Sökning: "active antennas"
Visar resultat 6 - 10 av 41 avhandlingar innehållade orden active antennas.
6. Active Transmitter Antenna Array Modeling for MIMO Applications
Sammanfattning : The rapid growth of data traffic in mobile communications has attracted interests to the Multiple-Input-Multiple-Output (MIMO) communication systems at millimeter-wave (mmWave) frequencies. MIMO systems exploit active transmitter antenna arrays for higher energy efficiency and providing beamforming flexibility. LÄS MER
7. Integration of Planar Antennas with MMIC Active Frontends for THz Imaging Applications
Sammanfattning : In recent years, there has been constant growth in using THz frequencies or mm, sub- mm wavelengths for various applications such as: Astronomy, Atmospheric studies, security, bio-medical imaging. All these applications are now seen more feasible due to rapid enhancements of semi-conductor processing technologies. LÄS MER
8. Millimeter-Wave Active Array Antennas Integrating Power Amplifier MMICs through Contactless Interconnects
Sammanfattning : Next-generation mobile wireless technologies demand higher data capacity than the modern sub-6 GHz technologies can provide. With abundantly available bandwidth, millimeter waves (e.g., Ka/K bands) can offer data rates of around 10 Gbit/s; however, this shift to higher frequency bands also leads to at least 20 dB more free-space path loss. LÄS MER
9. Micromachined antennas for integration with silicon based active devices
Sammanfattning : .... LÄS MER
10. Gap Waveguide Technology for Millimeter Wave Applications and Integration with Antennas
Sammanfattning : The increasing advance of short range wireless communications requiring high data rates and the lack of available spectrum have driven researchers and industry to move towards higher frequencies, in particular to the millimeter wave range. The opening of this wide portion of free spectrum has risen a large interest in developing mm-wave communication systems for commercial applications. LÄS MER