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

Volume

1

fYear

2002

fDate

2002

Firstpage

105

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 3^rd 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2002. 9th International Conference on

Print_ISBN

0-7803-7596-3

Type

conf

DOI

10.1109/ICECS.2002.1045344

Filename

1045344