EFFICIENCY IMPROVEMENT FOR ELECTRONICALLY STEERED DUAL-BEAM ANTENNA BY USING METAMATERIAL BASED RADOME

IF 0.2 Q4 MULTIDISCIPLINARY SCIENCES Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI:10.55766/sujst-2023-04-e0862
Auychai Yatongchai, Peerasan Khamsalee, Rangsan Wongsan
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Abstract

Efficiency improvement for electronically steered dual-beam antenna by using metamaterial based radome are a PCB based circular-patch antenna design for dual beam steering is presented. This design employs the symmetrical slots inserted into the surface at eight angles of circular-patch antenna, thus, the original circular-patch antenna is reconfigured as consisting of eight small square-patches placed on eight angles and separated by such the slots. The beam steering property of this antenna can be implemented by controlling the on/off state of PIN diodes, which connected between each small square-patches and main patch at each angle of the structure. When the diode is on, the small square-patch becomes a part of radiating patch, whereas is off, the small square-patch becomes the parasitic element. The antenna is designed for the future high altitude platform such as, drone, Aircraft, missile, etc. That can be tracked or commanded from its control station within the given range and without disconnection. This antenna is investigated at 5.8 GHz of frequency and provided the bandwidth at 113 MHz, which is high enough for the unmanned aerial vehicles UAVs application, The antenna provides the gain of 7.13 dB without meta radome and switchable the dual-beam in eight different space quadrants for the azimuth plane by exciting forward bias with binary sequence to the PIN diodes. While it provides the constant tilted beam of 35° and angular width (3dB) 52.4° in the elevation plane and efficiency improvement for the antenna provides a gain of 10.18 dB with meta radome, approximately.
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利用超材料天线罩提高电子操纵双波束天线的效率
利用超材料天线罩提高电子制导双波束天线的效率,提出了一种基于PCB的双波束制导圆贴片天线设计方案。本设计采用在圆贴片天线的8个角度上插入对称槽,将原来的圆贴片天线重新配置为8个小方片,放置在8个角度上,并被这些槽隔开。该天线的波束导向特性可以通过控制PIN二极管的开/关状态来实现,PIN二极管连接在结构的每个角度的每个小方形贴片和主贴片之间。当二极管打开时,小方形贴片成为辐射贴片的一部分,而当二极管关闭时,小方形贴片成为寄生元件。该天线设计用于未来的高空平台,如无人机、飞机、导弹等。可以在给定范围内不间断地从其控制站跟踪或指挥。该天线的工作频率为5.8 GHz,带宽为113 MHz,足以满足无人机的应用需求。该天线在无元天线罩的情况下可获得7.13 dB的增益,通过对PIN二极管进行二进制序列的正向偏置激励,可在方位平面的8个不同空间象限上切换双波束。同时它提供了35°的恒定倾斜波束和52.4°的角宽(3dB),并且天线效率的提高提供了10.18 dB的增益,与元天线罩相比,大约。
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来源期刊
Suranaree Journal of Science and Technology
Suranaree Journal of Science and Technology MULTIDISCIPLINARY SCIENCES-
CiteScore
0.30
自引率
50.00%
发文量
0
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