Liquid metal spiral antenna

A helical antenna and liquid metal technology, applied in the field of antennas, can solve the problems of narrow axial ratio bandwidth, limited development of antenna reconfigurability, inconvenient transportation and portability, etc., and achieve good impedance matching, ideal circular polarization performance, and tuning methods. Simple and reliable effects

Inactive Publication Date: 2015-01-21
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Antennas are components used to transmit or receive electromagnetic waves in radio equipment, and are widely used in engineering systems such as radio communications, broadcasting, television, radar, navigation, and remote sensing. Antennas in the prior art are usually made of solid metal conductors such as copper , transportation and portability are inconvenient, the axial ratio bandwidth is relatively narrow, and the development of antenna reconfigurability is limited

Method used

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  • Liquid metal spiral antenna
  • Liquid metal spiral antenna
  • Liquid metal spiral antenna

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Embodiment Construction

[0019] like figure 1 A liquid metal helical antenna is shown, and the liquid metal helical antenna includes: a dielectric support body 1, a helical radiator 2, a feeding matching body 3, a ground plate 4 and a radio frequency coaxial connector 5; the dielectric support body 1 It is a truncated cone structure arranged on the ground plate 4; the feeding matching body 3 is attached to the lower part of the outer wall of the dielectric support body 1; the radio frequency coaxial connector 5 includes an outer conductor 51 and an inner conductor arranged coaxially. Conductor 52; the outer conductor 51 is connected to the ground plate 4; the inner conductor 52 is connected to the feeding matching body 3; the spiral radiator 2 includes a variable lift angle spiral tube 21 and is housed in the spiral tube Liquid metal 22 in 21; the initial end of the helical tube 21 is attached to the feeding matching body 3, and spirally surrounds the outer wall of the dielectric support body 1 to for...

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Abstract

The invention discloses a liquid metal spiral antenna. The liquid metal spiral antenna is characterized by comprising a medium support body, a spiral radiation body, a feed matching body, a grounded panel and a radio frequency coaxial connector, wherein the medium support body is of a conical frustum structure arranged on the grounded panel, the feed matching body is attached to the lower portion of the outer wall of the medium support body, the radio frequency coaxial connector comprises an outer conductor and an inner conductor, the outer conductor and the inner conductor are arranged coaxially, the outer conductor is connected with the grounded panel, the inner conductor is connected with the feed matching body, the spiral radiation body comprises a lead-angle-variable spiral tube and liquid metal contained in the spiral tube, and the initial end of the spiral tube is attached to the feed matching body and wound spirally along the outer wall of the medium support body to form a cone. The spiral antenna is made reconfigurable, and the bandwidth of the liquid metal spiral antenna is larger than that of a solid metal antenna of the same structure and size.

Description

technical field [0001] The invention relates to an antenna, in particular to a liquid metal helical antenna. Background technique [0002] Antennas are components used to transmit or receive electromagnetic waves in radio equipment, and are widely used in engineering systems such as radio communications, broadcasting, television, radar, navigation, and remote sensing. Antennas in the prior art are usually made of solid metal conductors such as copper , transportation and portability are inconvenient, the axial ratio bandwidth is relatively narrow, and the development of antenna reconfigurability is limited. In recent years, with the rapid development of radar and communication systems, more and more antennas need to be mounted on carriers such as satellites, ships, and aircraft. At the same time, with the increase in the density of mounted antennas, the electromagnetic coupling interference between antennas has become serious. , and even affect the normal operation of the a...

Claims

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Application Information

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IPC IPC(8): H01Q1/36
Inventor 周芸房少军傅世强刘宏梅王钟葆
Owner DALIAN MARITIME UNIVERSITY
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