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

Electronic system, radio frequency power amplifier and its bias point self-adjustment method

A radio frequency power and amplifier technology, applied in the field of radio frequency power amplifiers with self-adjusting bias point, can solve the problems of output power saturation, limit power gain output power, etc., to avoid output power saturation, large input power and output power range Effect

Active Publication Date: 2018-03-23
ADVANCED SEMICON ENG INC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the output power of the amplifier is increased to a certain level, the load line of the amplifier operating in Class AB mode may enter the cut off region, thereby causing gain compression. Gain compression leads to output power saturation (saturation)
Since the DC operating point of the class AB amplifier is close to the cutoff region, when the output power of the class AB amplifier increases to a certain level, the gain compression mechanism in the cutoff region will limit the power gain and output power of the class AB amplifier

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
  • Electronic system, radio frequency power amplifier and its bias point self-adjustment method
  • Electronic system, radio frequency power amplifier and its bias point self-adjustment method
  • Electronic system, radio frequency power amplifier and its bias point self-adjustment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Rather, this number of exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like numbers indicate like elements throughout.

[0054] It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, these various elements should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a secon...

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 discloses an electronic system, a radio frequency power amplifier and a bias point self-adjusting method thereof. The radio frequency power amplifier includes a bias voltage circuit, an output stage circuit and a dynamic bias voltage control circuit. A bias circuit receives a system voltage, and the bias circuit provides an operating voltage based on the system voltage. The output stage circuit receives an operating voltage to operate at an operating bias point. The dynamic bias control circuit receives the operating voltage and outputs a compensation voltage to the bias circuit according to the variation of the operating voltage. When the input power increases and the operating voltage drops to cause the operating bias point to shift, the bias circuit increases the operating voltage according to the received compensation voltage to restore the operating bias point.

Description

technical field [0001] The present invention relates to a radio frequency power amplifier, and in particular to a radio frequency power amplifier with self-adjusting bias point. Background technique [0002] With the development of the Internet, people are accustomed to receiving large amounts of information quickly, especially after the advancement of wireless communication technology in recent years, personal mobile products, such as mobile phones, personal digital assistants and other products, have become popular at an astonishing speed. People want to be able to grasp real-time information, but also hope to have real-time online support. Therefore, the Wireless Local Area Network (WLAN) and the third generation (3G) / fourth generation (4G) network that combine the Internet and wireless communication are just a solution to meet such needs of people. [0003] RF power amplifiers play a very important role in communication systems. In order to achieve better power-added e...

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 Patents(China)
IPC IPC(8): H03F1/32H03F3/20H03F3/189
Inventor 丁兆明刘谦晔
Owner ADVANCED SEMICON ENG INC
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