无源雷达高增益低轮廓天线的设计

V. Bhat, V. K. Jacob, M. Rakesh, K. Vinoy, T. Prabhakar
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引用次数: 2

摘要

提出了一种用于人体入侵检测的新型高增益天线的设计。人体在微波范围内发出的热辐射被该系统感知。所设计的准平面天线具有宽频带和高增益的特点。该天线的测量峰值增益为13.2 dBi,两个主平面的波束宽度约为35°。工作中心频率选择为3.7 GHz,以方便穿透障碍物,并避免射频干扰。天线阻抗带宽大于45%。对系统性能进行了评估,并进行了实际实验。实验结果表明,该系统能够在2米距离内检测到人的存在。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design of a High Gain Low Profile Antenna for a Passive Radar
Design of a new high gain antenna is proposed for a radiometric system for detecting human intrusion. Thermal radiations emitted by the human body in the microwave range are sensed by this system. The proposed quasi-planar antenna is designed with wide bandwidth and high gain characteristics. This antenna has a measured peak gain of 13.2 dBi and around 35° beamwidth in both principal planes. The center frequency of operation was chosen to be 3.7 GHz for easy penetration through obstacles, as well as for avoiding radio-frequency interference. The antenna has an impedance bandwidth greater than 45%. The system performance was evaluated and real-life experiments were carried out. Experimental results demonstrated capability of the system to detect the presence of a person upto a distance of 2 m.
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