Search for dissertations about: "varactor"

Showing result 21 - 25 of 37 swedish dissertations containing the word varactor.

  2. 21. Reactors - Circuit Theory and Silicon Integrated Applications

    Author : Pietro Andreani; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active Filters; Delay Lines; VCOs; Inductors; Circuit Theory; Capacitors; CMOS; Electronics; Elektronik;

    Abstract : This dissertation deals with reactive components in electric circuits, both as targets for a theoretical circuit analysis, and as devices implemented in silicon processes like CMOS. The frequency behavior of a general electric network is determined by the reactances (i.e. READ MORE

  4. 22. Millimetre wave waveguide enclosed grid frequency multipliers and imaging

    Author : Robin Dahlbäck; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Millimeter wave; THz imaging; THz sources; Grid; Heterostructure Barrier Var- actors HBVs ; Varactors; Array; FMCW; 2D-grid; Quasi-optical.; Frequency multipliers; Radars; sub-millimetre waves; Schottky diodes;

    Abstract : The utilisation of the THz spectrum ( 0.3-10 THz ) is hampered by fundamental difficulties in generating power at these frequencies. READ MORE

  5. 23. Silicon Integrated HBV Frequency Multipliers for THz Applications

    Author : Aleksandra Malko; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frequency multipliers; Heterostrucutre Barrier Varactors HBVs ; THz sources; wafer bonding.; integrated circuits; heterogeneous integration; Compund semiconductors; epitaxial transfer; MICs;

    Abstract : This thesis deals with integrated varactor diode circuits for terahertz (THz) applications. In particular hybrid, monolithic microwave integrated circuits (MMICs), and heterogeneous integration are explored for frequency multiplier applications. READ MORE

  6. 24. Piezoelectric and ferroelectric device technologies for microwave oscillators

    Author : Martin Norling; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; piezoelectrics; electrostrictive materials; microwave oscillators; thin film devices; ferroelectrics; thin film bulk acoustic resonators; ferroelectric varactors;

    Abstract : The purpose of this thesis is to investigate piezoelectric and ferroelectric thin film device technologies for application in microwave oscillators.Thin film varactors based on ferroelectric materials are considered. READ MORE

  7. 25. SiC Varactors for Dynamic Load Modulation of Microwave Power Amplifiers

    Author : Christer Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear characterization; varactors; active load-pull; power; microwave; amplifier; dynamic load modulation; SiC; energy efficiency;

    Abstract : The rapid consumer adoption of mobile services is leading to an exponential growth in wireless data traffic. In order to accommodate more concurrent high data-rate users, the required complexity of transmitting radio base station (RBS) power amplifiers (PAs) is increasing. READ MORE