Sökning: "Kaiser-Bessel window"

Hittade 2 uppsatser innehållade orden Kaiser-Bessel window.

1. 1. Antenna elements matching : time-domain analysis

   Master-uppsats, Akademin för teknik och miljö; Avdelningen för elektronik, matematik och naturvetenskap

   Författare :Cristina Condori-Arapa; [2010]
   Nyckelord :Time-domain analysis; Chirp z-transform; Kaiser-Bessel window; Filtering in time domain; Effects of time-domain analysis; Reverse engineering; De-embedding; TRL algorithm; uncertainties; sensitivity;

   Sammanfattning : Time domain analysis in vector network analyzers (VNAs) is a method to represent the frequency response, stated by the S-parameters, in time domain with apparent high resolution. Among other utilities time domain option from Agilent allows to measure microwave devices into a specific frequency range and down till DC as well with the two time domain mode: band-pass and low-pass mode. LÄS MER

3. 2. Method for Acquisition and Reconstruction of non-Cartesian 3-D fMRI

   Magister-uppsats, Bildbehandling; Tekniska högskolan

   Författare :Per Thyr; [2008]
   Nyckelord :MRI; PRESTO; PRESTO CAN; rotation; sequence development; image reconstruction; gridding; phase correction;

   Sammanfattning : The PRESTO sequence is a well-known 3-D fMRI imaging sequence. In this sequence the echo planar imaging technique is merged with the echo-shift technique. This combination results in a very fast image acquisition, which is required for fMRI examinations of neural activation in the human brain. LÄS MER