Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Efficient linear radio frequency power amplifying device and method

A radio frequency power and amplifying device technology, applied in high frequency amplifiers, power amplifiers, improving amplifiers to reduce nonlinear distortion, etc., can solve the problem of high real-time processing complexity, achieve high data transmission rate transmission and coverage performance, easy to use Achieving the effect of simple structure

Inactive Publication Date: 2012-12-26
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the development of pre-distortion technology is relatively mature, there are still some limitations in the application of the fourth-generation broadband wireless communication
Because in the actual application process, the effect of predistortion depends on the accuracy of the nonlinear model of the power amplifier, and the real-time processing complexity is high

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
  • Efficient linear radio frequency power amplifying device and method
  • Efficient linear radio frequency power amplifying device and method
  • Efficient linear radio frequency power amplifying device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a high-efficiency linearized radio frequency power amplification device, such as figure 1 As shown, it includes a radio frequency power amplifier 1 , an adaptive limit loop circuit 2 , a radio frequency bandpass filter 3 , and a digital switching power supply 4 . The radio frequency power amplifier 1 is used for amplifying radio frequency signals. The adaptive limit loop loop 2 is connected with the radio frequency power amplifier 1 to implement nonlinear negative feedback control to the radio frequency power amplifier; the adaptive limit loop loop inputs a radio frequency input signal, and the output phase changes with A pulse signal modulated by the radio frequency input signal. The radio frequency bandpass filter 3 is connected with the output terminal of the adaptive limit loop loop 2, in order to demodulate the pulse signal, and output the amplified radio frequency input signal; the digital switching power supply 4 and the self The adapti...

Embodiment 2

[0070] This embodiment provides a high-efficiency linearized radio frequency power amplification device, such as figure 2 As shown, the difference between it and Embodiment 1 is that: the high-efficiency linearized radio frequency power amplification device also includes an amplitude modulation signal generation module 9 connected to the digital switching power supply 4, and the amplitude modulation signal generation module 9 outputs the The carrier amplitude modulation signal of the radio frequency input signal; the digital switching power supply 4 controls the output transient power of the radio frequency power amplifier under the control of the carrier amplitude modulation signal of the radio frequency input signal. Specifically, the amplitude modulation signal generating module 9 may use a radio frequency envelope detector or a baseband I and Q digital signal processor.

[0071] This embodiment also provides a high-efficiency linearized radio frequency power amplification...

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 invention provides an efficient linear radio frequency power amplifying device and method. The device comprises a radio frequency power amplifier used for amplifying a radio frequency signal, a self-adapting limit cycle circuit connected with the radio frequency power amplifier for performing nonlinear negative feedback control on the radio frequency power amplifier, a digital switch power supply respectively connected with the self-adapting limit cycle circuit and the radio frequency power amplifier for controlling the pulse signal to track the transient power self-adapting change of the radio frequency input signal, and a radio frequency band-pass filter connected with the output end of the self-adapting limit cycle circuit for demodulating the pulse signal and outputting the amplified radio frequency input signal, wherein the self-adapting limit cycle circuit inputs a radio frequency input signal and outputs a pulse signal having phase change modulated with the radio frequency input signal. The efficient linear radio frequency power amplifying device disclosed by the invention keeps the high efficiency and low power consumption, has the liner amplification function of bandwidth and large dynamic range so as to enable a base station to better realize high data transmission speed and coverage performance, effectively reduces the power consumption of a terminal and prolongs the service life of a battery.

Description

technical field [0001] The invention belongs to the technical field of fourth-generation broadband wireless communication, and relates to a power amplifier, in particular to a high-efficiency linearized radio frequency power amplification device and method. Background technique [0002] With the rapid development of wireless communication technology, there is a great demand for radio frequency systems for the application of new-generation broadband wireless communication systems. Traditional linear power amplifiers can only maintain linear transmission within a certain input range. When amplifying a broadband, high-power peak-to-average ratio baseband signal, the power amplifier will produce serious nonlinear effects, making the EVM quality of the transmitted signal low and directly Affect the receiving quality of the receiver and interfere with adjacent channel communication. In practical applications, in order to meet the stringent linear amplification requirements of wir...

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
IPC IPC(8): H03F3/20H03F3/189H03F1/32
Inventor 王萍
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com