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Satellite communication system and/or navigation system antenna

A satellite communication system and navigation system technology, applied in antennas, antenna couplings, antenna components, etc., can solve problems such as poor antenna performance, improve performance, improve axial ratio and radiation pattern, and suppress cross-polarization components Effect

Active Publication Date: 2021-01-08
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a satellite communication system and / or navigation system antenna, which is used to solve the problem of the satellite communication system and / or navigation system antenna in the prior art being applied to narrow and / or or poor antenna performance in irregular environments

Method used

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  • Satellite communication system and/or navigation system antenna
  • Satellite communication system and/or navigation system antenna
  • Satellite communication system and/or navigation system antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Application of car dashboard box antenna system.

[0137] In this embodiment, the antenna system at the position of the control box in the dashboard of an automobile is taken as an example to illustrate the design of the satellite communication system and / or navigation system antenna of the present invention. The appearance structure of the antenna system is as follows Figure 14 As shown, the size is 95mm*90mm*20mm, because its size and shape are similar to a small box, so we call it a box antenna system 25, including an upper box antenna shell 26, a bottom box antenna metal base 27 and a box antenna enclosed in both Internal antenna system. After removing the box antenna shell 26 on the upper part, its internal space is as follows: Figure 15 As shown (in order to clearly show the placement area of ​​the satellite communication system antenna, Figure 15 The satellite communication system antenna is not provided in the box), and the box antenna system 25 includes t...

Embodiment 2

[0157] In addition to the space of the central control instrument panel in Embodiment 1, the built-in antenna system can also be placed in other spatial positions in the car, such as the A-pillar of the car, the recessed space where the roof of the car is connected with the rearview mirror (such as Figure 36 shown) etc. With the strengthening of the car's streamlined appearance, the spaces of the above connection parts are often not standard horizontal and vertical, but have complex structures such as curved and inclined. In this example, we use Figure 36 As shown in the recessed space 30 at the junction of the roof of the car and the rearview mirror, a 150mm*50mm platform (such as Figure 37 shown) to place the GNSS antenna (i.e. the system antenna 12), two LTE antennas 24 and other antennas. We can verify through the simulation in the whole vehicle that in the inclined and narrow space of this embodiment, the GNSS antenna design of this embodiment still has great advanta...

Embodiment 3

[0166] This embodiment is basically the same as Embodiment 1, except that the metal diaphragm 18 in this embodiment is configured to be composed of three sub-metal diaphragms 23, wherein the sub-metal diaphragms 23 on both sides are arranged in a planar structure, and the middle sub-metal diaphragm The sheet 23 is arranged as a three-dimensional folded structure, and a second feed point 22 is set at the appropriate position of the two sub-metal diaphragms 23 on both sides, so that the two sub-metal diaphragms can be fed through the second feed point 22 The diaphragm 23 is formed as two MIMO Wi-Fi antennas, and at the same time, the three sub-metal diaphragms 23 serve as the metal diaphragm 18 to improve the GNSS antenna, thereby improving the integration and space utilization of the box antenna system 25 .

[0167] On the basis of the position and size of the metal shrapnel in Embodiment 1, the present embodiment carries out the following steps on the metal shrapnel: Figure 4...

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Abstract

The invention provides a satellite communication system and / or navigation system antenna. The satellite communication system and / or navigation system antenna comprises a reference ground metal plate,a system antenna, a first feeding point, and a metal diaphragm; the system antenna comprises an insulating dielectric layer and a system antenna radiator which are sequentially arranged on the upper surface of the reference ground metal plate, and the system antenna radiator is provided with a first symmetric surface and a second symmetric surface which are perpendicular to each other; the first feeding point is arranged on the system antenna radiator, and the system antenna radiator is enabled to radiate circularly polarized waves through feeding of the first feeding point; and the metal diaphragm and the system antenna are arranged at an interval, the absolute value of the included angle between the metal diaphragm and the first symmetric surface is 0-10 degrees, and at least part of thesystem antenna radiator is orthographically projected on the metal diaphragm. The antenna can effectively reduce the imbalance of the edge radiation intensity of the reference ground metal plate, weaken the coupling effect with surrounding metal substances, inhibit cross polarization components, and achieve the purpose of improving the antenna axial ratio and the radiation pattern of a satellitecommunication system and / or a navigation system.

Description

technical field [0001] The present invention relates to the technical field of antennas for satellite communication systems and / or navigation systems, in particular to an antenna for satellite communication systems and / or navigation systems used in narrow and / or irregular environments. Background technique [0002] With the popularity of automobiles and the development of technologies such as autonomous driving, satellite communication and navigation technology for automobiles are now playing an increasingly important role in our lives. GNSS (Global Navigation Satellite System) is the abbreviation of Global Navigation Satellite System, which mainly includes the Global Positioning System (Global Positioning System, GPS) of the United States, the Galileo Satellite Navigation System (Galileo Satellite Navigation System, Galileo) of Europe, and the Glona Satellite Navigation System of Russia. Sri Lanka (Global Navigation Satellite System, GLONASS) and China's Beidou satellite na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q1/52H01Q1/48H01Q1/36H01Q1/38H01Q1/32
CPCH01Q1/50H01Q1/52H01Q1/48H01Q1/36H01Q1/38H01Q1/3233
Inventor 商进杨杰钧顾宏亮
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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