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Title:
SIGNAL INTERFERENCE CIRCUIT AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/184186
Kind Code:
A1
Abstract:
Provided are a signal interference circuit and device, used for interfering with the remote control signal of an unmanned aerial vehicle; a signal interference circuit (200) comprises a sawtooth-wave generator circuit (1), a noise circuit (2), a level-shifting circuit (3), a VCO module (4), a power amplifier circuit (5), and an antenna (6); the noise circuit is used for generating a narrowband noise; the output terminal of the sawtooth-wave generator circuit and the output terminal of the noise circuit are each connected to the input terminal of the level-shifting circuit; the level-shifting circuit is used for overlaying the narrowband noise onto the sawtooth wave signal and outputting the sawtooth wave signal having the noise overlaid thereon to the VCO module; the VCO module converts into a frequency-sweeping signal the sawtooth wave signal having the noise overlaid thereon, and passes the frequency-sweeping signal through the power amplifier circuit and sends the signal to the antenna. Interference is caused to the remote-control signal of an unmanned aerial vehicle by means of generating a frequency-sweeping signal of which the noise is modulated according to linear changes of time; interference effectiveness is higher and interference performance is improved.

Inventors:
CHEN, Tao (6F Hkust Sz Ier BLdg, No. 9 Yuexing 1st Rd. Hi-Tech Park , Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
DENG, Renqin (6F Hkust Sz Ier BLdg, No. 9 Yuexing 1st Rd. Hi-Tech Park , Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
YI, Mingguo (6F Hkust Sz Ier BLdg, No. 9 Yuexing 1st Rd. Hi-Tech Park , Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
Application Number:
CN2017/079662
Publication Date:
October 11, 2018
Filing Date:
April 07, 2017
Export Citation:
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Assignee:
SZ DJI TECHNOLOGY CO., LTD. (6F Hkust Sz Ier BLdg, No. 9 Yuexing 1st Rd. Hi-Tech Park , Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
International Classes:
H04K3/00
Foreign References:
CN105680981A2016-06-15
CN205430267U2016-08-03
CN106130686A2016-11-16
CN204993363U2016-01-20
CN105099585A2015-11-25
US20100048154A12010-02-25
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (Room 409, B block of Jiahua BuildingNo. 9 Shangdi, 3rd Street, Haidian District, Beijing 5, 100085, CN)
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