JETIREXPLORE- Search Thousands of research papers



Published in:

Volume 8 Issue 2
February-2021
eISSN: 2349-5162

Unique Identifier

JETIR2102102

Page Number

869-879

Share This Article


Title

DESIGN OF AN ACTIVE FEEDBACK LOW NOISE AMPLIFIER WITH IMPROVED LINEARIZATION

ISSN

2349-5162

Cite This Article

"DESIGN OF AN ACTIVE FEEDBACK LOW NOISE AMPLIFIER WITH IMPROVED LINEARIZATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 2, page no.869-879, February-2021, Available :http://www.jetir.org/papers/JETIR2102102.pdf

Abstract

The application of active feedback using source follower provides wide bandwidth. However, the source follower introduces non-linearity within the passband. This study proposes a way to mitigate this problem through the use of a resonant tank connected along the feedback path, which exploit the blocking capacity of the capacitor to linearize the source follower. Also, we adopted the inductive peaking technique for bandwidth enhancement, noise performance improvement and circuit stability. With the combination of these techniques, an improved linearity for the active feedback low noise amplifier for wideband receivers was achieved while improving the noise performance. Simulated result of the low noise amplifier showed a power gain of 13.13dB and a 3dB bandwidth of 16.88MHz. It achieved an input return loss < -10dB, reverse isolation better than -23.4dB, output return loss < -14dB. Output total RMS noise achieved is 9.1μV while dissipating and average of 67.512mW from a 9V supply. The simulated result for both input and output return losses are < -10dB, this implies good impedance matching at both input and output of the LNA. This work shows it is possible to linearize an active feedback LNA by adding a resonant tank along the feedback path.

Key Words

Active-Feedback, Low noise amplifier, resonant tank linearization, linear, wideband.

Cite This Article

"DESIGN OF AN ACTIVE FEEDBACK LOW NOISE AMPLIFIER WITH IMPROVED LINEARIZATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 2, page no. pp869-879, February-2021, Available at : http://www.jetir.org/papers/JETIR2102102.pdf

Publication Details

Published Paper ID: JETIR2102102
Registration ID: 305687
Published In: Volume 8 | Issue 2 | Year February-2021
DOI (Digital Object Identifier):
Page No: 869-879
ISSN Number: 2349-5162

Download Paper

Preview Article

Download Paper




Cite This Article

"DESIGN OF AN ACTIVE FEEDBACK LOW NOISE AMPLIFIER WITH IMPROVED LINEARIZATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 2, page no. pp869-879, February-2021, Available at : http://www.jetir.org/papers/JETIR2102102.pdf




Preview This Article


Downlaod

Click here for Article Preview