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Designing an LNA for a CDMA front endsignal processing
Designing an LNA for a CDMA front end
LNA design is critical in modern communication systems. Understanding necessary additional design considerations can save both time and money.
By Jarek Lucek and Robbin Damen
T
he smallest signal that can be received by a receiver defines the receiver’s sensitivity. The largest signal that can be received by a receiver establishes an upper power level limit of what can be handled by the system while preserving voice or data quality. The dynamic range of the receiver, the difference between the largest possible received signal and the smallest possible received signal, defines the quality of the receiver chain. The low noise amplifier (LNA) function plays an important role in the receiver design. Its main function is to amplify ext
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