Multi-feed-source double-frequency high-separation wide-beam high-stability phase centre antennae

A high isolation, phase center technology, applied in antennas, antenna coupling, antenna arrays, etc., can solve the problems of difficult adjustment, low phase center stability, narrow bandwidth, etc., to improve isolation, increase gain, and reduce mutual coupling. Effect

CN103022660BActive Publication Date: 2014-12-17SUZHOU TIANYE MECHANICAL IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-12-17

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Abstract

The invention relates to a multi-feed-source double-frequency high-separation wide-beam high-stability phase centre antennae. The multi-feed-source double-frequency high-separation wide-beam high-stability phase centre antennae comprises an antenna cap and a metal inverted frustum substrate, wherein the metal inverted frustum substrate is internally provided with a first power divider and a second power divider, first and second radiating antennas are arranged in the antenna cap and on the metal inverted frustum substrate and are fixed through hollow short circuit screws, and a first coaxial cable is arranged between the first radiating antenna and the metal inverted frustum substrate; one end of an inner core is connected with a radiation fin of the first radiating antenna, the other end of the inner core is connected with a first branch of the first power divider, one end of a shielding layer is connected with ground of the first radiating antenna, and the other end of the shielding layer is connected with the ground of the first power divider; a fifth coaxial cable is arranged between the second radiating antenna and the metal inverted frustum substrate and the fifth coaxial cable passes through the hollow short circuit screws, and the inner core of the fifth coaxial cable is respectively connected with the ground of the second radiating antenna and the first branch of the second power divider; and the shielding layer is respectively connected with the radiation fin of the second radiating antenna and the ground of the second power divider.
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Description

[0001] Multi-feed dual frequency high isolation wide beam high stable phase center antenna. technical field

[0002] The invention relates to a multi-feed dual-frequency high-isolation wide-beam high-stable phase center antenna suitable for geodetic satellite navigation ground receiving terminals and high-precision positioning and directional satellite navigation ground receiving terminals. The typical working frequency bands are L and S Frequency band, with significant advantages such as compact structure, small standing wave, small axial ratio, wide axial ratio bandwidth, high dual-frequency isolation, and ultra-stable phase center within a wide beam range. Mainly used in the US global satellite navigation system, China's Beidou, Russia's GLONASS and European Galileo satellite navigation and positioning systems, geodetic satellite navigation ground receiving terminals with millimeter-level positioning accuracy, short baselines and hundredth-level high precision In various hi...

Examples

Embodiment Construction

[0034] A multi-feed source dual-frequency high-isolation wide-beam high-stable phase center antenna includes: a radome 1 and a metal inverted cone base 12 for reflecting signals and suppressing multipath interference, and the radome 1 is arranged on a metal On the inverted cone base 12, a first power divider 13 and a second power divider 14 are provided in the metal inverted cone base 12, and mutual The first radiation antenna and the second radiation antenna stacked together are fixed on the metal inverted cone base 12 by the hollow short-circuit screw 2 passing through the center of the first radiation antenna and the second radiation antenna, and the first radiation antenna and the metal A first coaxial cable 11-1 is arranged between the inverted cone bases 12, and one end of the inner core of the first coaxial cable 11-1 is connected with the radiation sheet of the first radiation antenna, and the first coaxial cable 11-1 The other end of the inner core is connected to the...