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GNSS multi-frequency satellite navigation antenna

A technology of satellite navigation antenna and cone platform, which is applied in the field of antenna, can solve the problems of low gain and narrow operating frequency band of navigation antenna, and achieve the effects of reducing occupied space, reducing procurement and operating costs, and reducing noise interference

Inactive Publication Date: 2014-01-01
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of narrow operating frequency band and low gain of existing navigation antennas, and provide a dual-arm gradient, high-gain dual-band conical four-arm helical antenna, which can meet the needs of GNSS high-precision navigation

Method used

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  • GNSS multi-frequency satellite navigation antenna
  • GNSS multi-frequency satellite navigation antenna
  • GNSS multi-frequency satellite navigation antenna

Examples

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Effect test

example

[0053] The spiral arms are made of a well-conducting metal, such as aluminum or copper, printed on a thin, flexible medium of epoxy material, and then wrapped onto the surface of the frustum.

[0054] Use a copper sheet with the same width as the first connecting body 6 to weld the spiral to the output end of the feed network. The length of the copper sheet only needs to be sufficient to weld the spiral arm and the feed network together.

[0055] The advantages of the present invention can be further illustrated by the following test results:

[0056] 1. Test content

[0057] The antenna of the above example is tested, and the test results of the antenna voltage standing wave ratio, gain, pattern, and width-angle-to-axis ratio are given.

[0058] 2. Test results

[0059] Figure 5 It is the curve of VSWR of the example antenna as a function of frequency. It can be seen from the figure that the VSWR is less than 1.5 within 1.13-1.68 GHz.

[0060] Figure 6 It is the curve ...

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Abstract

The invention discloses a GNSS multi-frequency satellite navigation antenna which mainly solves the problem that an existing four-arm helical antenna is narrow in working frequency band and low in gain. The GNSS multi-frequency satellite navigation antenna comprises a frustum, a flexible medium covering the surface of the frustum, a mixed radiation arm printed on the surface of the flexible medium, a connector and a medium plate connected to the bottom of the frustum. A lower layer of the medium plate is provided with a power divider, an upper layer of the medium plate is provided with a radiation floor formed by a metal layer, and a radiator is connected with the power divider through a second connector. The antenna comprises all frequency bands (1.16-1.28GHz and 1.55-1.61GHz) of a GNSS, the number of global navigation satellite antennas can be reduced, and operator's purchase cost is reduced; the antenna simultaneously has the advantages that the frequency band is larger than 5.4dB, signal strength in the same direction and at the same distance can still be kept while power of a transmitter can be reduced, navigation precision is improved, noise jamming near the horizontal plane is reduced, and operation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a high-gain GNSS (Global Navigation Satellite System, Global Navigation Satellite System) antenna, which is suitable for high-precision global navigation satellite system applications on small and medium-sized satellites or small and medium-sized working platforms. Background technique [0002] Satellite navigation is a navigation method that is widely used today and plays an important role in both military and civilian fields. At present, various countries or regions are devoting themselves to the research of satellite navigation systems with independent intellectual property rights. With the development of various navigation systems, the process of multi-system coexistence and multi-mode compatibility is further accelerated. The traditional single system era (GPS system era) is changing into the GNSS era where various navigation systems are compatible and coexist. ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50
Inventor 雷娟宁佰权陈曦樊芳芳傅光
Owner XIDIAN UNIV
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