Design and optimization of analog low noise amplifier circuit for wireless applications

Abstract

Heterogeneous Networks (HetNets) have become an emerging newlinetelecommunication architecture and will play an essential role in future wireless newlinecommunication systems. Integrating satellite, aerial, and terrestrial networks newlinerequires tailormade receiver frontend architectures. In all the receiver front ends, newlineLow Noise Amplifiers (LNA)s are the first block that determines the overall newlineperformance of the entire system. Therefore it necessitates the design of LNAs newlineto provide optimal performance for fixed satellite transponders and base station newlinereceivers for backhaul linkages. newlineThe objective of the thesis is to design a LNA with improved newlineperformance such as high gain, low noise, reduced nonlinearity and low power. newlineComplementary Metal Oxide Semiconductor (CMOS) differential LNA using newlineCurrent Reuse (CR), Capacitor Cross Coupling (CCC) and Body Bias newlinetechniques are proposed for achievement of high gain, good linearity and low newlinepower consumption. In order to reduce the power consumption further, newlineFolded Cascode (FC) LNA using Complementary Current Reuse (CCR) newlinetechnique and Diode connected Forward Body Biasing (FBB) techniques are newlineproposed. To enhance linearity, P-MOS Inter Modulation Distortion (IMD) newlinesinker technique is used. newlineTo have enhanced performance at the base station receivers, a two newlinestage pseudomorphic High Electron Mobility Transistor (pHEMT) based LNA is newlineproposed. In this LNA design Resistive Capacitive (RC) feedback technique is newlineused to obtain wide bandwidth and stability. Interstage network with high newlinetransconductance device is used for gain enhancement. The prototype model is newlinedeveloped using Low Temperature Cofired Ceramic (LTCC) in Advanced newlineDesign System (ADS). newline