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Load modulation differential power amplifier, base station and mobile terminal

A technology of differential power and load modulation, applied in differential amplifiers, amplifiers, and improving amplifiers to expand bandwidth, etc., can solve problems such as difficulty in meeting bandwidth requirements, and achieve the effect of high fallback efficiency and huge application prospects.

Pending Publication Date: 2020-06-26
优镓科技(北京)有限公司 +1
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  • Abstract
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Problems solved by technology

However, even with various bandwidth expansion technologies, the bandwidth of Doherty power amplifiers is still generally lower than 50%, which is difficult to meet the increasing bandwidth requirements, and it is necessary to explore new high-efficiency technologies

Method used

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  • Load modulation differential power amplifier, base station and mobile terminal
  • Load modulation differential power amplifier, base station and mobile terminal
  • Load modulation differential power amplifier, base station and mobile terminal

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solutions 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 unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

The invention provides a load modulation differential power amplifier, a base station and a mobile terminal. The load modulation differential power amplifier comprises a main power amplifier branch and an auxiliary power amplifier branch, the main power amplifier branch comprises a main power amplifier unit, the auxiliary power amplifier branch comprises a differential power amplifier, the outputend of the main power amplifier branch is connected with one output terminal of the auxiliary power amplifier branch, and the other output terminal of the auxiliary power amplifier branch is connectedwith a rear matching network. The load modulation technology is applied to the differential power amplifier, the broadband advantage of the differential power amplifier is reserved, high fallback efficiency similar to that of a Doherty power amplifier can be achieved, and the load modulation differential power amplifier has huge application prospects in a communication system.

Description

technical field [0001] The invention belongs to the microwave power amplifier technical field of wireless communication technology, and in particular relates to a load modulation differential power amplifier, a base station and a mobile terminal. Background technique [0002] In order to improve spectrum efficiency, modern communication signals often use complex modulation methods such as OFDM, which brings about the problem of peak-to-average ratio (PAPR). High PAPR brings difficulties to the design of radio frequency power amplifiers (hereinafter referred to as power amplifiers), and especially has an adverse effect on the efficiency index of the power amplifier. The traditional class AB linear power amplifier has high efficiency near the saturation power, but when the output power decreases, its efficiency drops sharply. Since the power amplifier works in the fallback power region most of the time under high PAPR, the average efficiency of the class AB power amplifier is...

Claims

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Application Information

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IPC IPC(8): H03F3/45H03F1/42H03F1/02
CPCH03F3/45076H03F1/42H03F1/0205
Inventor 吕关胜陈文华陈晓凡黄飞周航
Owner 优镓科技(北京)有限公司
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