Miniaturized triple-band multilayer patch Beidou antenna

Abstract

The invention discloses a miniaturized triple-band multilayer patch Beidou antenna comprising an upper layer micro-strip antenna, an intermediate layer micro-strip antenna, a lower layer micro-strip antenna and a bottom layer feed network layer which are connected from the top to the bottom in turn in a laminating way, and cross section area of all layers of micro-strip antennas from the top to the bottom increases in turn and thickness of all layers of micro-strip antennas increases in turn. The upper layer micro-strip antenna comprises an upper layer micro-strip patch and an upper layer dielectric substrate. The intermediate layer micro-strip antenna comprises an intermediate layer micro-strip patch and an intermediate layer dielectric substrate. The lower layer micro-strip antenna comprises a lower layer micro-strip patch and a lower layer dielectric substrate. The bottom layer feed network layer comprises a metal earth plate and a bottom layer dielectric substrate. The lower end surface of the bottom layer dielectric substrate is provided with a feed network circuit board. The feed network circuit board comprises a Wilkinson power divider, a micro-strip transmission line and a feed port. The miniaturized triple-band multilayer patch Beidou antenna further comprises a center feed probe, an interlayer feed probe and a short circuit probe. The interlayer feed probe comprises an intermediate layer feed probe and a lower layer feed probe.

Description

technical field [0001] The invention relates to the technical fields of communication and navigation, in particular to a miniaturized three-frequency multi-layer patch Beidou antenna. Background technique [0002] The Beidou satellite navigation system is a global satellite positioning and communication system independently developed by my country. Together with the US GPS, Russia's GLONASS, and the EU's Galileo system, it is known as the world's four major satellite navigation systems. At present, the United Nations has recognized these four systems together as the core suppliers of the global satellite navigation system. It has changed the long-term lack of high-precision and real-time positioning means in my country, broken the monopoly position of the United States and Russia in this field, and can provide a variety of business guarantees for various military and civilian uses of land, sea, air and space in my country. In particular, it is of great significance to impro...

AI Technical Summary

Problems solved by technology

However, although the Beidou handheld product positioning technology is becoming more and more mature, there are still many problems in terms of size and portability

Hand-held Beidou navigation equipment is bulky and not easy to carry, so its miniaturization and portability are imperative

The miniaturization of the handheld will inevitably make the space for the antenna smaller and smaller. According to relevant literature, the current tri-band Beidou antenna has a large length and width, which is not convenient for integrated use with the handheld terminal.

The main reason is that it failed to make a good breakthrough in the application of high dielectric constant material microstrip antenna design, and effectively solve the contradiction between antenna miniaturization and low elevation gain and the problem of transceiver isolation

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