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Radio frequency front-end spread spectrum and despread processing method based on amplifier drain electrode modulation effect

A technology of radio frequency front-end and processing method, applied in electrical components, transmission systems, etc., can solve the problems of limited length of surface acoustic wave tapped delay line devices, large insertion loss, and limited application range, etc., and achieve flexible spreading code configuration capabilities , no insertion loss, highly flexible effect

Inactive Publication Date: 2019-08-23
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of this technology are as follows: since the pseudo-random code is determined by the physical structure of the surface acoustic wave tapped delay line itself, once the device design is completed, the pseudo-random code pattern cannot be flexibly configured; in addition, due to the large insertion loss and the limitation of the physical characteristics of the substrate, The device length (or number of taps) of the surface acoustic wave tapped delay line is limited; at the same time, due to the influence of the device development process level, the operating frequency of the device is not high, which limits its application range

Method used

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  • Radio frequency front-end spread spectrum and despread processing method based on amplifier drain electrode modulation effect
  • Radio frequency front-end spread spectrum and despread processing method based on amplifier drain electrode modulation effect
  • Radio frequency front-end spread spectrum and despread processing method based on amplifier drain electrode modulation effect

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Embodiment 1

[0055] As a preferred embodiment of the application, refer to the attached Figure 1-8 , this example discloses:

[0056] A radio frequency front-end spreading and despreading processing method based on the amplifier drain modulation effect, characterized in that: it includes a radio frequency front-end spreading processing method and a radio frequency front-end despreading processing method;

[0057] The RF front-end spread spectrum processing method specifically refers to: the input RF signal is input into the power divider, and the power divider divides the input RF signal into equal power, and through the phase shifter, divides the equal power into one road signal After 180-degree phase-shift processing, two branches of radio frequency signals are generated; the two branches of radio frequency signals are sent to power amplifier 1 and power amplifier 2 respectively, and power amplifier 1 and power amplifier 2 use the drain modulation effect of the power amplifier to realiz...

Embodiment 2

[0060] As another preferred embodiment of the present application, refer to the attached Figure 1-8 , this example discloses:

[0061] A radio frequency front-end spreading and despreading processing method based on the amplifier drain modulation effect, characterized in that: it includes a radio frequency front-end spreading processing method and a radio frequency front-end despreading processing method;

[0062] The RF front-end spread spectrum processing method specifically refers to: the input RF signal is input into the power divider, and the power divider divides the input RF signal into equal power, and through the phase shifter, divides the equal power into one road signal After 180-degree phase-shift processing, two branches of radio frequency signals are generated; the two branches of radio frequency signals are sent to power amplifier 1 and power amplifier 2 respectively, and power amplifier 1 and power amplifier 2 use the drain modulation effect of the power ampli...

Embodiment 3

[0067] As another preferred embodiment of the present application, refer to the attached Figure 1-8 , this example discloses:

[0068] A radio frequency front-end spreading and despreading processing method based on the amplifier drain modulation effect, characterized in that: it includes a radio frequency front-end spreading processing method and a radio frequency front-end despreading processing method;

[0069] The RF front-end spread spectrum processing method specifically refers to: the input RF signal is input into the power divider, and the power divider divides the input RF signal into equal power, and through the phase shifter, divides the equal power into one road signal After 180-degree phase-shift processing, two branches of radio frequency signals are generated; the two branches of radio frequency signals are sent to power amplifier 1 and power amplifier 2 respectively, and power amplifier 1 and power amplifier 2 use the drain modulation effect of the power ampli...

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Abstract

The invention discloses a radio frequency front-end spread spectrum and despread prescription method based on an amplifier drain electrode modulation effect, and relates to the technical field of wireless communication. The method comprises: performing power division on an input radio frequency signal; performing 180-degree phase shift on one path of signal; generating two branch radio frequency signals, the two branch radio frequency signals are respectively transmitted to the two power amplifiers or the two low noise amplifiers. By means of the drain electrode modulation effect, multiplyingof each branch radio frequency spread spectrum signal and a drain electrode power supply signal of a power amplifier or a low-noise amplifier corresponding to the branch is achieved, spread spectrum or despread processing is completed, and the spread spectrum and despread method can achieve the radio frequency front-end spread spectrum and despread function which is free of insertion loss and canflexibly configure a spread spectrum code.

Description

technical field [0001] The present invention relates to the field of wireless communication technology, more specifically to the spread spectrum modulation and demodulation method of wireless communication direct sequence spread spectrum technology, especially to a radio frequency front-end spread spectrum and despread processing method based on the method device drain modulation effect . Background technique [0002] Spread spectrum communication technology has good anti-interference performance, and has multiple access, security, anti-multipath and other capabilities, so it is widely used in military and civilian wireless communication fields. Direct Sequence Spread Spectrum (DS) is a typical spread spectrum modulation method, which spreads the information to be sent to a wider frequency band with a pseudo-random (PN) sequence, and uses the same pseudo-random sequence at the receiving end to The signal is correlated to recover the original information. At present, the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04H04B1/707H04B1/709
CPCH04B1/04H04B1/707H04B1/709H04B2001/0408H04B2001/0491
Inventor 曹韬马建平马鑫冰刘友江
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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