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A RF Fingerprint Reconstruction Front-end Transmitting Chain Based on Cascade Phase-Locked Loop

A radio frequency fingerprint and transmission link technology, which is applied in the field of radio frequency communication, can solve the problems such as the inability to satisfy the variable radio frequency fingerprint, and achieve the effect of simple fingerprint reconstruction process, stable gain, and easy realization

Active Publication Date: 2022-07-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

This type of reconfigurable transmit front-end cannot meet the requirements of variable RF fingerprints under the condition of fixed frequency band, fixed signal transmit power and fixed gain.

Method used

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  • A RF Fingerprint Reconstruction Front-end Transmitting Chain Based on Cascade Phase-Locked Loop

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0027] When the number of series phase-locked loops is two, the structure diagram of the front-end transmission chain is as follows figure 1 shown.

[0028] A radio frequency fingerprint reconstruction front-end transmission chain based on cascaded phase-locked loops, the first stage of the reconfigurable transmission front-end is a variable gain amplifier, the input end is connected to the baseband, and the output end is connected to the mixer, For baseband signal amplification;

[0029] The second stage in the reconfigurable transmitting front end is a mixer, the radio frequency input end of which is connected to the output end of the variable gain amplifier, and the output end is connected to the input end of the sixth-stage power amplifier, and the mixer is used to convert the baseband signal mixing to high frequency signals;

[0030] The third stage at the reconfigurable transmitting front end is the phase-locked loop 2, the input end of which is connected to the output...

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Abstract

The invention provides a front-end transmission chain of radio frequency fingerprint reconstruction based on cascaded phase-locked loops, and belongs to the technical field of radio frequency communication. Several series-connected phase-locked loops are used in the transmission chain, and the RF fingerprint reconstruction at the hardware level is realized by adjusting the frequency multiplication coefficients of the multiple phase-locked loops, and at the same time, the gain of the first-stage variable gain amplifier is adjusted to offset the Due to the gain fluctuation caused by the frequency multiplication factor of the phase-locked loop in the circuit, the gain is stable; the whole fingerprint reconstruction process is simple and easy to implement, and the miniaturization of the reconfigurable radio frequency front-end equipment can be realized.

Description

technical field [0001] The invention belongs to the technical field of radio frequency communication, and in particular relates to a front-end transmission chain of radio frequency fingerprint reconstruction based on cascaded phase-locked loops. Background technique [0002] "RF fingerprinting" is a concept analogous to biometric fingerprinting, which is defined as a technology that uniquely identifies a transmitter based on the transient portion of the transmitter's transmitted signal. The reason for the generation of RF fingerprints is that in the remanufacturing process of each device, various accessories will be produced according to the specified standards, but in the production process, component tolerances will inevitably occur, resulting in certain errors with the specified standards, and this Errors are generated randomly within a certain range. When the signal passes through the device, the errors of these components will reflect on the RF signal and have some fix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/00H04B1/04
CPCH04B1/006H04B1/04H04B1/0475H04B2001/0408H04B2001/0491
Inventor 王勇马殊王振宇裴玲施德鑫刘晨阳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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