Adaptive linearization technique for a multi-port amplifier

We propose a novel adaptive linearization technique for amplifier arrays. It can miniaturize the array-antenna system. The technique uses the specific intermodulation distortions (IMDs) at the output ports in the array. The detected IMD power level can be used to optimize the linearizer's chara...

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Bibliographic Details
Main Authors: Kaho, T., Yamaguchi, Y., Nakagawa, T., Araki, K.
Format: Conference Proceeding
Language:English
Subjects:
Adaptive arrays
adaptive compensation
Adaptive systems
amplifier
Antenna arrays
array antenna
Delay lines
Detectors
High power amplifiers
IMD
Linear antenna arrays
linearization
Linearization techniques
MIMO
OFDM
Power amplifiers
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Description
Summary:We propose a novel adaptive linearization technique for amplifier arrays. It can miniaturize the array-antenna system. The technique uses the specific intermodulation distortions (IMDs) at the output ports in the array. The detected IMD power level can be used to optimize the linearizer's characteristics. This paper describes the principles, verified both experimentally and mathematically for a 4-port amplifier array. The proposed technique will be a viable solution for multi-user MIMO OFDM downlink systems.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2006.4429557