Anti-interference microstrip array antenna

A technology of microstrip antenna and microstrip array, which is applied in the field of satellite navigation, can solve the problems of narrow working bandwidth of rectangular microstrip array antenna and difficulty in meeting bandwidth requirements, and achieve improved anti-interference ability, multi-processing size tolerance, and reduced difficulty and cost effects

Inactive Publication Date: 2016-02-03
OLINKSTAR CORP
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AI Technical Summary

Problems solved by technology

The working bandwidth of the rectangular microstrip array antenna is relatively narrow, which is only suitable for the modulation method of the second generation of Beidou binary phase modulation (BPSK), and it is difficult to meet the bandwidth requirements of the modulation method of binary offset carrier (BOC) used by the third generation of Beidou.

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  • Anti-interference microstrip array antenna

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Embodiment Construction

[0034] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] An anti-jamming microstrip array antenna, comprising N microstrip antenna array elements, a dielectric substrate and a metal reflective substrate, the microstrip antenna array elements are arranged on the dielectric substrate at a certain distance, and the metal reflective substrate is arranged below the dielectric substrate; The shape of the microstrip antenna array element is elliptical, which is used to radiate circularly polarized waves, and a coaxial feed point is set on the microstrip antenna array element, which is used to feed in electromagnetic wave signals.

[0036] Such as figure 1Shown is a schematic diagram of the structure of the anti-jamming microstrip array antenna element of the present invention. It includes a metal radiating plate 4, a dielectric substrate 3 and a metal reflective base plate 1; the metal radiating pla...

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Abstract

The invention brings forward an anti-interference microstrip array antenna, and is especially applied to a Beidou third-generation satellite navigation system. The anti-interference microstrip array antenna employs elliptical microstrip antenna array elements so as to enable mutual coupling between the array elements to be quite low and effectively improve the anti-interference capability of the array antenna. Compared to a conventional rectangular microstrip array antenna, the bandwidth of the anti-interference microstrip array antenna is improved by more than one time, and the requirement of a Beidou third-generation BOC modulation mode can be completely satisfied. The anti-interference microstrip array antenna comprises the N microstrip antenna array elements, a medium substrate and a metal reflection base plate, wherein the microstrip antenna array elements are arranged at the upper surface of the medium substrate according to certain intervals, and the metal reflection base plate is arranged at the lower surface of the medium substrate; and the microstrip antenna array elements are elliptically-shaped for radiating circular polarized waves, and the microstrip antenna array elements are provided with a coaxial feed point for feeding into electromagnetic wave signals.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and in particular relates to an anti-jamming microstrip array antenna, which is suitable for the Beidou satellite navigation system, and also for various systems including the GPS system of the United States, the Galileo system of Europe, and the GLONASS system of Russia. navigation satellite system. Background technique [0002] China's Beidou satellite navigation system is the third mature global satellite positioning and communication system after the US GPS and Russia's GLONASS. The system consists of a space terminal, a ground terminal and a user terminal. It can provide high-precision, high-reliability positioning, navigation, and timing services for various users around the world. It also has short message communication capabilities and can be used in navigation, aviation, and surveying. Surveying and mapping, precision positioning and other civil and industrial fields. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/08H01Q21/00
Inventor 不公告发明人
Owner OLINKSTAR CORP
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