Sökning: "Receivers"
Visar resultat 16 - 20 av 302 avhandlingar innehållade ordet Receivers.
16. Improved components for 2SB THz receivers with enhanced sideband rejection performance
Sammanfattning : The thesis presents work done in improving the sideband rejection ratio for 2SB cryogenic radio astronomy receivers in general, but more specifically, for the future Onsala 20 m 3-mm receiver system and the ALMA Band 5. In order to attain better than 15 dB sideband rejection ratio over the entire bandwidth (approximately 26% RF fractional bandwidth and one octave the IF bandwidth), it is necessary to improve both RF and IF hybrid assembly to optimum performance, i. LÄS MER
17. Reconfigurable Impedance Matching Networks for Radio Receivers
Sammanfattning : Mobile phones become smaller but include more advanced functions for every new generation. This paradox is possible since reduced transistor size and increased integration of digital building blocks free space for new functions. LÄS MER
18. Micro- and Millimeter Wave CMOS Beamforming Receivers
Sammanfattning : The available bandwidth in wireless communication systems, such as the 802.11 family, is very limited. Together with the ever increasing data traffic, this causes problems. New possibilities are, however, available thanks to wide license-free bandwidth allocated at higher frequencies. LÄS MER
19. Noise analysis of mixeers for RF receivers
Sammanfattning : .... LÄS MER
20. Flexible Receivers in CMOS for Wireless Communication
Sammanfattning : Consumers are pushing for higher data rates to support more services that are introduced in mobile applications. As an example, a few years ago video-on-demand was only accessed through landlines, but today wireless devices are frequently used to stream video. LÄS MER