Open AccessDesign and implementation of a broad-band high gain low noise amplifier for 3G/4G applications
Author(s) -
Ahmed M. Abdelmonem,
Ahmed S.I. Amar,
Amir Almslmany,
Ibrahim L. Abdalla,
Fathi A. Farag
Publication year - 2021
Publication title -
indonesian journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.241
H-Index - 17
eISSN - 2502-4760
pISSN - 2502-4752
DOI - 10.11591/ijeecs.v23.i2.pp725-732
Subject(s) - low noise amplifier , noise figure , electronic engineering , amplifier , microstrip , effective input noise temperature , open loop gain , computer science , broadband , noise (video) , bandwidth (computing) , electrical engineering , engineering , telecommunications , automatic gain control , cmos , artificial intelligence , image (mathematics)
The main aim of the paper is designing and implementing a broadband low-noise-amplifier (LNA) based on compensated matching network techniquein order to get high stable gain, low noise figure, low cost and smaller sizefor 3G/4G communication system applications at 2 GHz with bandwidth 600MHz. The Advanced Design System simulates the proposed circuit (ADS).The implementation was done with a class A bias circuit and a low noise transistor BFU 730F with a lower Noise Figure (NFmin) 0.62 dB. Collectorcurrent is measured to be 5.8mA and base current is 19.1μA with a supply voltage of 2.25V. The new design proposed a (NFmin) of 0.62 dB with a 17.8dB high stable amplifier gain. The microstrip lines (MSL) and compensated matching network techniques were used to improve the LNA’s stability and achieve a good result. The LNA board is implemented and assembled on the FR4 botton layer material. The results are virtually non existence equivalent between the simulated and the measured results.