Broadband, high-gain and double-slot Vivaldi antenna

A high-gain, antenna technology, applied in antennas, slot antennas, radiating element structures, etc., can solve the problems that cannot meet the broadband requirements of Vivaldi antennas, unfavorable gradient slot antenna modeling design, etc., to improve the beam splitting phenomenon and structure Simple, effective effect

Inactive Publication Date: 2016-05-11
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, zero-refractive-index metamaterials are all narrow-band structures, which can only improve the gain of Vivaldi antennas in a narrow frequency band, and cannot meet the broadband requirements of Vivaldi antennas.
In addition, using traditional rectangular slots to corrugate the edge of the Vivaldi antenna requires rectangular slots of different lengths to fully process the edge of the Vivaldi antenna, which is not conducive to the modeling design of the gradient slot antenna

Method used

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  • Broadband, high-gain and double-slot Vivaldi antenna
  • Broadband, high-gain and double-slot Vivaldi antenna
  • Broadband, high-gain and double-slot Vivaldi antenna

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Embodiment Construction

[0036] As shown in Fig. 1, the embodiment of the present invention provides a kind of broadband high-gain dual-slot Vivaldi antenna comprising: a dielectric plate, one side has a metal layer as the upper surface; double-slotted gradient slot lines, arranged on the upper surface of the dielectric plate, in an index The tapered horn-shaped opening; the edge corrugation is arranged on the upper surface of the dielectric board; the feed unit is arranged on the lower surface of the dielectric board to feed the gradual groove line.

[0037] The upper surface of the dielectric plate has a metal layer for conducting current; in this embodiment, the dielectric plate is a polytetrafluoroethylene glass cloth plate with a thickness of 1mm, a dielectric constant of 2.65, and a loss tangent of 0.001; The layer is a copper sheet pasted on a dielectric board, the length of the metal layer is 145mm, the width is 80mm, and the thickness is 0.018mm.

[0038] The double-groove gradient groove lin...

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Abstract

The invention discloses a broadband, high-gain and double-slot Vivaldi antenna, which comprises a dielectric plate, a double-slot tapered slot line, edge waves and a feed element, wherein one surface of the dielectric plate is provided with a metal layer as the upper surface; the double-slot tapered slot line is arranged at the upper surface of the dielectric plate and is in an exponential gradient trumpet-shaped opening; the edge waves are arranged on the upper surface of the dielectric plate; and the feed element is arranged on the lower surface of the dielectric plate and is used for feeding the tapered slot line. By the technical scheme disclosed by the invention, the radiation gain of the Vivaldi antenna within a complete working band can be improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a wide-band high-gain dual-slot Vivaldi antenna. Background technique [0002] Tapered slot antenna (TSA) is a typical surface wave end-fire antenna. It relies on the gradual groove lines etched on the dielectric plate to realize the slow wave effect, and radiates energy through the gradually opened groove lines during the transmission of electromagnetic waves. Gradient slot antenna has the advantages of good port matching, stable gain, similar width and symmetrical E-plane H-plane pattern in a wide frequency band, light weight, easy processing and integration, etc., so it is widely used in radio astronomy, Ground penetrating radar, ultra-wideband communication, ultra-wideband imaging and other fields. The slot line structure of gradient slot antenna mainly has three typical forms: Exponentially tapered slot antenna (ETSA), also known as Vivaldi antenna; linear gradient slot a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/10H01Q1/38
CPCH01Q13/10H01Q1/38H01Q13/106
Inventor 王亚伟王光明梁建刚高向军朱莉
Owner AIR FORCE UNIV PLA
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