Research Repository

Combined Low Frequency and Third Harmonic Injection in Power Amplifier Linearization

Bulja, S and Mirshekar-Syahkal, D (2009) 'Combined Low Frequency and Third Harmonic Injection in Power Amplifier Linearization.' IEEE Microwave and Wireless Components Letters, 19 (9). pp. 584-586. ISSN 1531-1309

Full text not available from this repository.


Simultaneous injection of the difference frequency and triple frequency signals into the main RF amplifier (alongside the fundamental frequency signals) offers an independent improvement of IM3 and IM5. This advantage is not achievable by other reported techniques. Mathematical analysis of this new power amplifier linearization is resented in order to establish the potential of the proposed technique. The analysis shows that the injection of the difference frequency signal reduces IM3, though it may influence IM5. However, any deterioration of IM5 improves significantly as a result of the injection of the triple frequency signals without disturbing the advantage gained by the difference frequency injection on the levels of IM3. For the validation of the theoretical results, an experimental amplifier system operating at 880 MHz was built. The two-tone measurement confirmed the theoretical predictions.© 2006 IEEE.

Item Type: Article
Uncontrolled Keywords: Amplifier linearization; harmonic injection; IM3 and IM5
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 08 Sep 2014 15:50
Last Modified: 23 Sep 2022 18:31

Actions (login required)

View Item View Item