Sökning: "ultra-wideband radar"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden ultra-wideband radar.
1. Design and Fabrication of Ultra-Wideband Bandpass Filter Based on Liquid Crystal Polymer Substrates
Sammanfattning : For millimeter (mm)-wave systems’ applications, as frequency is moving towards higher and higher bands, materials and integration technologies are witnessing higher performance demands and consequently higher constraints. From a material’s point of view, the selection of substrate material has recently drawn considerable attention in the design of the whole mm-wave system. LÄS MER
2. Detection and classification of buried objects using impulse radar measurements
Sammanfattning : .... LÄS MER
3. Factorized Geometrical Autofocus for Synthetic Aperture Radar Processing
Sammanfattning : .... LÄS MER
4. Electron Tunneling and Field-Effect Devices in mm-Wave Circuits
Sammanfattning : 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. LÄS MER
5. EM Design for New Ultra Wide Band Technologies: Eleven Feed Baluns, Bowtie Antennas and Gap Waveguides
Sammanfattning : UWB (ultra wideband), depending on the application requirement, is usually referred to more than 500 MHz bandwidth for radio/wireless applications. Here in this thesis it is also used to denote extremely wideband antennas and components of several octaves bandwidth, particularly for high frequency applications. LÄS MER