Power amplifier linearization method and apparatus

一种线性化、放大器的技术，应用在改进放大器以减少非线性失真、放大装置的零部件、放大器等方向，能够解决线性化改进程度局限性等问题
CN102447442AInactive Publication Date: 2012-05-09POSTECH ACAD IND FOUND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
POSTECH ACAD IND FOUND
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a method and apparatus for linearizing a power amplifier using a digital signal process (DSP), and particularly, is a method and apparatus for effectively linearizing an amplifier which has a plurality of distortion generating sources. To this end, there is a plurality of compensation methods and compensation units which can generate inverse distortion signals corresponding to the distortion components outputted by the plurality of distortion generating sources, thereby making it possible to provide superior linearity.
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Description

technical field

[0001] The present invention relates to methods and apparatus for linearizing power amplifiers, and more particularly to methods and apparatus for efficiently linearizing power amplifiers having multiple sources of distortion generation. Background technique

[0002] Recently, power amplifiers in mobile communication systems are required to amplify signals efficiently and with high linearity characteristics. Furthermore, next generation mobile communication systems utilize complex modulation schemes in order to transmit a large amount of data to users in a short time.

[0003] Consequently, the peak-to-average power ratio (PAPR) of the signal increases. Typically, to provide linear amplification, the power amplifier operates at a back off point that is equal to or greater than the signal's peak-to-average power ratio.

[0004] However, at this point, the power amplifier exhibits rather low efficiency characteristics. This is due to the fact that the heat v...

Claims

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