscillator.

  2. 1. Oscillator design in III-V technologies

    Author : Szhau Lai; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MMIC; InGaP HBT; device model; mixer; Darlington pair; GaN HEMT; simulation; varactor; phase noise; CAD; switch mode.; VCO; Colpitts oscillator; low frequency noise;

    Abstract : The thesis treats the design of low phase noise oscillators/VCOs in GaAs/InGaP HBT and GaN HEMT technologies. The covered topics are: active device modeling, noise characterization, passive structures, phase noise models, simulation/measurement tools, circuit topologies, and design techniques. READ MORE

  4. 2. High-Temperature Radio Circuits in Silicon Carbide Bipolar Technology

    Author : Muhammad Waqar Hussain; Ana Rusu; Florin Udrea; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 4H-SiC; active down-conversion mixer; BJT; EM simulations; silicon carbide; high-temperature; IF amplifier; LTCC; negative resistance oscillator; passives; RF circuits; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : High-temperature electronics find many niche applications in downhole drilling, aviation, automotive and future exploration of inner planets like Venus and Mercury. Past studies have shown the potential of silicon carbide (SiC) electronics for catering these extreme temperature applications. READ MORE

  5. 3. Electron Tunneling and Field-Effect Devices in mm-Wave Circuits

    Author : Mikael Egard; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; negative differential conductance oscillator; resonant tunneling diode; ultra-wideband; impulse radio; Wavelet generator; MOSFET; nanowire; high frequency characterization; Fysicumarkivet A:2012:Egard;

    Abstract : Short high-frequency electromagnetic pulses, also referred to as wavelets, are considered for use in various short-range impulse based ultra-wideband applications, such as communication, imaging, radar, spectroscopy, and localization. This thesis investigates field-effect and tunneling based semiconductor devices and their operation in millimeter-wave (mm-wave) impulse transceivers. READ MORE

  6. 4. Flexible Receivers in CMOS for Wireless Communication

    Author : Anders Nejdel; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Consumers are pushing for higher data rates to support more services that are introduced in mobile applications. As an example, a few years ago video-on-demand was only accessed through landlines, but today wireless devices are frequently used to stream video. READ MORE