Title :
A new differential LNA topology for wireless applications
Author :
Pascoli, S. Di ; Fanucci, L. ; Neri, B. ; Zito, D.
Author_Institution :
Dipt. di Ingegneria dell´´Informazione, Pisa Univ., Italy
Abstract :
In this paper a new topology of differential low noise amplifier for wireless applications is presented. This solution allows a drastic area reduction, with respect to traditional emitter coupled topology, since it makes it possible to achieve integrated matching at the input by using only down-bond wiring. In this way no integrated inductors are needed. As shown by simulations, an increased linearity range can also be obtained, without impairing the noise figure. As an example of this new solution, a LNA has been designed for 2.44 GHz frequency operation. The main characteristics of this amplifier are: a noise figure of 1.56 dB, a voltage gain of 19.5 dB, an input impedance of 50 Ω, an input-referred 3rd intercept point of -7.25 dBm and a dissipated power equal to 19 mW.
Keywords :
UHF amplifiers; circuit simulation; differential amplifiers; inductors; integrated circuit bonding; integrated circuit design; integrated circuit modelling; integrated circuit noise; network topology; 1.56 dB; 19 mW; 19.5 dB; 2.44 GHz; 50 ohm; amplifier linearity range; amplifier noise figure; chip area reduction; down-bond wiring input integrated matching; emitter coupled topology; input dynamic range; input impedance; input-referred third intercept point; integrated inductors; low noise amplifiers; operating frequency; power dissipation; voltage gain; wire bonding inductors; Differential amplifiers; Frequency; Impedance matching; Inductors; Linearity; Low-noise amplifiers; Noise figure; Power amplifiers; Topology; Wiring;
Conference_Titel :
Electronics, Circuits and Systems, 2002. 9th International Conference on
Print_ISBN :
0-7803-7596-3
DOI :
10.1109/ICECS.2002.1045344
