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Low power consumptive mixed mode power amplifier

一种功率放大器、放大器的技术，应用在功率放大器、放大器、门控放大器等方向，能够解决功率效率降低等问题，达到效率最大化、降低功耗、改善功率效率的效果

Inactive Publication Date: 2010-10-20
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the power efficiency is relatively reduced in the low output mode with the highest practical usage

Method used

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  • Low power consumptive mixed mode power amplifier
  • Low power consumptive mixed mode power amplifier
  • Low power consumptive mixed mode power amplifier

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Embodiment Construction

[0050] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. However, this invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0051] The low power consumption mixed mode power amplifier of the present invention provides high power efficiency through a non-linear amplifier in a low output mode and a desired output through a highly linear amplifier in a high output mode. The high output amplifier and the low output amplifier are configured to have a gain difference. This gain difference can be adjusted freely, and thus the power level of the system can be easily adjusted. A low output amplifier includes a plurality of nonlinear amplifier units connected in paral...

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Abstract

Provided is a low power consuming mixed mode amplifier. The power amplifier includes: a low output amplifier circuit generating a power amplified result having high efficiency in a low output mode the most frequently used; a high output amplifier circuit generating an amplified result of high linearity in a high output mode of a region consuming the most power; an amplifier controller selectively activating the low and high output amplifier circuits according to a power level of an input signal. The high and low output amplifier circuits have a predetermined gain difference.

Description

technical field [0001] The invention disclosed herein relates to power amplifiers in wireless communication terminals and systems, and more particularly, to mixed-mode power amplifiers having at least two modes of operation. [0002] The present invention results from the following research, which was realized as part of the IT R&D program of the Ministry of Information Communications and Information Technology Alliance Association (MIC / IITA) [2005-S-017-03], Integrated development of ultra low power RF / HW / SW SoC. Background technique [0003] According to the latest development of information communication technology, based on various forms of communication infrastructure such as high-speed Internet, wireless Internet, portable Internet, terrestrial digital multimedia broadcasting (DMB), satellite DMB, etc., such as movies, images, music content, e-books, etc. Various content is in active use. When current technological development trends are considered, future mobile te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20
CPCH03F3/211H03F2203/21103H03F1/32H03F2200/318H03F2203/21139H03F2203/7233H03F1/0277H03F3/72H03F1/0261H03G3/3042H03F2200/451H03F3/20
Inventor 朴敏康太荣崔炳建崔鈗皓金柄助金永皓朴耿奂玄锡奉严洛雄
Owner ELECTRONICS & TELECOMM RES INST
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