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Linearly Polarized Tilt Angle Continuously Adjustable Circular Parasitic Patch Antenna Based on Liquid Metal

A technology of liquid metal and parasitic patch, which is applied in the direction of antenna, antenna support/mounting device, radiation element structure, etc., can solve the problems of complex control circuit, inability to realize continuous adjustment, complex feed network, etc., and achieve polarization The effect of continuously adjustable inclination angle

Active Publication Date: 2021-04-06
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this antenna can achieve polarization reconfigurable design, it can only switch between several polarization states, and cannot realize continuous adjustment of polarization
And it requires complex control circuits and more electronic devices and double-feed ports
When there are more polarization states to be realized, the feed network will be more complex

Method used

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  • Linearly Polarized Tilt Angle Continuously Adjustable Circular Parasitic Patch Antenna Based on Liquid Metal
  • Linearly Polarized Tilt Angle Continuously Adjustable Circular Parasitic Patch Antenna Based on Liquid Metal
  • Linearly Polarized Tilt Angle Continuously Adjustable Circular Parasitic Patch Antenna Based on Liquid Metal

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specific Embodiment

[0036] First, specify the working frequency of the antenna. The resonant frequency is mainly determined by the outer diameter of the parasitic patch, which is 1 / 3~1 / 2 of the free space wavelength, corresponding to the selected frequency of 5.2GHz, the outer diameter of the patch is 23mm, and the main antenna is circular. The diameter of the radiation patch is designed so that the working frequency corresponds to 1 / 8~1 / 7 of the free space wavelength, and 8mm is finally selected through optimization. The patch thickness is 0.018mm.

[0037] The insulator support structure is acrylic, with a diameter of 16mm and a height of 3mm, engraved with an annular flow channel with a width and height of 1mm, and the annular gap between the circular main radiation patch and the parasitic patch on the dielectric substrate forms a liquid metal microsphere. runner.

[0038] The length of the liquid metal strip is about 1 / 6 of the circumference of the annular microchannel, and the two sides are...

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Abstract

The invention relates to a circular parasitic patch antenna with continuously adjustable linear polarization tilt angle based on liquid metal, comprising a metal floor (1), a dielectric substrate (2), a radiation patch (3), and an insulator support structure (4 ), liquid metal microchannel (5), director (6), coaxial cable SMA connector (7), liquid metal inlet (8) and insulating liquid and conductive liquid metal strips in liquid metal microchannel (5) (9); wherein, the feeding probe can adopt a standard SMA connector or a semi-rigid coaxial cable connected by an SMA connector, and the antenna adopts a center feeding method; the radiation patch (3) consists of a circular main radiation patch (3a) It consists of an annular parasitic patch (3b), by optimizing its structural size, a better radiation mode can be excited, and then a good matching performance and radiation pattern can be obtained; the liquid metal flow channel (5) is composed of the main radiation patch (3a) It is composed of an annular gap between the parasitic patch (3b) and an insulator support structure (4); the linear polarization polarization inclination is determined by the center position of the fixed-length liquid metal strip in the liquid metal flow channel (5).

Description

technical field [0001] The invention relates to the technical field of reconfigurable antennas, in particular to a liquid metal-based circular parasitic patch antenna with continuously adjustable polarization dip angle. Background technique [0002] With the rapid development of wireless communication technology, the communication system presents multi-functional features such as multi-frequency bands and multi-polarization. The system capacity requirements are increasing, which increases the number of required antennas. Extremely unfavorable, so put forward high requirements on the antenna design. The realization of reconfigurable antenna is an effective way to solve such problems. The polarization reconfigurable antenna can change the polarization state without increasing the number of antennas, which can effectively eliminate the influence of multipath fading in the communication system, improve the performance of the communication system, and achieve the purpose of savi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/24H01Q1/38H01Q1/12
CPCH01Q1/12H01Q1/38H01Q15/24
Inventor 胥畅王正鹏武建华
Owner BEIHANG UNIV
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