Author(s) : Athira K.B, Prameela B

Volume & Issue : VOLUME 2 / 2017 , ISSUE 1

Page(s) : 40-46


Ultra Wideband (UWB) technology is capable of transmitting data over 3.1-10.6GHz frequency band with very low power consumption and high data processing rates. Low noise amplifier (LNA) is typically the first stage of a receiver whose performance greatly affects the overall receiver performance. This work presents the design of UWB LNA with resistive feedback and shunt peaking techniques. A Cascode inductive degeneration LNA has been initially designed. Resistive shunt feedback LNA is generated from this basic topology. Bandwidth extension technique using shunt inductive peaking has been employed on the resistive shunt feedback LNA. The designs are simulated using Cadence Virtuoso Spectre using CMOS gpdk180 for 3.1-5GHz lower UWB applications. The resistive shunt feedback LNA shows a maximum voltage gain of 23.3 at 4GHz and a minimum NF of 1.67 at 4.2GHz using 1.8 V supply. The resistive feedback LNA which employs shunt inductive peaking technique has an extended 3-dB bandwidth of 4.21GHz compared to the basic resistive shunt feedback LNA that achieves 3.5GHz bandwidth.


Bandwidth extension, inductive degeneration, Low noise amplifier (LNA), resistive shunt feedback, Shunt inductive peaking, Ultra wideband technology(UWB).


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