Three-frequency circularly polarized antenna for Beidou second-generation satellite navigation system

A satellite navigation system and circularly polarized antenna technology, applied in the field of antennas, can solve the problems of increasing the volume of navigation terminal equipment, increasing the difficulty of antenna manufacturing, and complex antenna feeding structure, and achieving stable gain, good circular polarization, and antenna. Good effect of radiation characteristics

Pending Publication Date: 2019-05-10
SOUTH CHINA UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0004] Some multi-frequency Beidou antennas currently on the market adopt a multi-feed point design scheme. The feed structure of the antenna is complicated, which increases the difficulty of manufacturing the antenna. The use of the feed network will also increase the antenna profile and increase the volume of the navigation terminal equipment.

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  • Three-frequency circularly polarized antenna for Beidou second-generation satellite navigation system
  • Three-frequency circularly polarized antenna for Beidou second-generation satellite navigation system
  • Three-frequency circularly polarized antenna for Beidou second-generation satellite navigation system

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Embodiment

[0032] Such as figure 1 As shown, a three-frequency circularly polarized antenna for the Beidou second-generation satellite navigation system, which can be well applied to the Beidou second-generation satellite navigation system, includes a first dielectric substrate 1, a second dielectric substrate 2, a second dielectric substrate Three dielectric substrates 3 , a first radiating patch 4 , a second radiating patch 5 , a third radiating patch 6 , a floor 7 , a short-circuit probe 8 and a feeding probe 9 .

[0033] The antenna consists of a first dielectric substrate, a second dielectric substrate and a third dielectric substrate from top to bottom, and the three-layer dielectric substrate is arranged in a stacked manner to achieve triple-frequency circular polarization. The first radiation patch is attached to the upper surface of the first dielectric substrate, the second radiation patch is attached to the upper surface of the second dielectric substrate, the third radiation ...

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Abstract

The invention discloses a three-frequency circularly polarized antenna for a Beidou second-generation satellite navigation system, comprising a first dielectric substrate, a second dielectric substrate and a third dielectric substrate in order from top to bottom, wherein the first dielectric substrate, the second dielectric substrate and the third dielectric substrate are disposed in a stacked manner; the upper surface of the first dielectric substrate is provided with a first radiation patch, the upper surface of the second dielectric substrate is provided with a second radiation patch, the upper surface of the third dielectric substrate is provided with a third radiation patch, and the lower surface of the third dielectric substrate is provided with a floor. The invention has the advantages such as simple structure, low profile and good radiation characteristics on the basis of three-frequency circularly polarized characteristics.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a triple-frequency circularly polarized antenna used in the Beidou second-generation satellite navigation system. Background technique [0002] The Beidou satellite navigation system is a three-dimensional satellite positioning and communication system independently developed by China. Its establishment has changed the long-term lack of real-time positioning means in my country and broken the monopoly of the United States and Russia in this field. With the continuous improvement of the Beidou satellite navigation system, the positioning and communication technology based on the Beidou satellite navigation system is developing rapidly, and has been widely used in the fields of transportation, military, water conservancy, emergency rescue and disaster relief. [0003] The Beidou satellite navigation system is divided into the Beidou first-generation satellite navigation system and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q15/24H01Q5/10H01Q5/28
Inventor 刘雄英杨洪财范艺
Owner SOUTH CHINA UNIV OF TECH
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