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Liquid antenna with reconfigurable directional diagram

A pattern, liquid technology, applied in the direction of antenna, antenna parts, antenna grounding device, etc., to achieve high gain and achieve reconfigurable effect

Active Publication Date: 2019-08-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional metal antennas are difficult to meet the various requirements of the system. Therefore, research on new antennas that overcome the shortcomings of traditional antennas is particularly urgent.

Method used

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  • Liquid antenna with reconfigurable directional diagram
  • Liquid antenna with reconfigurable directional diagram
  • Liquid antenna with reconfigurable directional diagram

Examples

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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with the accompanying drawings.

[0025] Such as Figure 1-3 As shown, a liquid antenna with pattern reconfigurable includes: a ground plate 1 ; a liquid monopole 2 fixed on the ground plate 1 , a liquid reflection surface 3 , and a feed structure 6 passing through the ground plate 1 .

[0026] In this example, the grounding plate 1 is a circular metal aluminum plate with a radius of 300 mm and a thickness of 2 mm. The liquid monopole 2 includes a transparent cylindrical container and an aqueous solution, the aqueous solution being saturated brine; the outer diameter of the transparent cylindrical liquid container is 25 mm, the height is 130 mm, and the thickness is 2 mm. The liquid reflection surface 3 includes a transparent hollow circular cylindrical container and an aqueous solution, the aqueous solution is saturated brine; the internal diameter of the circular cylindrical container is 215 mm, the...

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Abstract

The invention discloses a liquid antenna with a reconfigurable directional diagram. The liquid antenna comprises a liquid monopole, a liquid reflecting surface, a grounding plate and a feed structure.The feed structure of the antenna is realized by adopting a coaxial probe with a metal disc loaded at the top end. Each of the liquid monopole and the liquid reflecting surface is composed of a transparent liquid container and saturated salt water. The directional diagram of the antenna can be reconstructed by injecting saline water into a specific position of the liquid reflecting surface to form different liquid reflecting surfaces. According to the invention, the transparency, the liquid property and the fluidity of water are utilized, so that directional diagram reconfiguration of the antenna can be achieved, and the total efficiency of the antenna can reach 60% or more in a working frequency band.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a reconfigurable liquid antenna. Background technique [0002] With the extensive application of wireless communication systems, antennas, as an important part of wireless communication systems, have been highly valued by people. Traditional metal antennas are difficult to meet various requirements of the system. Therefore, research on new antennas that overcome the shortcomings of traditional antennas is particularly urgent. As a new type of antenna, liquid antenna has received extensive attention due to its low cost and strong reconfigurability. Liquid antennas mainly include pure water antennas, saline antennas or other organic and inorganic liquid antennas, which have the advantages of transparency, easy acquisition, good fluidity, flexible design, small radar scattering cross section, and easy reconfiguration. Contents of the invention [0003] Purpose of the invention:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q3/01H01Q15/14
CPCH01Q1/364H01Q1/48H01Q3/01H01Q15/148
Inventor 邢蕾朱佳佳徐千
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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