A dual- frequency circularly polarized Beidou antenna with wide-axis-ratio beams

A circular polarization and axial ratio technology, applied in the field of antennas, can solve the problems of increasing the thickness of the dielectric plate, increasing the processing cost of the Beidou satellite navigation antenna, and increasing the profile of the Beidou satellite navigation antenna, so as to increase the beam width and simplify the feeding. , the effect of reducing costs

Pending Publication Date: 2019-01-15
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

At present, most of the Beidou antennas on the market use ceramic materials with high dielectric constant as the dielectric substrate material, which will increase the thickness of the dielectric plate, make the profile of the Beidou satellite navigation antenna higher, and also increase the size of the Beidou satellite navigation antenna. processing cost

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  • A dual- frequency circularly polarized Beidou antenna with wide-axis-ratio beams
  • A dual- frequency circularly polarized Beidou antenna with wide-axis-ratio beams
  • A dual- frequency circularly polarized Beidou antenna with wide-axis-ratio beams

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Embodiment

[0032] Such as figure 1 As shown, a dual-frequency circularly polarized Beidou antenna with a wide axial ratio beam is specifically composed of an upper dielectric substrate 1, a lower dielectric substrate 2, an upper metal patch 3, a lower metal patch 4, a metal ground 5, and a feeding probe 6 composition. The upper dielectric substrate 1 is a square substrate with a specific size of 58mm×58mm and a height of h 2 1.6mm, the lower dielectric substrate 2 is a circular substrate with a radius of 60mm and a height of h 1 The upper and lower dielectric substrates are stacked up and down, and the center point is on a vertical line. The upper and lower metal patches are respectively coated on the upper and lower surfaces of the upper dielectric substrate, and the metal ground is located on the lower layer. the lower surface of the dielectric substrate.

[0033] Such as figure 2 As shown, a rectangular slit 7, two C-shaped branches 8 and two rectangular slits 9 are loaded on the...

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Abstract

The invention discloses a dual-frequency circularly polarized Beidou antenna with wide-axis ratio beam, comprises an upper layer dielectric substrate and a lower layer dielectric substrate, The upperand lower surfaces of the upper dielectric substrate are respectively provided with an upper metal patch and a lower metal patch, the lower surface of the lower dielectric substrate is provided with ametal ground, the upper metal patch is loaded with a rectangular gap, a C-shaped branch and a rectangular branch, and the lower metal patch is loaded with two rectangular gaps and two isosceles triangular tangent angles. On the basis of the dual-frequency circular polarization characteristic, the invention has the advantages of wide axis ratio beam, low cost and easy machining, and can be well applied to the Beidou satellite navigation terminal equipment.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a dual-frequency circularly polarized Beidou antenna with wide-axis ratio beams. Background technique [0002] With the development of satellite communication, the global satellite positioning and communication system is widely used in various fields due to its advantages of wide coverage, high positioning accuracy and fast response speed. At present, the existing global satellite navigation and positioning systems mainly include the GPS of the United States, GALILEO of the European Union, GLONASS of Russia and the Beidou satellite navigation system independently developed by China. The establishment of the Beidou satellite navigation system has changed the long-term lack of real-time positioning means in my country and broke the monopoly of Russia and the United States in this field. It is of great significance to improve the modernization of national defense in our country. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/38H01Q1/48H01Q1/50
Inventor 刘雄英杨洪财范艺
Owner SOUTH CHINA UNIV OF TECH
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