Search for dissertations about: "Active microwave measurements"

Showing result 1 - 5 of 25 swedish dissertations containing the words Active microwave measurements.

  2. 1. Nonlinear Microwave Measurement Architectures for Wideband Device Characterization

    Author : Sebastian Gustafsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonlinear characterization; wideband; GaN HEMT; oscilloscope; microwave; active load-pull;

    Abstract : The global surge for ubiquitous mobile communication requiring high speed and high capacity cellular networks has resulted in a golden age for the development of wireless technology. Modern cellular standards employ complex modulation formats with wider signal bandwidths to cope with the growing demand. READ MORE

  4. 2. Microwave and millimeter-wave FETs and noise parameter measurements

    Author : Hans-Olof Vickes; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Programmable load; Phase shifter; Active filters; Semiconductor devices and materials; Field-effect Transistors; Noise parameters; Equivalent circuits; Dual-gate MESFET; Circuit partitioning; Microwave devices and components;

    Abstract : .... READ MORE

  5. 3. Microwave and millimeter wave CMOS Characterization, modeling, and design

    Author : Mattias Ferndahl; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; load-pull; microwave; large-signal; silicon; characterization; modeling; balun; LSNA; frequency doubler; millimeter wave; power amplifier; CMOS;

    Abstract : The use of CMOS technologies for microwave and millimeter wave applications has recently been made possible as a result of increased transistor performance. The fT and fmax have, for example, passed 100 GHz at the 130 nm node and 200 GHz at the 65 nm node. READ MORE

  6. 4. A Database of Microwave Single Scattering Properties of Ice Hydrometeors

    Author : Robin Nils Ekelund; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; radar; ice hydrometeors; microwave; scattering properties; sub-millimetre; remote sensing;

    Abstract : Microwave remote sensing by satellites is important for global observations of ice hydrometeors. Interpretation of the measurements requires sufficiently accurate knowledge of hydrometeors’ interaction with photons, i.e.  article scattering and absorption. READ MORE

  7. 5. Analytical Approaches to Load Modulation Power Amplifier Design

    Author : William Hallberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; linear; load modulated balanced amplifier LMBA ; Active load-pull; radio frequency RF ; Wilkinson power divider.; load modulation; energy efficiency; microwave; power amplifier PA ; Doherty;

    Abstract : In future mobile communication networks, there will be a shift toward higher carrier frequencies and highly integrated multiple antenna systems. The system performance will largely depend on the available radio frequency (RF) hardware. As such, RF power amplifiers (PAs) with improved performance, e.g. READ MORE