A digital predistortion linear broadband radio frequency power amplifier device

Abstract

The invention discloses an administrable digital predistortion linear broadband radio-frequency power amplifier (ADPDWPA) device. The device comprises a broadband radio-frequency signal processing module, a broadband digital predistortion DPD digital unit, a broadband radio-frequency power amplifier, a broadband radio-frequency analog feedback loop module and a control administration module, wherein the broadband digital predistortion DPD digital unit comprises a broadband digital predistortion engine module, a DAC, an ADC1, an ADC2 and a broadband radio-frequency transmitter module. The ADPDWPA device adopts a modularization structure concept easy to expand, has high flexibility, low cost, easy administration and openness, supports various communication system requirements, only needs to replace different modules and upgrade different algorithms, can be applied to a base station system with different communication systems, can also be applied to a mobile communication base station system of the next generation and provides a reliable application basis for the industrialization of a future high-efficiency linear broadband radio-frequency power amplifier.

Description

technical field [0001] The invention relates to the technical field of radio frequency power amplifiers, in particular to a digital predistortion linear broadband radio frequency power amplifier device. Background technique [0002] Facing the Peak-to-Average Power Ratio (PAPR) problem encountered by Orthogonal Frequency Division Multiplexing (OFDM) technology in the next generation mobile communication system (IMT-Advanced), Many peak clipping (Crest Factor Reduction, ie CFR) techniques and methods have been proposed. However, for improving the linearity and efficiency of a Wideband High Power Amplifier (W-HPA), it is very limited to only use the CFR technology to improve the efficiency of the W-HPA. In order to meet the trend of miniaturization and environmental protection of base station equipment in IMT-Advanced mobile communication systems, research on high-efficiency, linear broadband RF power amplifier technology is also gradually emerging. Facing the wide bandwidth...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of baseband signal connection in the research of digital predistortion linearization technology adaptive digital predistortion algorithm to the greatest extent under the condition of existing devices, and to provide a manageable digital predistortion linear wideband radio frequency Power amplifier (Administrable Digital Pre-distortion Wideband Power Amplifier, namely ADPDWPA) device adopts the concept of modular structure that is easy to expand, introduces a control management module, and combines broadband radio frequency signal processing module + broadband DPD digital unit + broadband radio frequency power amplifier + broadband radio frequency The analog feedback loop module and the control management module form a manageable digital predistortion linear wideband radio frequency power amplifier device. The ADPDWPA device speeds up the research progress of the DPD linear wideband radio frequency power amplifier, which can get rid of the difficulty of connecting with the baseband part and can be made into an independent The DPD linear broadband RF power amplifier provides a reliable application basis for the industrialization of high-efficiency, linear broadband RF power amplifiers in the future

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