A Wide Bandwidth Axial Ratio Beam Crossed Dipole Antenna

A cross-dipole, sub-antenna technology, applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., can solve the problem of cross-dipole wide-bandwidth beam characteristics rarely realized at the same time, etc., to expand beam width and wide bandwidth. , the effect of wide-axis ratio beamwidth

Active Publication Date: 2022-04-05
HARBIN ENG UNIV
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Problems solved by technology

The crossed dipole antenna has shown great potential in terms of broadband characteristics. Methods such as parasitic element technology and timing feeding technology can expand the bandwidth of the antenna. By adding magnetic dipoles with complementary patterns, the crossed dipole antenna is also realized. Wide beam characteristics, but the wide bandwidth beam characteristics of crossed dipoles are rarely realized at the same time

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  • A Wide Bandwidth Axial Ratio Beam Crossed Dipole Antenna
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  • A Wide Bandwidth Axial Ratio Beam Crossed Dipole Antenna

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Embodiment example

[0038] This embodiment provides a wide bandwidth axial ratio beam crossed dipole antenna with a center frequency of 1.6 GHz, and its structure is as follows figure 1 , 2 As shown, it mainly includes: a dielectric substrate 1, the substrate adopts Rogers 4350B with a dielectric constant of 3.66, and a thickness of 0.508mm. The top layer of the dielectric substrate 1 is printed with a dipole arm 2, a feeder ring line 5 and a butterfly The bottom of the parasitic unit 3 is printed with a dipole arm 2 , a feeding circular line 5 and a trapezoidal parasitic unit 4 . Metal back cavity 6, the metal back cavity is composed of five copper plates with a thickness of 1mm, wherein the size of the bottom copper plate is 150mm×150mm, and the size of the surrounding copper plates is 150mm×45mm. The bottom copper plate has holes for power feeding. The coaxial probe 8 is connected to the bottom copper plate of the metal back cavity 6 and the feed circular wire 5, and feeds the dipole arm 2 t...

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Abstract

The invention provides a crossed dipole antenna with a wide bandwidth axial ratio beam. The antenna adopts technologies such as timing feed technology, parasitic patch technology, and proximity coupling technology to realize the performance of the wide bandwidth axial ratio beam of the crossed dipole antenna. . The antenna uses butterfly crossed dipoles to obtain wide impedance bandwidth, uses metal pillars to connect with parasitic elements, introduces magnetoelectric dipole radiation, and expands the axial ratio bandwidth of the antenna. By loading the metal back cavity, the axial ratio beam width of the antenna is expanded. The antenna has a simple structure and can be applied in an integrated receiving device for navigation and communication.

Description

technical field [0001] The invention relates to a beam crossed dipole antenna with wide bandwidth and axial ratio, which can be applied to integrated navigation and communication equipment, and belongs to the technical field of antennas. Background technique [0002] With the rapid development of major satellite navigation systems, navigation terminals not only need to be able to receive the signals of major navigation systems, but also to capture the satellite signals of a single satellite navigation system as much as possible, which requires the antenna to be able to achieve broadband, wide beam and other performance . The development of integrated circuit technology provides technical support for the realization of navigation and communication integration. The integration of navigation and communication requires that the antenna bandwidth can cover the navigation and communication frequency bands, and broadband antennas are required. The crossed dipole antenna has shown...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q19/00H01Q19/02
CPCH01Q1/36H01Q1/50H01Q19/02H01Q19/005
Inventor 黄平杨光王伟王敬郭猛佟禹辰
Owner HARBIN ENG UNIV
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