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A multi-mode configurable class AB power amplifier

A technology of power amplifier and power amplification, which is applied in power amplifiers, differential amplifiers, DC-coupled DC amplifiers, etc., to achieve the effect of improving efficiency and reducing power consumption

Active Publication Date: 2017-06-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to propose a multi-mode configurable Class AB power amplifier, which is used to solve the problem that the current power amplifier can only achieve the maximum efficiency at the maximum output power

Method used

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  • A multi-mode configurable class AB power amplifier
  • A multi-mode configurable class AB power amplifier
  • A multi-mode configurable class AB power amplifier

Examples

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Embodiment

[0073] The present invention specifically designs a multi-mode configurable Class AB power amplifier so that it covers the 750MHz-1GHz frequency band and has three working modes: low power consumption mode, medium power consumption mode and high power consumption mode. Switching is realized by changing the size of transistors M1-M22 in the configurable power drive part, transistors M23-M34 in the configurable power amplification part, and the control word of the variable capacitor array C3-C6 capacitor array in the configurable impedance conversion part of. In addition, in each working mode, the sizes of the M23-M34 transistors are configurable at 1:1:2, so as to realize flexible adjustment of output power.

[0074] Fig. 4 is the change curve of the efficiency of the power amplifier with the output power. Fig. 4 (a) is the change curve of the efficiency of the traditional power amplifier with the output power. Fig. 4(b) is a variation curve of the efficiency of the power amp...

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Abstract

The invention discloses a multi-mode power amplifier configurable with Class AB in the field of radio-frequency power amplifiers and aims to solve the problems existing in researches of radio-frequency power amplifiers. The multi-mode power amplifier is capable of automatically adjusting operating modes including a low-power consumption operating mode, a medium-power consumption operating mode and a high-power consumption operating mode. The power amplifier is composed of a configurable power driving part, a configurable power amplifying part, a configurable impedance conversion part and a power detection and control part, wherein the power detection and control part is respectively connected with the configurable power driving part, the configurable power amplifying part and the configurable impedance conversion part, the configurable impedance conversion part is connected with the power detection and control part and the power amplifying part, and the configurable power driving part is connected with the configurable power amplifying part. The multi-mode power amplifier configurable with Class AB is capable of effectively improving efficiency and reducing power consumption, and covered frequency band is wide.

Description

technical field [0001] The invention relates to the field of radio frequency power amplifiers, in particular to a dual-band multimode configurable Class AB power amplifier device. Background technique [0002] At present, Wi-Fi (Wireless Fidelity) has been widely used in remote video surveillance, wireless medical care, smart home and Internet of Things and other fields. Compared with ZigBee (new wireless network data communication technology) and Bluetooth, Wi-Fi has great advantages in terms of transmission data rate and transmission distance, and can carry out video and other multimedia services within a radius of 100m, but low power consumption has always been It is the main problem restricting the application of Wi-Fi handheld devices. [0003] Facing the complex working environment of wireless transceivers, such as strong out-of-band and adjacent-channel interference signals, severe attenuation of signal channels, etc., traditional wireless transceiver designs must be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/20H03F3/45
Inventor 池保勇魏蒙张泽宏王志华
Owner TSINGHUA UNIV
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