Unlock instant, AI-driven research and patent intelligence for your innovation.

A High Efficiency Power Amplifier

A power amplifier, high-efficiency technology, applied in the fields of microelectronics, communications, and semiconductors, which can solve the problems of decreased gain, unsatisfactory efficiency improvement, and increased cost.

Active Publication Date: 2018-12-21
DYNAX SEMICON
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The Doherty power amplifier can only reach the maximum efficiency value under specific power (saturated output and specific output power);
[0006] 2. Two power amplifier tubes are needed, which increases the cost;
In fact, due to the parasitic parameters of the power amplifier tube and the existence of the knee voltage, it is difficult to achieve, which often leads to unsatisfactory efficiency improvement under low power, and at the same time causes a decrease in gain

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
  • A High Efficiency Power Amplifier
  • A High Efficiency Power Amplifier
  • A High Efficiency Power Amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 It is a circuit structure diagram of a high-efficiency power amplifier provided in Embodiment 1 of the present invention. The amplifier provided in this embodiment can provide different output powers, and can work in a saturated state under different output powers. The working type of the high-efficiency power amplifier provided by the present invention can be class A, class B, class AB, class C power amplifier.

[0028] Such as figure 1 As shown, the power amplifier includes a gain control circuit 10, an input matching network 11, an amplifying module 12 and an output matching network 13 electrically connected in sequence, as well as a digital signal processing module 14 and a power supply module 15; the first output of the digital signal processing module 14 end is electrically connected to the power supply module 15, and the second output end of the digital signal processing module 14 is electrically connected to the gain control circuit 10;

[0029] Wher...

Embodiment 2

[0046] Figure 5 It is a circuit structure diagram of a high-efficiency power amplifier provided by Embodiment 2 of the present invention. The amplifier automatically adjusts the impedance value of the output matching network according to the power of the input signal, so that the power amplifier works in a saturated state at different output power levels. This embodiment is based on the first embodiment, the power amplifier also includes: a coupler 16, a delay circuit 17 and a detector 18;

[0047] The input end of the coupler 16 is used to receive the input signal, the first output end of the coupler 16 is electrically connected to the input end of the wave detector 18, and the second output end of the coupler 16 is electrically connected to the input end of the delay circuit 17;

[0048] The input and output ends of the delay circuit 17 are electrically connected to the second output end of the coupler 16 and the gain control circuit 10 respectively, for delaying the input...

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 a high efficiency power amplifier. The power amplifier includes a gain control circuit, an input matching network, an amplifier module and an output matching network which are sequentially electrically connected; and a digital signal processing module and a power supply module. A first output end of the digital signal processing module is electrically connected to the power supply module, and a second output end of the digital signal processing module is electrically connected to the gain control circuit. The output matching network is an adjustable matching network of voltage regulation. The digital signal processing module receives and processes a control signal, the first output end of the digital signal processing module outputs a voltage regulation command, and the power supply module receives the voltage regulation command and outputs the regulated voltage, through which an impedance value of the output matching network is adjusted. The power amplifier can work in a saturation state at different output power, and the efficiency of the power amplifier is greatly improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical fields of semiconductors, microelectronics and communications, and in particular to a high-efficiency power amplifier. Background technique [0002] Efficiency is one of the indicators at the heart of a communication system. Most of the energy consumption of the communication system comes from the power amplifier of the core module of the communication system. How to improve the efficiency of power amplifiers has become an urgent problem to be solved in the industry. For airborne, shipborne, vehicle-mounted and other communication systems, the fuel and batteries that can be carried are limited, so the efficiency of the power amplifier is very important. [0003] In the prior art, power amplifier efficiency improvement technologies mainly include: Doherty power amplifier and envelope tracking technology. [0004] The Doherty power amplifier is an active load modulation technology, and the 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): H03F1/02H03F3/21
CPCH03F1/02H03F3/21
Inventor 杨天应张乃千张永胜
Owner DYNAX SEMICON