Beidou buoy antenna capable of improving low elevation gain

Abstract

The invention discloses a beidou buoy antenna capable of improving low elevation gai; the beidou buoy antenna is characterized by comprising an upper-layer antenna radiator, a lower-layer antenna radiator, a feed network circuit board and a frustum metal structural member, wherein the upper-layer antenna radiator, the lower-layer antenna radiator and the feed network circuit board are sequentiallyoverlapped from top to bottom and are arranged on the frustum metal structural member together to form an antenna unit of the frustum structure; the upper-layer antenna radiator and the lower-layer antenna radiator are fixedly connected with the feed network circuit board through tin welding; and each antenna radiator is provided with an independent feeder line and a radio frequency interface. The antenna has the advantages of being wide in beam width, small in loss, light in weight and the like, and is stable and reliable in operation and high in low elevation gain, can be used for beidou first-generation short message communication, and can effectively solve the problem that an existing buoy terminal antenna is relatively narrow in wave beam.

Description

technical field [0001] The invention relates to the technical field of communication antennas, in particular to a Beidou conical buoy antenna which is used in the L-band and S-band of the first generation of Beidou and can improve the low-elevation-angle gain. Background technique [0002] The rapid development of satellite navigation system plays an important role in national security, economic construction and daily life, and is widely used in military, transportation, surveying and mapping, safety monitoring and other fields. Satellite navigation terminal antenna is an indispensable and important part of satellite navigation terminal equipment, and its performance directly affects the performance of the whole machine. Therefore, satellite navigation terminal antenna has important research significance. [0003] At present, the most widely used antenna type in navigation terminal equipment is the ceramic patch antenna, which has the characteristics of small size and easy i...

AI Technical Summary

Problems solved by technology

[0003] At present, the most widely used antenna type in navigation terminal equipment is the ceramic patch antenna, which has the characteristics of small size and easy integration, but has a large weight and narrow bandwidth; it is not conducive to the development needs of lightweight equipment

Moreover, the beam of the ceramic antenna is narrow, the gain at the top is high, and the gain at low elevation angles is low, so it is difficult to ensure that the terminal can maintain normal operation in places where the sea floats violently.

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