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Power amplifier

A power amplifier, power amplification technology, applied in power amplifiers, differential amplifiers, DC-coupled DC amplifiers, etc., can solve the compromise, multi-mode power amplifiers are difficult to solve linearity and efficiency, power amplifiers are difficult to support linearity and nonlinearity Dual working modes and other issues to achieve the effect of reducing power consumption, optimizing linearity and efficiency, and improving efficiency

Inactive Publication Date: 2014-01-22
TSINGHUA UNIV
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Problems solved by technology

[0004] However, a lot of research has been carried out on multi-mode power amplifiers in the prior art, but it is still difficult for these multi-mode power amplifiers to solve the trade-off problem of linearity and efficiency, so it is difficult for the power amplifiers in the prior art to truly simultaneously Support linear and non-linear dual working mode

Method used

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Embodiment Construction

[0021] The configurable wireless transmitter provided by the present invention will be described below in conjunction with the accompanying drawings and specific embodiments.

[0022] see figure 1, the first embodiment of the present invention provides a configurable wireless transmitter 10, and the configurable wireless transmitter 10 can be used as an independent integrated chip. The configurable wireless transmitter 10 includes a digital baseband circuit 100, a digital-to-analog conversion circuit 200, an analog baseband circuit 300, a radio frequency front-end circuit 400, a frequency synthesizer 510, a bandgap reference source circuit 600, a serial control interface circuit 710 and parallel data interface circuit 720 . The radio frequency front-end circuit 400 includes three parallel paths of a power pre-amplifier 420 , a power amplifier 430 and a feedthrough buffer 450 . The power pre-amplifier 420 is used in broadband trunking applications to pre-amplify radio frequenc...

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Abstract

A power amplifier comprises a power amplification stage and an impedance transformation stage. The power amplification stage is connected with the impedance transformation stage in series. A differential cascade circuit structure is adopted in the power amplification stage, and the impedance transformation stage is formed by connecting a three-level parallel resonance network, a fundamental wave resonance network and an L-type impedance transformation network in series. The power amplifier has a linear configurable mode and a non-linear configurable mode, the working frequency range covers 0.1GHz to 1.5 GHz and optimization of linearity and efficiency can be realized through flexible configuration under different scenes.

Description

technical field [0001] The invention relates to a power amplifier in the radio frequency field, in particular to a power amplifier with two configurable operating modes, linear and nonlinear. Background technique [0002] With the increasing demands of users for multi-function, high data rate, high mobility and low-cost communication, the International Telecommunication Union has successively introduced various wireless communication standards. These communication standards include cellular communication standards (2G-2.5G-3G), wireless LAN communication standards (802.11a / b / g / n, etc.), broadcast communication standards (DAB, DVB, DMB, etc.) and navigation communication standards (GPS , Galileo, GLONASS, Beidou) and so on. Faced with a wide variety of standards, users prefer to support different communication services through only one terminal device. [0003] The power amplifier is the key circuit module in the RF front-end chip, and it is also the part that consumes the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H03F3/45
Inventor 池保勇殷韵王志华
Owner TSINGHUA UNIV
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