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A wireless signal transmitter and its processing method

A transmitting device and wireless signal technology, applied in the transmission system, electrical components, etc., can solve the problems of out-of-band spectrum spurs, power amplifier output signal distortion, etc., to improve the transmission power and transmission error vector amplitude, and reduce spurs Effect

Active Publication Date: 2022-07-22
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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  • A wireless signal transmitter and its processing method
  • A wireless signal transmitter and its processing method
  • A wireless signal transmitter and its processing method

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Embodiment Construction

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

[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 techniques, meth...

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Abstract

The present disclosure relates to a wireless signal transmitting device and a processing method thereof. The transmitting device includes: a transmitting path, which receives and transmits baseband signals, and includes a digital predistortion (DPD) conversion module, a DAC module, a first mixer, a power amplifier and a transmitting antenna; a feedback path, the feedback path is downstream of the power amplifier Accessed at a location upstream of the transmit antenna, and includes a second mixer and ADC module to output a feedback baseband signal; and a synchronization module configured to synchronize the transmit baseband signal and the feedback baseband signal. Through the cascade connection of the digital predistortion (DPD) conversion module and the radio frequency power amplifier (PA), the two nonlinear distortion functions are combined to realize a high linearity and distortion-free system, which improves the transmit power and transmit error of the transmitter. Vector Magnitude (EVM) metric that reduces spurious emissions in the spectrum.

Description

technical field [0001] The present disclosure relates to the field of predistortion of power amplifiers, and more particularly, to a device for transmitting wireless signals and a method for processing the same. Background technique [0002] The power amplifier is an important part of the transmitting system. In the front-end circuit of the transmitting system, the power of the radio frequency signal generated by the modulation oscillator circuit is very small, and it needs to go through a series of amplification, such as a buffer stage, intermediate amplification stage, final power amplification stage, etc., after obtaining enough RF power , and then feed it to the antenna for radiation. In order to obtain sufficient output power, a power amplifier must be used. [0003] On the one hand, in the wireless communication system, the nonlinear characteristics of the power amplifier will distort the output digital modulation signal, which is not conducive to digital demodulatio...

Claims

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Application Information

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Patent Type & Authority Patents(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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