AC stacked power amplifier for wireless terminal

A power amplifier and wireless terminal technology, applied in the direction of power amplifiers, etc., can solve the problems of high power and high efficiency output difficulty, limited high power, high efficiency capability, high power and high efficiency capability, etc., to achieve increased gain And the effect of power capacity, improving efficiency index, improving gain and efficiency index

Pending Publication Date: 2020-04-17
QINGHAI UNIV FOR NATITIES
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Problems solved by technology

[0003] (1) High power and high efficiency capabilities are limited: typical power amplifiers use a multi-channel parallel combination structure or a distributed structure. The combination efficiency of these two structures is limited, resulting in part of the power loss in the combination network, which limits high power. , high efficiency capability
[0004] (2) The low voltage amplification capability is limited: in order to increase the output power of the amplifier, a transistor stack structure is often used to increase the bias voltage of the amplifier and at the same time increase the AC voltage swing
The interstage stacking st

Method used

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  • AC stacked power amplifier for wireless terminal
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[0020]Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0021] An embodiment of the present invention provides an AC stack power amplifier for a wireless terminal, including an input matching single-end to differential power supply network, an AC three-stack amplification network, and an output matching differential to single-end power supply network.

[0022] Such as figure 1 As shown, the input end of the input matching single-ended to differential power supply network is the input end of the entire power amplifier, its first output end is connected to the first input end of the AC three-stack amplifying network, and its second output end is connected to the The second inpu...

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Abstract

The invention discloses an AC stacked power amplifier for a wireless terminal. The power amplifier comprises an input matching single-ended to differential power supply network, an AC three-stack amplification network and an output matching differential to single-ended power supply network. According to the invention, the core architecture of the power amplifier adopts the AC three-stack amplification network, and has the characteristics of high power and high gain at low power supply voltage; and meanwhile, the good parasitic parameter inhibition of the differential amplifier in the microwavefrequency band is combined with the power synthesis characteristic of the transformer network, so the whole power amplifier obtains good high gain, high efficiency and high power output capability.

Description

technical field [0001] The invention relates to the fields of field effect transistor radio frequency power amplifiers and integrated circuits, in particular to an AC stacking power amplifier used for wireless terminals in a radio frequency microwave communication system. Background technique [0002] With the rapid development of wireless communication systems and RF microwave circuits, RF front-end transceivers are also developing in the direction of high performance, high integration, and low power consumption. Therefore, the market urgently needs the radio frequency and microwave power amplifier of the transmitter to have high output power, high gain, high efficiency, low cost and other performances. However, when using integrated circuit technology to design and implement RF and microwave power amplifier chip circuits, its performance and cost are subject to certain constraints, mainly reflected in: [0003] (1) High power and high efficiency capabilities are limited: ...

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Application Information

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IPC IPC(8): H03F3/24
CPCH03F3/24
Inventor 林倩邬海峰
Owner QINGHAI UNIV FOR NATITIES
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