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Power amplification system and processing method thereof

A technology of power amplification and power amplification circuit, which is applied in power amplifiers, improved amplifiers to increase efficiency, improved amplifiers to reduce nonlinear distortion, etc., can solve the difficulties in meeting the requirements of wireless communication systems, multi-band broadband linear power amplifier systems, Complicated circuit structure and other issues, achieve high efficiency performance, avoid limited devices, and simple circuit structure

Active Publication Date: 2017-10-31
COMBA TELECOM SYST CHINA LTD
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AI Technical Summary

Problems solved by technology

[0003] The current multi-band wideband linear power amplifiers are all based on digital predistortion (DPD) linearization technology, but because DPD needs to use broadband A / D (analog-to-digital conversion), D / A (digital-to-analog conversion) and other devices, these devices are subject to export Due to the strict restrictions of the country, and its circuit structure is very complex, it is difficult to realize the existing multi-band broadband linear power amplifier system, which cannot meet the requirements of the wireless communication system

Method used

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  • Power amplification system and processing method thereof
  • Power amplification system and processing method thereof
  • Power amplification system and processing method thereof

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Embodiment Construction

[0029] The present invention will be further elaborated below in conjunction with specific examples.

[0030] Such as figure 1 As shown, a power amplification system includes a signal screening circuit 1, a radio frequency predistortion circuit 2, a combining circuit 3, a Doherty power amplification circuit 4, a coupling circuit 5, and a feedback frequency selection circuit 6 connected in sequence, and a radio frequency predistortion circuit 2 It is connected with the feedback frequency selection circuit 6.

[0031] Wherein, the signal screening circuit 1 screens out input signals of various frequency bands from the radio frequency input signals;

[0032] The radio frequency predistortion circuit 2 performs predistortion processing on the input signal and the feedback signal corresponding to the input signal generated by the feedback frequency selection circuit 6, respectively, to generate a corresponding predistortion signal;

[0033] The combining circuit 3 performs combin...

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Abstract

The present invention provides a power amplification system and a processing method thereof. The system includes a signal screening circuit, a radio frequency predistortion circuit, a combining circuit, a Doherty power amplification circuit, a coupling circuit and a feedback frequency selection circuit connected in sequence. The radio frequency predistortion circuit The circuit is connected with the feedback frequency selection circuit. The power amplifier system of the invention can support n (n=2, 3, 4, ...) frequency bands, has wide bandwidth, small volume, low cost and is easy to implement. Using radio frequency predistortion (RFPD) technology and multi-frequency broadband Doherty technology, the high linearity performance and high efficiency performance of the system are realized, and the power amplification system does not need to use any wideband A / D, D / A and other devices, avoiding the limitation device troubles.

Description

【Technical field】 [0001] The invention relates to the technical field of wireless communication, in particular to a power amplification system and a processing method thereof. 【Background technique】 [0002] With the rapid development of wireless communication, people have higher and higher requirements on the quality, speed and stability of wireless communication. Currently there are 2G (second generation mobile communication technology, including GSM and CDMA), 3G (third generation mobile communication technology, including CDMA2000, WCDMA and TD-SCDMA), 4G (fourth generation mobile communication technology, including TD- LTE and FDD-LTE standard) and other mobile communication networks and WLAN (Wireless Local Area Networks, wireless local area network), repeated investment in network construction is very serious, and property coordination and construction are also extremely difficult. Co-construction and sharing of multi-frequency bands and multi-communication systems i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/32H03F1/07H03F3/20
Inventor 林锡贵谢路平刘江涛李娣蒋伯川
Owner COMBA TELECOM SYST CHINA LTD
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