Envelope synthesis power supply and radio frequency power module with envelope synthesis power supply

A technology of power supply and current source, applied in the field of communication, can solve the problem that the switching frequency of the switch module is difficult to reach the speed of envelope synthesis

Pending Publication Date: 2022-07-01
SG MICRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In high-burst carrier applications, it is even necessary to increase the envelope synthesis speed to the range of several ns. For silicon-based circuits with limited speed, it is difficult for the switching frequency of the switch module to meet the envelope synthesis speed requirements.

Method used

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  • Envelope synthesis power supply and radio frequency power module with envelope synthesis power supply
  • Envelope synthesis power supply and radio frequency power module with envelope synthesis power supply
  • Envelope synthesis power supply and radio frequency power module with envelope synthesis power supply

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Embodiment Construction

[0037] In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0039] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings...

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Abstract

The invention discloses an envelope synthesis power supply and a radio frequency power module with the envelope synthesis power supply. The envelope synthesis power supply is used for providing power supply voltage for a power supply end of a radio frequency amplifier, and comprises a current source, an envelope driver, a first inductor and a second inductor, the output end of the current source is connected to the power supply end through the first inductor, and the current source is used for generating output current according to a set value so as to provide most power of the radio frequency amplifier; the output end of the envelope driver is connected to the power supply end through a first capacitor, and the envelope driver is used for generating output voltage changing along with the radio frequency envelope signal so as to track the radio frequency envelope signal. The envelope synthesis power supply generates the power supply voltage based on an envelope synthesis control scheme for rapidly adjusting the output voltage of the current source, and the switch module in the current source does not need to change rapidly along with a reference envelope signal, so that the loss and electromagnetic interference of the switch module can be reduced, and the cost is reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, and more particularly, to an envelope synthesis power supply and a radio frequency power module having the envelope synthesis power supply. Background technique [0002] In communication technology, the power supply voltage of the RF amplifier is greater than the output voltage amplitude to ensure the normal operation of the RF amplifier. The supply voltage of the RF amplifier varies with the signal power to improve power utilization. Therefore, an envelope tracking power supply is used to provide the supply voltage of the RF amplifier. [0003] In 2G wireless communication, both voice and GPRS communication use constant envelope carrier. The carrier amplitude depends on the air channel coupling relationship between the base station and the terminal. The envelope tracking power supply only needs to follow the base station-terminal coupling relationship. In 2.5GEDGE technology and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/189H03F3/20
CPCH03F3/189H03F3/20
Inventor 谭磊
Owner SG MICRO
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