Integrated digital predistortion power amplifier

A power amplifier and digital pre-distortion technology, applied in power amplifiers, improved amplifiers to increase efficiency, improved amplifiers to reduce nonlinear distortion, etc., can solve the problems of difficult heat dissipation, low integration, large volume, etc., to solve heat dissipation problems , the effect of integrated design

Inactive Publication Date: 2008-08-20
WUHAN HENGTAITONG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the shortcomings of existing digital predistortion power amplifiers such as large volume, difficult heat dissipation and low integration, and propose an integrated digital predistortion power amplifier

Method used

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  • Integrated digital predistortion power amplifier
  • Integrated digital predistortion power amplifier
  • Integrated digital predistortion power amplifier

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0026] The integrated digital predistortion power amplifier of the present invention, please refer to image 3 As shown, it is composed of 4 layers. From top to bottom, the first layer is the second circuit board 2 integrated with the second processing system 2'. In this embodiment, the DPD&CFR system 2' is integrated; the second layer It is an aluminum alloy shielding isolation cover 9; the third layer is the first circuit board 1 after the integration of the radio frequency conversion system 11 and the Doherty HPA system 12' as the first processing system 12; the fourth layer is the aluminum alloy base 8. In addition, there is a radio frequency signal input port 110 which is arranged on the metal base 8 and is electrically connected to the radio frequency conversion system 11, and a radio frequency signal output port 120 which is electrically connected to t...

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Abstract

The present invention discloses an integrated digital predistortion power amplifier which comprises a frequency transmitting and frequency varying system and a first processing system that is used for increasing the power amplifying efficiency, and the two systems are electrically connected with each other, and a second processing system that is used for increasing the linearization degree of the power amplifying and/or reducing the peak value of the power amplifying signal. The frequency transmitting and frequency varying system and the first processing system are respectively integrated on two comparatively-independent areas of the first circuit board. The second processing system is independently integrated on the second circuit board. A metal shielding insulating cover is arranged between the first and the second circuit board. The shielding insulating cover is arranged with at least two through plug jacks. The frequency transmitting and frequency varying system and the first processing system on the first circuit board are respectively connected with the second processing system on the second circuit board electrically through the two plug jacks with the form of slot and base pin. The first processing system is especially the Doherty HPA system and the second system is especially the DPD amp;CFR system. The power amplifier of the invention has the advantages of small volume, high integration degree and better heat radiating effect.

Description

【Technical field】 [0001] The invention relates to a device for amplifying and processing signals in the field of mobile communication, in particular to an integrated digital predistortion power amplifier. 【technical background】 [0002] In recent years, with the large-scale construction of 3G networks, in order to reduce CAPEX (equipment investment) and OPEX (operating costs), the improvement of power amplifier technology has increasingly become the focus of operators. The core issue of the power amplifier is linearization and high efficiency. Therefore, the new generation of power amplifier linearization technology DPD (Digital Predistortion) technology has been greatly developed. However, the development of technology to enhance efficiency is relatively lagging behind. Common technologies that can improve power amplifier efficiency include: Doherty technology, envelope tracking (Envelope tracking), envelope elimination and regeneration technology (Envelope elimination and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H03F1/32H03F1/02H03F1/07
Inventor 张占胜刘兴现易勇谢斌潘栓龙
Owner WUHAN HENGTAITONG TECH
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