Method and apparatus for keeping static current of power amplifier constant

A technology of power amplifier and quiescent current, which is applied in the field of communication, can solve problems such as poor correction performance, and achieve the effect of improving dynamic correction performance

Active Publication Date: 2013-12-25
HUAWEI TECH CO LTD
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since changes in the output power of the power amplifier will cause changes in the state of the power amplifier (such as temperature, quiescent current, drain voltage, gate voltage, etc.), DPD has poor correction performance when the state of the power amplifier changes greatly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for keeping static current of power amplifier constant
  • Method and apparatus for keeping static current of power amplifier constant
  • Method and apparatus for keeping static current of power amplifier constant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0071] In the following, specific examples will be used to describe in detail respectively.

[0072] In the process of changing the output power of the power amplifier with time, when the power amplifier changes from high power to low power or no power, the heat consumption decreases, and the temperature of the power amplifier drops; w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses a method and an apparatus for keeping the static current of a power amplifier constant. The method is to calculate a gate voltage compensation within a second set time starting from an initial change moment. The method specifically comprises calculating an initial value of the gate voltage compensation of the initial change moment according to a first output power of the power amplifier within a first set time before the initial change moment and a second output power of the power amplifier of the initial change moment, and calculating a subsequent value of the gate voltage compensation after the initial change time according to the thermal conductivity of the power amplifier; and adjusting the gate voltage of the power amplifier at a corresponding time point within the second set time by using the gate voltage compensation. The corresponding apparatus is further disclosed. Based on the above innovative mechanism, the constancy of the static current of the power amplifier is facilitated when the output power of the power amplifier is changed, so that the dynamic correction performance of the power amplifier is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for maintaining a constant quiescent current of a power amplifier. Background technique [0002] In the wireless communication system, the dynamic correction performance of the power amplifier of the base station is an important index to measure the performance of the base station. When the base station is working in the actual network, the traffic volume is constantly changing, which leads to the constant change of the output power of the power amplifier, so the dynamic correction performance is an important indicator reflecting the actual working performance of the base station. Existing technologies such as figure 1 The digital predistortion (Digital Predistortion, DPD) system shown is used as a correction method for the nonlinearity of the power amplifier. The DPD system is cascaded with a predistortion element (Predist...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20
Inventor 曾志雄薛玉杰孙捷李珽邓明金
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap