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

Power amplifier and radio frequency device comprising same

A technology for power amplifiers and carrier amplifiers, applied in amplifiers, improved amplifiers to improve efficiency, amplifier types, etc., can solve problems such as maintaining high efficiency, achieve the effects of reducing power leakage and enhancing back-off efficiency

Pending Publication Date: 2020-08-14
TELEFON AB LM ERICSSON (PUBL)
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with increasing PAPR, it is difficult for classical Doherty PAs to mainta

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
  • Power amplifier and radio frequency device comprising same
  • Power amplifier and radio frequency device comprising same
  • Power amplifier and radio frequency device comprising same

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] For illustrative purposes, details are set forth in the following description to provide a thorough understanding of the disclosed embodiments. However, it is obvious to those skilled in the art that the embodiments can be implemented without these specific details or with equivalent arrangements.

[0040] As mentioned above, the off-state impedance of the peak amplifier is an important parameter that can affect the power added efficiency (PAE) of the inverted asymmetric Doherty PA. However, the current amplifier topology can only maintain a moderate peak amplifier off-state impedance for high-power applications, because their traditional configuration limits the further enhancement of the peak off-state impedance. Since the impedance is lower than the expected peak path disconnection state, it may impair the carrier / main amplifier backoff efficiency.

[0041] Specifically, for figure 1 In the existing solution shown, in order to achieve an enhanced peak off-state impedance...

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

A power amplifier is disclosed for amplifying an input signal and providing an amplified signal to a load at a junction node. The power amplifier comprises a splitter network, a carrier amplifier pathand a peaking amplifier path. The peaking amplifier path comprises a first impedance transformer coupled between a peaking output matching network and the junction node to enhance the off-state impedance of the peaking amplifier. The carrier amplifier path comprises a second impedance transformer coupled between a carrier output matching network and the junction node.

Description

technical field [0001] Embodiments of the present disclosure relate generally to the field of electronic components, and more particularly, to power amplifiers and radio frequency devices including power amplifiers. Background technique [0002] This section introduces aspects that may facilitate a better understanding of the disclosure. Accordingly, the statements in this section should be read in this light and should not be construed as an admission of what exists in the prior art or of what does not exist in the prior art. [0003] In 4G and beyond cellular base stations, advanced digital modulation schemes are used for high spectral efficiency. The corresponding radio frequency (RF) signal exhibits a large peak-to-average power ratio (PAPR), which is simultaneously amplified in a power amplifier (PA). Therefore, the instantaneous transmit power will vary strongly and rapidly. Due to the high PAPR excitation, conventional RF PAs will suffer from very low average effic...

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): H03F1/07
CPCH03F1/0288H03F3/245H03F1/56H03F2200/222H03F2200/387H03F2200/451H03F2200/321H04B1/0458H03F3/211H04B1/04H04B1/40H04B2001/0416H04W88/08
Inventor 王占仓颜丹
Owner TELEFON AB LM ERICSSON (PUBL)
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