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Multi-beam phased-array satellite communication antenna array and directivity control system

A satellite communication and array antenna technology, applied in the directions of radio transmission systems, antennas, transmission systems, etc., can solve the problems of difficult phase control, difficult to meet the requirements of tracking speed, and complex structure of electronically scanned satellite antennas.

Inactive Publication Date: 2015-06-03
北京航天科工世纪卫星科技有限公司
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Problems solved by technology

However, for objects that move freely in the air, it is difficult to meet the tracking speed by using mechanical scanning, especially for objects that move at high speed and whose flight attitude changes rapidly, it is difficult to use mechanical scanning to track
The scanning and tracking speed of the multi-beam phased array satellite antenna is very fast, and it is widely used in various radar antennas and satellite antennas. However, the structure of the general electric scanning satellite antenna is complicated, the heat dissipation problem is not easy to solve, and the phase control is very difficult.

Method used

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  • Multi-beam phased-array satellite communication antenna array and directivity control system

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is described further, in the accompanying drawing that is used in the following description, the same part is marked with the same label, and the embodiment of the omnidirectional satellite communication array antenna of the present invention is with reference to Figures 1 to 3 To illustrate.

[0020] attached figure 1 Shown is the overall structural diagram of the multi-beam phased array satellite communication array antenna. The entire antenna is divided into four antenna combinations, and each antenna combination is self-contained (including multiple radiation units, phase shifters, low-noise amplifiers, etc.), accounting for 90° installation space, responsible for 90° circumferential coverage and ±80° axial coverage. The cross-connection of radio frequency cables should be reduced as much as possible between the four combinations. After the processing is completed, they will be assembled on the ...

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Abstract

The invention provides a multi-beam phased-array satellite communication antenna array and a directivity control system, which are used for a satellite communication device of a movable object with a high-speed automatic tracking function. The multi-beam phased-array satellite communication antenna array comprises four antenna assemblies, wherein all of the antenna assemblies are same in structures and functions and are mutually independent, each antenna assembly comprises two transmitting units and one receiving unit, and beam omnidirectional covering is realized by a total of eight transmitting units and four receiving units; each transmitting unit is composed of a power dividing phase shifter and six antenna array elements, and a narrow transmitting beam is formed by the six antenna array elements by the power dividing phase shifter through phase deviation, so as to increase transmitting gains; each receiving unit is composed of a low-noise amplifier and two antenna array elements, and an antenna controller, a one-out-of-four switch, a one-out-of-eight switch and a power amplifier are arranged in each antenna assembly.

Description

technical field [0001] The invention relates to the structure of multi-beam satellite communication array antenna for satellite communication and its directional control system, in particular to the array antenna structure and its directional control system for high-speed moving objects or objects with frequent attitude changes to communicate with satellites. Background technique [0002] Ground satellite navigation equipment and ground satellite transceiver two-way antennas have developed very maturely. As air activities become more and more frequent, in addition to receiving data from navigation satellites and receiving satellite navigation services, flying objects in the air also need to communicate with satellites. Currently, however, airborne objects are mostly limited to satellite navigation applications. [0003] Satellite antennas can be divided into mechanical scanning tracking and electrical scanning tracking according to scanning and tracking methods. Mechanical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q3/36
CPCH04B7/1851
Inventor 关晓磊单立超吕倩吕学治
Owner 北京航天科工世纪卫星科技有限公司
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