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Low-cost planar phased-array antenna for low-orbit satellite communication and method for realizing phased-array scanning by using low-cost planar phased-array antenna

A phased array antenna and satellite communication technology, applied in the direction of antenna array, antenna, specific array feeding system, etc., can solve the difficult problems of antenna low-profile structure, complex feeding network, low efficiency, etc., to achieve beneficial Large-scale phased array design, small size, and multi-mode effects

Inactive Publication Date: 2020-07-17
成都环宇远景科技有限责任公司
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Problems solved by technology

However, this method usually requires a large number of phase shifters and amplifiers, and the feed network is very complicated, resulting in high cost, large loss, and low efficiency, which makes some civil communications prohibitive
The development of planar reflectarrays and array lenses with electronic beamforming capabilities also provides many new possibilities for high-performance, low-cost phased array antenna structures, but it is difficult to achieve low profile antennas due to the existence of feed antennas structure

Method used

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  • Low-cost planar phased-array antenna for low-orbit satellite communication and method for realizing phased-array scanning by using low-cost planar phased-array antenna
  • Low-cost planar phased-array antenna for low-orbit satellite communication and method for realizing phased-array scanning by using low-cost planar phased-array antenna
  • Low-cost planar phased-array antenna for low-orbit satellite communication and method for realizing phased-array scanning by using low-cost planar phased-array antenna

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Embodiment Construction

[0022] Such as figure 1 As shown, its phased array antenna consists of N x ×N y Composed of array elements 1, where N x =N y =6. The present invention takes N x =N y = 6 phased array as the research object, but the method is not limited to figure 1 The 6×6 array elements in .

[0023] Such as Figure 2-4 Shown is a schematic diagram of the array element structure of a low-cost flat-panel phased array antenna for low-orbit satellite communications. Such as figure 2 As shown, the array element 1 is composed of three layers of dielectric boards. The first and second layers are Rogers 4350B dielectric boards 5 with a dielectric constant of 3.66; the third layer is an FR4 dielectric board 6 with a dielectric constant of 4.4. The upper surface of the first layer of Rogers medium is the radiation patch 2, such as image 3 shown. The radiation patch 2 layer contains 4 square cut corners to achieve polarization reconfigurable characteristics. The 4 cutting corners are con...

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Abstract

The invention discloses a design of a low-cost planar phased-array antenna for low-orbit satellite communication and a method for realizing phased-array scanning by using the low-cost planar phased-array antenna. The method mainly comprises the following steps: S1, setting Nx * Ny array elements for a phased-array antenna, correspondingly providing Nx * Ny feeding points, and regularly arranging the Nx * Ny feeding points in a rectangular grid shape: the distance between two adjacent feeding points in the horizontal direction is dx, and the distance between two adjacent feeding points in the vertical direction is dy; S2, controlling the on-off of the PIN diode to feed each array element in different directions to realize the equivalent space rotation of the array element; and S3, feeding the Nx * Ny array elements, and controlling on / off of PIN diodes on the antenna units through direct current to obtain different phase distributions so as to realize two-dimensional scanning of the phased array.

Description

technical field [0001] The invention relates to the field of phased array design, and in particular proposes an effective method for the low-cost design of a low-orbit satellite communication plate phased array antenna. Background technique [0002] With the rapid development of applications such as mobile broadband and the Internet of Things, satellite communication technology and the information and communication industry are undergoing rapid changes. Satellite communication technology, as the name implies, refers to the communication method that uses artificial earth satellites as relay stations to realize the reception or emission of electromagnetic waves of communication base stations on the earth. It can achieve radio wave communication between two or more base stations, and has a wide coverage. The advantages of large communication capacity and secure information transmission make it play a key role in the new generation of communication systems, not only in the milit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q3/34H01Q15/24H01Q21/00
CPCH01Q1/38H01Q1/50H01Q3/34H01Q15/24H01Q21/0006
Inventor 杨鹏尹璐
Owner 成都环宇远景科技有限责任公司
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