22-02-2013, 04:08 PM
Ultra wideband LNA with adaptive gain control for application of wireless communication
Ultra wideband LNA.pdf (Size: 244.85 KB / Downloads: 33)
Introduction to UWB Communication
A technology for transmitting information spread over a large
bandwidth that should be able to share spectrum with other
users.
LNA characteristics
Ideal characteristics of LNA in Receivers.
1 min F
2 Large voltage gain to reduce Ftot
3 Handling large signals without significant distortion
4 must present 50 ohms to the input source
Wideband Amplifier Topologies
Shunt resistor type
shunt feedback amplifier
Inducted source degenerated amplifier
Common gate amplifier.
Distributed amplifier.
Cascode amplifier
Future Work and Conclusion
So far i have to study the complete characteristics of UWB LNA
and analysis of suitable topologies to design the amplifier. The
future work will be based adaptive gain control of UWB LNA,
which is mostly used in application of wireless communication