Title :
Design and linearization of solid state power amplifier using Pre-distortion Technique
Author :
Swaminathan, J.N. ; Kumar, Pranaw
Author_Institution :
Dept. of Electron. & Commun. Eng., Chettinad Coll. of Eng. & Technol., Karur, India
Abstract :
The solid state power amplifier applications are in airborne radars, Missiles and communication systems. It offers a peak power output of 400 watts. We designed the SSPA using Ghorbani model. Due to the Non Linearity nature of SSPA, both power and spectral efficiency of the signal is reduced. To improve signal power and spectral efficiency of a 16QAM modulated signal, we linearize SSPA by Predistortion Technique. Using this method the ACPR of the signal can be improved by 20db.
Keywords :
airborne radar; distortion; linearisation techniques; missiles; power amplifiers; quadrature amplitude modulation; radar signal processing; spectral analysis; ACPR; Ghorbani model; QAM; SSPA; adjacent channel power ratio; airborne radar; digital communication system; linearization; missile; predistortion technique; quadrature amplitude modulation; signal power; solid state power amplifier; spectral efficiency; Band pass filters; Equations; Least squares approximation; Mathematical model; Power amplifiers; Power harmonic filters; Solid modeling; ACPR-Adjcent Channel Power Ratio; QAM- Quadrature Amplitude Modulation; SSPA-Solid State Power Amplifier;
Conference_Titel :
Computer Communication and Informatics (ICCCI), 2013 International Conference on
Conference_Location :
Coimbatore
Print_ISBN :
978-1-4673-2906-4
DOI :
10.1109/ICCCI.2013.6466115
