Sökning: "model parameter extraction"

Visar resultat 1 - 5 av 36 avhandlingar innehållade orden model parameter extraction.

  1. 1. Model Based Coding : Initialization, Parameter Extraction and Evaluation

    Författare :Zhengrong Yao; Haibo Li; Ralf Schäfer; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Model-based coding; Motion estimation; Vision based tracking; Initialization; Analysis-by-Synthesis; Texture mapping; Active tracking.; Signalbehandling; Signal processing; Signalbehandling; Signal Processing; signalbehandling;

    Sammanfattning : This thesis covers topics relevant to model-based coding. Model-based coding is a promising very low bit rate video coding technique. The idea behind this technique is to parameterize a talking head and to extract and transmit the parameters describing facial movements. At the receiver, the parameters are used to reconstruct the talking head. LÄS MER

  3. 2. Microwave Transistor Noise Model Extraction Methods and a Non-Contacting Scattering Parameter Measurement Method

    Författare :Jörgen Stenarson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extraction; S-parameter; noise parameter; vector network analyzer; electro-magnetic probe; microwave; non-contacting testing; transistor noise model; VNA; EM-probe; non-invasive testing;

    Sammanfattning : This thesis has two parts. The first part discuss noise model extraction methods for FETs. The second part describe theory and implementation of a non-contacting S-parameter measurement method. Noise is an important aspect for a circuit designer, because noise generated in the circuit is a sensitivity limiting factor. LÄS MER

  4. 3. Characterisation of bipolar transistors : parameter extraction and degradation dynamics

    Författare :Fredrik Ingvarson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bipolar junction transistor; reverse-bias stress; early effect; Gummel-Poon transistor model; recovery dynamics; parameter extraction; stress dynamics; direct extraction; current gain degradation; series resistance extraction;

    Sammanfattning : .... LÄS MER

  5. 4. DC Parameter Extraction and Modeling of Bipolar Transistors

    Författare :Martin Linder; KTH; []
    Nyckelord :bipolar transistors; papameter extraction; test structure; modeling; distributed model; base resistance; emitter resistance; collector resistance;

    Sammanfattning : .... LÄS MER

  7. 5. Microwave FET Modeling and Applications

    Författare :Christian Fager; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MESFET; uncertainty; model; FMCW; statistical; HEMT; small-signal; extraction; distortion; intermodulation; CMOS; LDMOS; power amplifier; estimation; FET; large-signal; radar; AM noise;

    Sammanfattning : This thesis deals with three distinct topics within the areas of modeling, analysis and circuit design with microwave field effect transistors (FETs). First, the extraction of FET small-signal model parameters is addressed. LÄS MER