Satellite-navigation anti-interference microstrip array antenna

Abstract

A satellite-navigation anti-interference microstrip array antenna provided in the invention adopts triangular Y-shaped slot microstrip array elements. By using the antenna, miniaturization of the antenna array can be realized, cross coupling among array elements is effectively overcome and an anti-interference capability is increased. The antenna comprises N microstrip antenna array elements, a medium substrate and a metal reflection base plate. The microstrip antenna array elements are arranged on an upper surface of the medium substrate according to a certain interval. The metal reflection base plate is arranged on a lower surface of the medium substrate. Each microstrip antenna array element comprises a triangle metal radiant panel. The triangle metal radiant panel is provided with a Y-shaped slot. The Y-shaped slot comprises three bar-type slotting. Initiating terminals of the three bar-type slotting are intersected and converged and tail terminals are pointed to three edges of a triangle respectively. The triangular Y-shaped slot microstrip array elements are used for controlling flowing of a surface current and radiating a circular polarized wave. An edge of each bar-type slotting of the Y-shaped slot is provided with a coaxial feed point used for feeding in an electromagnetic wave signal.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and particularly relates to a satellite navigation anti-jamming microstrip array antenna. It is applicable to various navigation satellite systems including the GPS system of the United States, the Galileo system of Europe, the GLONASS system of Russia, and the Beidou system of China. Background technique [0002] China's Beidou satellite navigation system is developed by my country itself, and it 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 and high-reliability positioning, navigation, and timing services for all types of users around the world and around the clock. It also has short-message communication capabilities and can be applied to Navigation, aviation, surveying and mapping, precision positioning a...

AI Technical Summary

Problems solved by technology

Since the working principle of the rectangular microstrip antenna is mainly radiated by the edge of the microstrip, the array composed of the rectangular microstrip antenna is used. The mutual coupling between the array elements is relatively strong, which is greatly affected by the installation environment of the antenna array elements. In terms of the miniaturization design of the array antenna subject to many restrictions

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