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High voltage envelope tracker for optimizing performance of radio frequency power amplifier

A technology of envelope tracker and radio frequency power, which is applied in the field of high voltage envelope tracker, can solve the problems of difficult design of power combiner for out-of-phase modulation signals, and the lack of wide application of out-of-phase modulation radio frequency power amplifiers, etc., to achieve optimization Effects of linearity, improved efficiency, and wide operating bandwidth

Active Publication Date: 2015-07-15
ETRA SEMICON SUZHOU CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The out-of-phase modulation RF power amplifier takes full advantage of the high-efficiency characteristics of the switching amplifier without sacrificing the linearity index; its disadvantage is that it requires additional calculation and power consumption in the signal decomposition part, and the power combination of the out-of-phase modulated signal device is difficult to design
These problems have also led to out-of-phase modulation RF power amplifiers not being widely used in portable mobile terminals.

Method used

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  • High voltage envelope tracker for optimizing performance of radio frequency power amplifier
  • High voltage envelope tracker for optimizing performance of radio frequency power amplifier
  • High voltage envelope tracker for optimizing performance of radio frequency power amplifier

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Embodiment 1

[0036] figure 1 An envelope tracker proposed by the present invention is shown. The envelope tracker 101 receives a pair of differential envelope signal inputs V envp and V envn , while receiving a single-ended envelope signal V extracted from the differential envelope input AMP ; After being processed by the envelope tracker, one or several output signals are obtained as the power supply voltage of the radio frequency power amplifier. exist figure 1 Two power amplifiers 102 and 103 are shown in the figure as representatives, which are respectively a power amplifier for 3G / 4G standard and a power amplifier for 2G GSM standard. In practical applications, the number of radio frequency power amplifiers is not limited to two, but often more. The envelope tracker 101 mainly includes the following main functional modules:

[0037] 1. The boost module 104, its main function is based on the single-ended envelope signal V AMP The battery voltage V BAT ...

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Abstract

The invention discloses a high voltage envelope tracker for optimizing performance of a radio frequency power amplifier. The high voltage envelope tracker for optimizing the performance of the radio frequency power amplifier comprises a voltage boosting module, a voltage reducing module and a linear power driving module; the voltage boosting module converts a power voltage VBAT into a direct voltage which is a little larger than the maximum envelope signal according to a single-end envelope signal VAMP, and the direct voltage supplies power to the voltage reducing module and the linear power driving module; the voltage reducing module is matched with the linear power driving module to supply power to the radio frequency power amplifier to achieve undistorted power source envelope; the linear power driving module receives a pair of differential envelope signal inputs including Venvp and Venvn. The power source envelope of the radio frequency power amplifier can be controlled to optimize the efficiency of the radio frequency power amplifier in a wide output power range, the working band width of the radio frequency power amplifier is improved, and the efficiency of the whole radio frequency power amplifier can be improved.

Description

Technical field [0001] The present invention belongs to the field of radio frequency integrated circuit technology, which involves a power package that controls a radio frequency power amplifier to optimize the efficiency of the power amplifier at a wider output power range and improves its working bandwidth to optimize the high performance of RF power amplifier performance.Voltage package tracker. Background technique [0002] RF power amplifier is an indispensable key component in various wireless communication applications. It is used to enlarge the power -to -frequency signal output from the sender output to meet the power requirements of the radio frequency signal required for wireless communication.Because modern portable wireless communication equipment usually uses battery power, the power consumption requirements used in the device are very strict.RF power amplifier is a major power consumption component in wireless transceiver. Therefore, it must be reduced as much as p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/32H03F1/02H03F1/42H03F3/193H03F3/20
Inventor 郭亚炜徐志伟张连星路宁
Owner ETRA SEMICON SUZHOU CO LTD
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