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A kind of multimode power amplifier and its mobile terminal

A technology of power amplifier and cascade amplification, applied in power amplifiers, amplifiers, high-frequency amplifiers, etc., can solve the problems of low power amplifier efficiency and large matching loss, and achieve the effect of high integration, low cost and small area

Active Publication Date: 2018-06-29
安徽赛因斯先进技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of load matching loss is large, and the efficiency of the power amplifier is low in an environment where only narrowband work is required

Method used

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  • A kind of multimode power amplifier and its mobile terminal
  • A kind of multimode power amplifier and its mobile terminal
  • A kind of multimode power amplifier and its mobile terminal

Examples

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Embodiment Construction

[0043] In this embodiment, a multi-mode power amplifier is connected in a cascaded manner by using at least two stages of amplifying circuits. By flexibly configuring the bias voltage or bias current of each unit amplifying unit in each stage of amplifying Under the power output requirements, the RF gain, linearity and efficiency of the power amplifier are optimized. At the same time, the power amplifier adopts the adjustable design technology of the load matching circuit, thus realizing a design scheme covering the wideband working mode and the narrowband working mode. In addition, this flexible and efficient power amplifier is compatible with 3G / 4G signals and can achieve high performance in various communication systems. Specifically, the multimode power amplifier includes: an M-level cascaded amplifying circuit and an output matching circuit; the i-th cascaded amplifying circuit of the M-level cascaded amplifying circuit includes N i unit amplifying units connected in para...

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Abstract

The invention discloses a multi-mode power amplifier and application thereof. The multi-mode power amplifier is high in integration level, more flexible, adjustable in power and wide in working band. According to the multi-mode power amplifier and application thereof, at least two stages of amplifying circuits are connected in a cascading mode, the bias voltage or bias current of each amplifying unit of each stage of amplifying circuit is flexibly configured, and thus optimization of the radio-frequency gain, linearity and efficiency of the power amplifier can be achieved under different power output requirements; meanwhile, the design technology with an load matching circuit adjustable is adopted, and thus one design scheme covers a broadband working mode and a narrowband working mode. Besides, the flexible and efficient power amplifier can be compatible with 3G / 4G signals and achieve high performance in multiple communication modes. The structural design of the multi-power and multi-mode radio-frequency amplifier and modules thereof can be simplified, and thus the power mode and the working bandwidth mode of the power amplifier can be adjusted to meet the requirement for multiple communication modes.

Description

technical field [0001] The invention relates to the technical field of radio frequency power amplifier design, in particular to a wide-narrowband adjustable multi-mode power amplifier compatible with 3G and 4G applications with high efficiency and high linearity and a mobile terminal thereof. Background technique [0002] The radio frequency transmitting front-end module is a key component for radio frequency terminal devices to realize signal transmission. Currently, with the rapid growth of global wireless communication users and users' higher-end experience requirements for wireless communication, the market demand for wireless communication bandwidth is growing rapidly. In order to solve this market demand, more and more dedicated wireless communication frequency bands have been opened up around the world and are becoming more and more crowded. Modulation and demodulation methods with high frequency band utilization, such as: 3G Wideband Code Division Multiple Access (W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/24H03F3/19H03F3/21H03F1/02
CPCH03F1/0222H03F3/19H03F3/211H03F3/245H03F2200/27H03F2200/387
Inventor 马雷彭小滔蔡志强
Owner 安徽赛因斯先进技术有限公司
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