Linear polarization polarized inclination angle continuous adjustable circular parasitic patch antenna based on liquid metal

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

Active Publication Date: 2018-03-02
BEIHANG UNIV
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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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  • Linear polarization polarized inclination angle continuous adjustable circular parasitic patch antenna based on liquid metal
  • Linear polarization polarized inclination angle continuous adjustable circular parasitic patch antenna based on liquid metal
  • Linear polarization polarized inclination angle continuous adjustable circular parasitic patch antenna based on liquid metal

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specific Embodiment

[0035] First clarify the working frequency of the antenna. The resonant frequency is mainly determined by the outer diameter of the parasitic patch, which is 1 / 3 to 1 / 2 of the free space wavelength, corresponding to the selected frequency of 5.2GHz, and the outer diameter of the patch is 23mm. The main radiation patch of the antenna The sheet diameter is designed to work frequency corresponding to 1 / 8 to 1 / 7 of the free space wavelength, and 8mm is finally selected through optimization. The patch thickness is 0.018mm.

[0036] The support structure of the insulator is acrylic, with a diameter of 16mm and a height of 3mm, engraved with an annular flow channel with a width and a height of 1mm, and the annular gap between the main radiation patch and the parasitic patch on the dielectric substrate forms a liquid metal microchannel .

[0037] The length of the liquid metal strip is about 1 / 6 of the circumference of the annular micro-channel, and both sides are filled with liquid insul...

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Abstract

The invention relates to a linear polarization polarized inclination angle continuous adjustable circular parasitic patch antenna based on liquid metal. The antenna comprises a metal floor (1), a medium substrate (2), a radiation patch (3), an insulator supporting structure (4), a liquid metal micro channel (5), a director (6), a coaxial cable SMA joint (7), a liquid metal inlet (8) and an insulation liquid and conductive liquid metal bar (9) in the liquid metal micro channel (5), wherein a feed probe can employ a semi-rigid coaxial cable connected with the standard SMA joint or the SMA joint,and the antenna employs a center feed method, the radiation patch (3) comprises a circular main radiation patch (3a) and an annular parasitic patch (3b), through optimizing the structure dimensions,a relatively good radiation mode can be excited, so excellent matching performance and a radiation direction diagram can be acquired; the liquid metal micro channel (5) comprises an annular slit between the circular main radiation patch (3a) and the annular parasitic patch (3b) and the insulator supporting structure; a linear polarization polarized inclination angle is dependent on the center position of the fixed-length liquid metal bar in the liquid metal micro channel (5).

Description

Technical field [0001] The present invention relates to the technical field of reconfigurable antennas, in particular to a circular parasitic patch antenna based on liquid metal with linear polarization and continuous adjustable polarization inclination. Background technique [0002] With the rapid development of wireless communication technology, the communication system presents multi-frequency bands, multi-polarization and other multi-functional characteristics. The system capacity requirements are increasing, which makes the number of required antennas increase. This affects the characteristics and cost of the system. Extremely unfavorable, so high requirements are placed on antenna design. The realization of reconfigurable antennas is an effective method to solve such problems. The polarization reconfigurable antenna can realize the change of the polarization state without increasing the number of antennas, which can effectively eliminate the influence of multipath fading o...

Claims

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Application Information

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Patent Type & Authority Applications(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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