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Broadband wide-axial-ratio beam cross dipole antenna

A cross-dipole and sub-antenna technology, which is applied in the field of wide-bandwidth axial ratio beam cross-dipole antenna and integrated equipment for navigation and communication, can solve the problem that the wide-bandwidth beam characteristics of cross-dipole are rarely realized at the same time, etc. Beam width, large bandwidth, high precision effect

Active Publication Date: 2020-07-17
HARBIN ENG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

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

Method used

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  • Broadband wide-axial-ratio beam cross dipole antenna
  • Broadband wide-axial-ratio beam cross dipole antenna
  • Broadband wide-axial-ratio beam cross 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 broadband wide-axis-ratio beam cross dipole antenna. According to the antenna, the technologies such as a time sequence feed technology, a parasitic patch technology, a proximity coupling technology and the like are adopted, and the performances such as broadband wide-axis-ratio beams and the like of the cross dipole antenna can be realized. According to the antenna, the butterfly-shaped crossed dipoles are utilized to obtain wide impedance bandwidth, the metal columns are connected with the parasitic units, magnetoelectric dipole radiation is introduced, the axial ratio bandwidth of the antenna is expanded, and the axial ratio beam width of the antenna is expanded by loading the metal back cavity. The antenna is simple in structure and can be applied to navigationand communication integrated receiving equipment.

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 Applications(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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