Power amplifier

A power amplifier and amplification stage technology, applied in power amplifiers and other directions, can solve the problems of low cost performance and slow performance improvement of power amplifiers, and achieve the effect of improving large signal performance, low power consumption, and reducing matching components

Inactive Publication Date: 2010-09-22
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of low cost performance and slow performance improvement of power amplifiers in the prior art, the present invention provides a power amplifier with high cost performance and performance and is easy to implement

Method used

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Embodiment Construction

[0018] Below, the present invention will be further described in conjunction with the accompanying drawings.

[0019] First, please refer to figure 2 , figure 2 It is a structural schematic diagram of a power amplifier of the present invention, as can be seen from the figure, a power amplifier of the present invention is applied to a wireless local area network, including: a common emitter amplifier module 31; an emitter follower module 32, the emitter follower The module includes at least one transistor, the base of which is connected to the output terminal of the common emitter amplifier module 31; the power amplifier module 33 is connected to the emitter follower module.

[0020] The common emitter amplifier module 31 at least includes: a first SiGe heterojunction bipolar transistor T1 , a second SiGe heterojunction bipolar transistor T2 and a first bias terminal BIAS1 . The first bias terminal BIAS1 is connected to the collector of the first SiGe heterojunction bipolar...

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Abstract

The invention provides a power amplifier, which comprises a common emitter amplification stage module, an emitter following module and a power amplification stage module. The emitter following module comprises at least one transistor. The output end of the common emitter amplification stage module is connected with the base of the transistor. The power amplification stage module is connected with the emitter following module. The invention is applied to a wireless local area network and has the advantages of high linearity degree, low power dissipation, on-chip total integration and the like.

Description

technical field [0001] The invention belongs to the field of integrated circuit design and signal processing, and particularly relates to a power amplifier. Background technique [0002] RF and microwave millimeter wave power amplifier (Power Amplifier, PA) is an important part of RF integrated system and RF transmitter, widely used in the field of wireless communication, including GSM / CDMA / Bluetooth / WLAN, etc. [0003] Wireless local area network (Wireless Local Area Networks, WLAN) is a very convenient data transmission system, which uses radio frequency (Radio Frequency, RF) technology to replace the local area network formed by the old twisted-pair copper wires (Coaxial), making wireless The local area network can use the simple access structure to allow users to obtain information anytime and anywhere through it. Its system block diagram is as follows: figure 1 As shown, it includes a low-noise amplifier and a power amplifier, which are respectively connected to their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/21
Inventor 王勇胡少坚任铮王彬周伟
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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