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Signal interference antenna device

An antenna equipment and signal interference technology, applied in the field of signals and systems, can solve the problems of narrow bandwidth, large volume, and high production cost of antenna equipment, and achieve the effects of omnidirectional beam radiation, good concealment, and increased bandwidth

Inactive Publication Date: 2013-07-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing interference antenna devices generally use whip antennas, disk monopole antennas, and printed flat panel antennas to achieve interference with cheating signals. Shaped design to make jamming antenna equipment concealed

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 As shown, the signal interference antenna device includes a cylindrical box body 1 with a built-in radio frequency circuit board, a normal phantom helical antenna 2, a planar equiangular helical antenna 3, and a broadband magnetic ring balun 4; wherein, the radio frequency circuit board is suspended in the cylindrical box Inside the body 1, the normal phantom helical antenna 2 spirally surrounds the inner wall of the box body 1, including the joint A at the top of the box and the joint B at the bottom of the box; On the inner wall of the top of the body 1, including the central joint C and the outer joint D connected with the joint A; the broadband magnetic ring balun 4 is fixed on the radio frequency circuit board in the box body 1, which is wound on a high-frequency double-wire transmission line 6 Hole magnetic ring 5 is made,...

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Abstract

The invention provides a signal interference antenna device, comprising a columnar box with a built-in RF (radio frequency) circuit board, a normal motif helical antenna, a planar equiangular helical antenna and a broadband magnetic ring balun, wherein the normal motif helical antenna circles around the periphery of an inner wall of the box helically and comprises a joint A at the top of the box and a joint B at the bottom of the box; the planar equiangular helical antenna is wound around an inner wall at the top of the box at intervals and comprises a central joint C and an outside joint D connected with the joint A; the broadband magnetic ring balun is fixed on the RF circuit board in the box and manufactured by winding a two-wire transmission line on a high-frequency two-hole magnetic ring; and one joint of each transmission line in the two-wire transmission line is connected to an RF output end of the RF circuit board by a same coaxial line SMA (small A type) joint, the other joint of a first transmission line is connected with the central joint C and the other end of a second transmission line is grounded. The signal interference antenna device has the wider bandwidth and canrealize all-around beam radiation in a wide band.

Description

technical field [0001] The present invention relates to a signal jamming antenna device, in particular to a signal jamming antenna device working in VHF (Very High Frequency, VHF) and Ultra High Frequency (UHF) bands, belonging to the technical field of signals and systems . Background technique [0002] At present, the phenomenon of cheating by means of information technology is becoming more and more prominent. For example, it has become a common cheating phenomenon to use small wireless communication devices to communicate with the outside world during the examination process. In order to maintain the fairness of the examination, it is particularly important to use signal interference equipment to prevent the above-mentioned cheating phenomenon. Existing interference antenna devices generally use whip antennas, disk monopole antennas, and printed flat panel antennas to achieve interference with cheating signals. The shape is designed to make the interference antenna dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/14H01Q7/00H01Q21/29
Inventor 刘埇赵国强徐海涛陈宁郑超
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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