Broadband Doherty power amplifier with continuous inverse class F and class J mixed

A broadband and amplifying circuit technology, applied in the field of radio frequency communication, can solve problems such as poor performance, and achieve the effect of improving efficiency and bandwidth

Pending Publication Date: 2019-09-20
HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the bandwidth of the Doherty power amplifier, the impedance transformation ratio of the quarter-wavelength line is usually reduced to reduce its qua

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
  • Broadband Doherty power amplifier with continuous inverse class F and class J mixed
  • Broadband Doherty power amplifier with continuous inverse class F and class J mixed
  • Broadband Doherty power amplifier with continuous inverse class F and class J mixed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0039] In the prior art, the Doherty power amplifier uses a single continuous mode, which brings problems: the greater the power back-off, the smaller the solution space of the fundamental wave impedance of the carrier power amplifier, and the more difficult it is to achieve high broadband efficiency.

[0040] In order to expand the impedance solution space of the carrier power amplifier under power back-off and meet the requirement of broadband high efficiency, the present invention introduces the idea of ​​mixing continuous inverse F-type and J-type modes.

[0041] see figure 1 , shown as a structural block diagram of a continuous inverse Class F and Class J mixed broadband Doherty power amplifier in the present inventio...

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 a broadband Doherty power amplifier with continuous inverse class F and class J mixed. The broadband Doherty power amplifier comprises a broadband Wilkinson power divider, a phase compensation line, a carrier power amplification circuit, a peak power amplification circuit and a broadband post-matching circuit. The carrier power amplification circuit comprises a carrier broadband input matching circuit, a carrier amplifier transistor and an impedance converter; the peak power amplification circuit comprises a peak broadband input matching circuit, a peak amplifier transistor, a peak harmonic control/suppression network, a peak fundamental wave tuning network and a reverse phase compensation line; and the broadband post-matching circuit comprises a carrier harmonic control network and a post-matching tuning network. The carrier amplifier works in a continuous inverse class F mode when input power is saturated, works in a class J mode when input power is back-off by 6dB, and the peak amplifier works in a continuous inverse class F mode when input power is saturated and does not work when input power is back-off by 6dB.

Description

technical field [0001] The invention relates to the technical field of radio frequency communication, in particular to a continuous inverse Class F and Class J mixed broadband Doherty power amplifier and a design method thereof. Background technique [0002] With the rapid development of wireless communication technology, radio frequency microwave technology is becoming more and more important in people's daily life. In order to transmit as much data as possible within a limited spectrum bandwidth, communication providers usually use very complex modulation methods, which will lead to a larger peak-to-average ratio (PAPR) of the signal, while using traditional power amplifiers such as class A, Class AB is very inefficient for amplifying non-constant envelope signals, especially at high power backoffs. The RF power amplifier with high efficiency and high linearity has become one of the research hotspots in academia and industry. Doherty power amplifiers have become the main...

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): H03F1/02H03F1/42H03F3/24
CPCH03F1/02H03F1/42H03F3/245
Inventor 程知群王涛刘国华周国祥郭灿天赐
Owner HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST 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