Wideband LNA with reactive feedback at the input matching network

Author

Jamshidi, Paria ; Naseh, Sasan

Author_Institution

Eng. Dept., Ferdowsi Univ. of Mashhad, Mashhad, Iran

fYear

2011

fDate

11-14 Dec. 2011

Firstpage

330

Lastpage

333

Abstract

This paper presents a 3-9 GHz CMOS low noise amplifier (LNA) designed in a 0.18 μm CMOS technology which uses negative feedback with magnetic coupling at the input of a common source-LNA instead of resistive feedback. Using the proposed topology, power gain of 14.1±1 dB and noise figure between 2.24-2.45 dB was achieved in a bandwidth (BW) of 3-9 GHz. The total drawn power of the proposed circuit from a 1.5-V power supply is 5.1 mW, while the input and output matching criteria are well satisfied. The values of all elements were determined using genetic algorithms.

Keywords

CMOS integrated circuits; feedback; low noise amplifiers; wideband amplifiers; CMOS low noise amplifier; frequency 3 GHz to 9 GHz; genetic algorithms; input matching network; magnetic coupling; negative feedback; noise figure 2.24 dB to 2.45 dB; power 5.1 mW; reactive feedback; size 0.18 mum; voltage 1.5 V; wideband LNA; CMOS integrated circuits; CMOS technology; Gain; Impedance matching; Low-noise amplifiers; Power demand; Wideband; Low noise amplifier (LNA); magnetic coupling; ultra wideband (UWB); wideband input matching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems (ICECS), 2011 18th IEEE International Conference on

Conference_Location

Beirut

Print_ISBN

978-1-4577-1845-8

Electronic_ISBN

978-1-4577-1844-1

Type

conf

DOI

10.1109/ICECS.2011.6122280

Filename

6122280