Mixed-class amplifier

A power amplifier and mode technology, applied in amplifiers, high-frequency amplifiers, improved amplifiers to improve efficiency, etc., can solve problems such as unreachable output power, efficiency drop, breakdown, etc.

Active Publication Date: 2015-09-30
TELEFON AB LM ERICSSON (PUBL)
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Depending on the transistor type, these high and low peaks can cause a drop in efficienc

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
  • Mixed-class amplifier
  • Mixed-class amplifier
  • Mixed-class amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] For the following description of exemplary embodiments, reference is made to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. The following detailed description does not limit the invention. Rather, the scope of the invention is defined by the appended claims. For simplicity, the following embodiments are discussed in relation to transistors with corresponding output circuits. However, the embodiments to be discussed next are not limited to this system, but can be applied to other systems.

[0044] Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily referring to the same embodiment. F...

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 power amplifier (10). The power amplifier (10) is allocated to be used for generating impedance at the harmonic frequency, so that the power amplifier (10) is operated in a C-class mode within the low output amplitude range, and is operated in an F-class or inverted F-class mode within the high output amplitude range.

Description

[0001] This application is a divisional application of the Chinese patent application No. 200880130947.7 filed on September 1, 2008, with the title of "hybrid amplifier". technical field [0002] The present invention relates generally to an amplifier capable of operating in different class modes, and more particularly to methods for configuring an amplifier to have selected characteristics of a Class C amplifier and selected characteristics of a Class F or inverting Class F amplifier mechanisms and techniques. Background technique [0003] The rapid development of mobile telecommunication services has led to an increasing demand for low cost, low power and reduced size and weight devices. One such device is found in transmitters in base stations and terminals for mobile telephony, as well as in transmitters for broadcast and other wireless systems. The transmitter uses a power amplifier to amplify the radio frequency (RF) signal to the antenna. In general, power amplifier...

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): H03F3/19H03F3/217H03F1/02H03F1/56
CPCH03F1/0205H03F1/56H03F3/19H03F3/217
Inventor 里卡德·赫尔贝里
Owner TELEFON AB LM ERICSSON (PUBL)
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