Author/Authors :
Akhchaf, I. Abdelmalek Essaadi University - Faculty of Sciences - Department of Physics, Information and Telecommunications Systems Laboratory, Morocco , Meloui, M. Abdelmalek Essaadi University - Faculty of Sciences - Department of Physics, Information and Telecommunications Systems Laboratory, Morocco , Khoulji, S. Abdelmalek Essaadi University - Faculty of Polydisciplinary - Department of Statistics and Informatics, Morocco , Essaaidi, M. Abdelmalek Essaadi University - Faculty of Sciences - Department of Physics, Information and Telecommunications Systems Laboratory, Morocco , Kerkeb, M.L. Abdelmalek Essaadi University - Faculty of Sciences - Department of Physics, Information and Telecommunications Systems Laboratory, Morocco
Abstract :
The current design is especially suitable for use in multi-standard wireless receiver, in recent years; there has been a growing market for dual band transceivers for various wireless standards. IT is therefore the study of modeling and characterization of a dual LNA in radio communications receivers for their improvements. The LNA with constant bias circuit allows very interesting performance of the process. Dual-band Low Noise Amplifier (LNA) operates in the 3.9 GHz and 4.48 GHz frequency bands. RF circuit designs take two parallel LNAs with a single transistor ATF10136, and bandpass filter (BPF) networks are usually used match both the input and output ports at two different bands, are matched to 50Ω without external elements. A conventional source degeneration inductor is eliminated for higher signal gain while providing reasonable input impedance. The LNA using a constant-gm bias circuit achieves competitive and robust performances over process, voltage and temperature variation. Simulation results indicate a Noise Figure below 1.5dB and S21 above 11 dB in all frequency bands and also input and output return loss are below -11 dB for all desired frequency band while drawing 2.5mA current from a 5V power supply.
NaturalLanguageKeyword :
System Radio Frequency (RF) , band , pass filter (BPF) , Low Noise Amplifiers (LNA) , dual band amplifiers , Advanced Design System (ADS)
