Broadband integrated Doherty power amplifier based on low-Q output network

A power amplifier and output network technology, applied in the direction of improving amplifiers to expand bandwidth, improving amplifiers to improve efficiency, etc., can solve problems such as limiting the overall bandwidth, and achieve the effect of bandwidth improvement and impedance transformation ratio reduction.

Active Publication Date: 2020-07-14
优镓科技(北京)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves the efficiency at which signals are transmitted by an electronic device (such as a phone). It allows for better signal transmission over longer distances without increasing its own weight or volume. By reducing resistance between different parts within this system, more data can be sent through faster speeds while maintaining good quality reception compared with traditional methods like radio waves.

Problems solved by technology

This patented technical solution describes how to increase the effective area or range of integration of wireless communication devices while reducing their sizes by integrating different types of signal processing techniques like quadrature phase shift keying (QPSK) into one device called PowerAmplex®. However, this approach also faces challenges due to factors including reduced input voltage at certain frequencies, increased noise levels caused by nonlinear effects, limited space availability, etc., making it difficult to integrate these techniques effectively without increasing circuit dimensions beyond acceptable values.

Method used

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  • Broadband integrated Doherty power amplifier based on low-Q output network
  • Broadband integrated Doherty power amplifier based on low-Q output network
  • Broadband integrated Doherty power amplifier based on low-Q output network

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that the singular forms "a", "an", "said" and "the" used herein may also include plural forms unless otherwise stated. It should be further understood that the word "comprising" used in the description of the present invention refers to

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Abstract

The invention discloses a broadband integrated Doherty power amplifier based on a low-Q output network, the saturation power of an auxiliary power amplifier is n times that of a main power amplifier,n is greater than or equal to 1, and the optimal load impedance of the auxiliary power amplifier is 1/n of that of the main power amplifier; a main power amplifier output matching network is a first low-pass equivalent lambda/4 line, and the characteristic impedance of the main power amplifier output matching network is multiple times the optimal load impedance of the main power amplifier; an auxiliary power amplifier output matching network is formed by connecting a second low-pass equivalent lambda/4 line and a high-pass equivalent lambda/4 line in series, the characteristic impedance of thesecond low-pass equivalent lambda/4 line is equal to the optimal load impedance of the auxiliary power amplifier, and the characteristic impedance of the high-pass equivalent lambda/4 line is multiple times of the optimal load impedance of the auxiliary power amplifier. Via the Doherty power amplifier, the impedance conversion ratio of the Doherty power amplifier in a fallback region is reduced through the low-Q output network, and therefore the bandwidth is remarkably improved; moreover, the impedance conversion ratio of the saturation region is the same as that of the fallback region, and therefore the overall bandwidth is not limited. The improvement of the bandwidth is helpful for reducing the size and cost of communication equipment such as a mobile terminal, a base station and the like.

Description

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Claims

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Application Information

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Owner 优镓科技(北京)有限公司
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