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A satellite positioning antenna device

An antenna device and microstrip antenna technology, which is applied in antenna coupling, resonant antenna, antenna unit combination with different polarization directions, etc., can solve the problems of poor antenna isolation and achieve high gain at low elevation angles and high transceiver isolation , good effect of circular polarization axis ratio

Inactive Publication Date: 2016-06-29
HARXON CORP
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Problems solved by technology

[0006] The transmitting frequency band of the Beidou system is 1615.68MHz, and the adjacent receiving frequency bands are 1268.52MH and 1561.098MHz. When designing the microstrip antenna, a high-frequency board material with a dielectric constant of not 1 (generally greater than 2) is used, which makes the microstrip antenna Radiation patches with antennas have little difference in size, and mutual coupling results in poor isolation between antennas. In actual use, the isolation between transceiver ports is often required to reach a certain standard. Therefore, how to improve the transceiver isolation of antennas is also a A major difficulty in design

Method used

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  • A satellite positioning antenna device
  • A satellite positioning antenna device
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Embodiment Construction

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In the embodiments of the present invention, "above", "below", "upper layer", "middle layer" and "lower layer" represent relative positions, not absolute positions. "Connection" can be direct connection or indirect connection. The radiation patch is a thin metal with geometrically symmetrical drawings, which is covered on the high-frequency board. Its shape includes circle, square, polygon, etc. The function of the radiation patch is to radiate electromagnetic waves to the outside. The function of the phase-shifted feed network is a power divide...

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Abstract

The invention relates to an antenna technology, and provides a satellite positioning antenna device. Therefore, the requirements of low elevation gain, a good circular polarization axial ratio and high receiving and dispatching isolation are met. The satellite positioning antenna device comprises an upper layer microstrip antenna, an interlayer microstrip antenna, a lower layer microstrip antenna and a PCB, wherein a phase shifting feed network is arranged on the back side of the PCB. A feed probe of the lower layer microstrip antenna, a feed probe of the interlayer microstrip antenna and a coaxial cable fed by the upper layer microstrip antenna are connected with the feed network, a first plated-through hole is formed in the center of the lower layer microstrip antenna, a second plated-through hole is formed in the center of the interlayer microstrip antenna, and the feed probe of the interlayer microstrip antenna is provided with a third plated-through hole in the lower layer microstrip antenna. A dielectric plate of the upper layer microstrip antenna, a dielectric plate of the interlayer microstrip antenna and a dielectric plate of the lower layer microstrip antenna are consistent in diameter and size and different in dielectric constant.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a satellite positioning antenna device. Background technique [0002] In recent years, satellite navigation, positioning and communication systems have been more and more widely used in military and civilian fields, and have played an increasingly important role, such as GPS in the United States, GLONASS in Russia, and Beidou system in my country. The Beidou system independently developed by my country was officially opened on June 1, 2003, marking that my country already has a completely independent satellite navigation system. The Beidou vehicle-mounted antenna device is one of the key components of the Beidou terminal positioning and communication system, which has a very important impact on the performance of the system. As the large-scale application of Beidou navigation and positioning enters a substantive stage, a large number of satellite positioning platforms are requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q9/04H01Q21/24H01Q1/52
Inventor 王春华邹天云黄毅
Owner HARXON CORP
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