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Reflective antenna array and beam scanning method

An antenna array and reflective technology, applied in the field of communication, can solve the problems of large size of reflective antenna array and insufficient beam control function, and achieve the effects of low power consumption, comprehensive beam control function, and overall volume reduction.

Inactive Publication Date: 2017-03-08
JIANGSU SAIBO DEFENSE TECH CO LTD +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the size of the existing reflective antenna array is still relatively large, and the beam steering function is not comprehensive enough.

Method used

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  • Reflective antenna array and beam scanning method
  • Reflective antenna array and beam scanning method
  • Reflective antenna array and beam scanning method

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Embodiment Construction

[0027] After research, the applicant believes that: the traditional reflector antenna achieves the desired radiation direction by designing the shape of the reflector, and the structure and performance of the reflector are already fixed, so it is impossible to control the antenna in real time according to actual needs. The programmable reflector antenna has the advantages of the traditional parabolic reflector antenna and phased array antenna. By adjusting the unit arrangement of the two-dimensional microstrip reflector antenna, a single beam or multiple beams can work at the same time and cover a specific shape of the airspace. It has been widely used in technical fields such as satellite communication and electronic countermeasures. Microstrip reflective antenna is a key technology to improve the performance of satellite communication system, and it is also an important means of sorting a large number of targets in modern electronic countermeasures. The technical solutions a...

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Abstract

The invention discloses a reflective antenna array and a beam scanning method. The reflective antenna array comprises a programmable substrate and a metamaterial surface, wherein the metamaterial surface comprises a plurality of active antenna units, and the active antenna unit comprises a metamaterial unit and an active diode connected between the metamaterial units. When the states of the active diodes are arranged differently, 0 and 1 states on the surface of the metamaterial are distributed differently, and further, plane waves are reflected to a needed radiation beam. Corresponding 0 and 1 coding arrangement can be quickly designed, corresponding active diode is quickly controlled through the programmable substrate, and the beam scanning angle and the radiation beam are controlled. In comparison with the traditional structure, a radiation beam with a needed direction angle can be realized without mechanically rotating the antenna structure, the overall size is reduced, and the flexibility is enhanced.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a reflective antenna array. Background technique [0002] Radar antenna is an important device used in radar to radiate and receive electromagnetic waves and determine its detection direction. The important tactical performance of radar, such as detection distance, detection range, detection angle (azimuth, elevation) accuracy, angular resolution and anti-interference ability, etc. , are related to the performance of the radar antenna. [0003] In order to achieve radar detection and tracking of targets, general radar antennas need to have beam scanning capabilities. According to their scanning methods, radar antennas can be divided into three types: mechanical scanning antennas, electronic scanning antennas, and electromechanical scanning antennas. Most mechanical scanning antennas are parabolic antennas and lens antennas, which have the advantages of small side lobe and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q3/38H01Q13/02H01Q1/12H01Q19/10H01Q21/00
CPCH01Q1/12H01Q3/385H01Q13/02H01Q15/0086H01Q19/10H01Q21/00
Inventor 万向张茜郭鹏良李海江
Owner JIANGSU SAIBO DEFENSE TECH CO LTD
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