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A multi-band antenna

A multi-band antenna and antenna technology is applied in the field of satellite positioning and navigation antennas to achieve the effect of good circular polarization axis ratio and wide circular polarization beam width

Inactive Publication Date: 2016-07-06
ZHENJIANG ZHONGAN COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the stacked placement method is generally used, but it is difficult for the combined navigation antennas to cover more navigation frequency bands with fewer antennas, and at the same time ensure that each frequency point has good performance, including low axial ratio, symmetric pattern, relatively Wide beamwidth, high low elevation gain and wide circularly polarized beamwidth

Method used

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  • A multi-band antenna
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Embodiment Construction

[0038] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail:

[0039] The present invention mainly consists of three microstrip antennas and an insulating cylinder 5 . figure 1 For the structural representation of the present invention, see figure 1 , the lower layer microstrip antenna 1, the middle layer microstrip antenna 2 and the upper layer microstrip antenna 3 are stacked sequentially from bottom to top, and at the same time, the insulating tube 5 partially surrounds the microstrip antenna. The three microstrip antennas work in three different frequency bands respectively.

[0040] In a more optimal embodiment, the present invention also has a first metal patch 4, the first metal patch 4 is evenly arranged on the upper surface of the insulating cylinder 5, and each microstrip antenna (1, 2, 3) is stacked in sequence, The metal patch (9, 11, 14) of each microstrip antenna (1, 2, 3) is surrounded by the insu...

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Abstract

The invention discloses a multiband antenna, and relates to satellite positioning and navigation antennas. The multiband antenna comprises multiple microstrip antennas with different frequency bands and further comprises an insulating cylinder (5), all the microstrip antennas are overlaid in sequence, and metal patches (9,11,14) of all the microstrip antennas are wrapped by the insulating cylinder (5) in the horizontal direction. The multiband antenna has the advantages of being wide in beam width, high in low elevation gain, good in circular polarization performance and symmetrical in directional diagram.

Description

technical field [0001] The invention relates to a satellite positioning and navigation antenna, in particular to a multi-frequency band antenna. Background technique [0002] GPS is the Global Positioning System, which uses positioning satellites to provide navigation services for the world. The main operating frequencies of GPS satellite signals are L1: 1575.42MHZ, L2: 1228MHz, among which L1 is an open civil signal, the signal is circularly polarized, and the signal strength is about -166dBm, which is a relatively weak signal. [0003] The Beidou satellite navigation system is a global satellite navigation system independently developed and operated independently by China. The Beidou generation uses the "active positioning" method. The uplink L-band: 1610-1626.5MHz is used for transmission, using left-handed circular polarization; the downlink S-band 2483.5-2500MHz is used for reception, using right-handed circular polarization. The Beidou second-generation system uses t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/30H01Q1/38H01Q1/48H01Q1/50H01Q13/08H01Q1/12
Inventor 谈田爽夏雨龙朱旗
Owner ZHENJIANG ZHONGAN COMM TECH
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