The Load-Modulated Linearizer: A Technique for Intermodulation Cancellation in PA Systems
conference paper
A novel application utilizing the load-modulated balanced amplifier (LMBA) principle to actively absorb individual out-of-band intermodulation distortion (IMD) components at the output of a power amplifier operating in high compression is presented. The system is able to correct AM/AM distortion by absorbing the unwanted IMD components using active load-modulation. We achieve IMD suppression of about 30dB, while the main PA operates at the P3dB compression point and above, with a phase and amplitude error tolerance of ±2 degrees and ±0.5 dB, respectively. It retains the power conservation properties of the LMBA and achieves linearization at a very low power and complexity penalty. (C) 2022 IEEE.
Topics
TNO Identifier
984477
ISBN
9781665491327
Publisher
Institute of Electrical and Electronics Engineers Inc.
Source title
2022 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, BCICTS 2022
Pages
174-177
Files
To receive the publication files, please send an e-mail request to TNO Repository.