Abstract:
With the demand of 3G wireless network access is
increasing, high performance Wide Band Code Division
Multiple Access (WCDMA) transceivers are needed. Low
Noise Amplifier (LNA) is the key component of WCDMA
transceivers. In this paper, we designed the various
configurations of LNA (Single-ended LNA, Differential LNA,
Current-reuse LNA) at 180nm technology and compared their
performance metrics. The LNA is designed for low power,
high gain applications and it provides a series of good
performance in Noise Fig. (NF), Linearity, Power
consumption and Fig. of merit (FOM). Our analysis shows
that Current-reuse LNA (CRLNA) achieve the best gain and
FOM among all the other configurations. The FOM of
CRLNA is 1.5507GHz/mW which is higher than others LNA
configurations. Further, we proposed a novel endeavor in the
form of an Artificial Neural Network (ANN) model which
estimates different amplifier parameters based upon the
simulated results, thereby, providing an alternative to the
popular simulation tools which are based on complex
analytical and mathematical models and are time consuming.
