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Multimodal satellite navigation terminal antennae with wide-band circular polarized wide wave beam

A technology for multi-mode satellites and navigation terminals, which is applied to antenna unit combinations with different polarization directions, resonant antennas, and slender active unit end feeds, etc. It is difficult to solve problems such as low elevation gain and easy peeling of copper foil, and achieve the effect of good low elevation gain, good circular polarization characteristics, and no need for debugging

Active Publication Date: 2008-10-15
SPACE STAR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the copper foil is very thin (usually 17 microns or 35 microns), the copper foil is easy to peel off under the conditions of rapid temperature fusion and a wide range of changes, resulting in damage to the antenna
Moreover, the microstrip antenna realized by the printing process is generally very thin, and it is difficult to achieve a good low elevation gain
[0006] In summary, there are no relevant literature reports on broadband multi-mode navigation terminal antennas that can simultaneously receive multiple modes of navigation signals

Method used

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  • Multimodal satellite navigation terminal antennae with wide-band circular polarized wide wave beam
  • Multimodal satellite navigation terminal antennae with wide-band circular polarized wide wave beam
  • Multimodal satellite navigation terminal antennae with wide-band circular polarized wide wave beam

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] Such as figure 1 , 2 As shown in and 3, the wide-band circularly polarized wide-beam multi-mode satellite navigation terminal antenna of the present invention includes two parts, the envelope antenna body and the feed network.

[0026] The antenna body includes a radome and a dielectric support 1 , a metal radiation patch 2 , an L-shaped metal feeding probe 3 and a metal reflector 4 . In this embodiment, the radome and the dielectric support 1 are designed in an integrated manner, and both are made of the same dielectric material. The dielectric material is mainly concerned with the environmental requirements of its work, such as ambient temperature, vibration requirements, etc., the most important thing is its electrical parameter relative permittivity ε r , the selection range is 1r r = 3.15.

[0027] By drilling a hole inside the medium support 1, the vertical...

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Abstract

The invention discloses a multimode satellite navigation terminal antenna with broadband and circular polarization wide-beam, which is applied in places with higher demands on the properties of the broadband and the circular polarization. The multimode satellite navigation terminal antenna is composed of an antenna body and a feed network, wherein, the antenna body consists of a radome (1), a media support, a metallic radiating patch (2), four L-shaped metallic feed probes (3) and a metallic reflecting plate (4); the feed network consists of a four-way microstrip power-dividing phase shift network (5) and a metallic shielding box; the four L-shaped metallic feed probes (3) of the antenna body are electrically connected with the microstrip power-dividing phase shift network (5) of the feed network by metals. The multimode satellite navigation terminal antenna with broadband and circular polarization wide-beam leads the relative bandwidth of the microstrip antenna to reach a point above 40 percent. Meanwhile, since the microstrip antenna with nested media is adopted, the low-elevation gain of the microstrip antenna is greatly improved. With a 5-degree elevation angle gain larger than -5dBi, the multimode satellite navigation terminal antenna with broadband and circular polarization wide-beam is also provided with excellent mechanical characteristics and temperature characteristics.

Description

technical field [0001] The invention relates to antenna technology in the field of wireless communication, in particular to occasions such as multi-mode satellite navigation terminals and the like that have high requirements on broadband characteristics and circular polarization characteristics. Background technique [0002] Usually satellite navigation antenna terminal (user) antennas are single-frequency, dual-frequency or triple-frequency, and they are all aimed at a single satellite navigation system, such as foreign GPS, GLONASS, GALILEO and my country's Beidou-1 and Beidou-2. The disadvantage of this type of antenna is that it cannot receive all navigation signals at the same time, and cannot meet the needs of multi-mode navigation reception. However, in practical applications, users need to select one or more navigation signals of the above-mentioned different satellite navigation systems according to actual needs, and need a broadband multi-mode navigation terminal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q21/26H01Q9/30
Inventor 董涛葛琳李景贵
Owner SPACE STAR TECH CO LTD
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