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Wireless signal transmitting device and processing method thereof

A technology of a transmitting device and a processing method, which is applied in transmission systems, electrical components, etc., can solve problems such as out-of-band spectrum spurs, power amplifier output signal distortion, etc., and achieve the goal of increasing transmission power and transmitting error vector amplitude, and reducing spurs Effect

Active Publication Date: 2021-08-20
恒玄科技(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is a need for a wireless signal transmitting device and its processing method to solve the problems of output signal distortion and out-of-band spectrum spurious caused by nonlinear characteristics of existing power amplifiers

Method used

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  • Wireless signal transmitting device and processing method thereof
  • Wireless signal transmitting device and processing method thereof
  • Wireless signal transmitting device and processing method thereof

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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but are not intended to limit the present disclosure. For the various steps described herein, if there is no need for a contextual relationship between each other, the order described herein as an example should not be considered as a limitation, and those skilled in the art will know that the order can be adjusted, as long as It is enough not to destroy the logic between them so that the whole process cannot be realized.

[0020] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniq...

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Abstract

The invention relates to a wireless signal transmitting device and a processing method thereof. The transmitting device comprises a transmitting path which receives a transmitting baseband signal and comprises a digital pre-distortion (DPD) conversion module, a DAC module, a first mixer, a power amplifier and a transmitting antenna; a feedback path which is accessed at the downstream of the power amplifier and the upstream of the transmitting antenna, and comprises a second mixer and an ADC module so as to output a feedback baseband signal; and a synchronization module which is configured to perform synchronization processing on the transmitting baseband signal and the feedback baseband signal. Through cascade connection of a digital pre-distortion (DPD) conversion module and a radio frequency power amplifier (PA), two nonlinear distortion functions are combined, a high-linearity and distortion-free system is realized, the transmitting power and the transmitting error vector magnitude (EVM) index of a transmitting device are improved, and stray of a transmitting frequency spectrum is reduced.

Description

technical field [0001] The present disclosure relates to the field of predistortion of power amplifiers, and more specifically, to a wireless signal transmitting device and a processing method thereof. Background technique [0002] The power amplifier is an important part of the transmission system. In the pre-stage circuit of the transmitting system, the power of the RF signal generated by the modulation oscillator circuit is very small, and it needs to go through a series of amplifications, such as a buffer stage, intermediate amplification stage, final power amplification stage, etc. After obtaining sufficient RF power , and then fed to the antenna to radiate out. In order to obtain sufficient output power, a power amplifier must be used. [0003] On the one hand, in a wireless communication system, the nonlinear characteristics of the power amplifier will distort the output digital modulation signal. This distortion is not conducive to digital demodulation and will cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04
CPCH04B1/04H04B1/0475H04B2001/0408H04B2001/0425H04B2001/0433H04B1/62
Inventor 童伟峰张亮王志奇
Owner 恒玄科技(北京)有限公司
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