飞机监视用t形DGS贴片天线的设计与分析

M. Pallavi, Pramod Kumar, T. Ali, Satish B. Shenoy, Lokesh Sharma
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引用次数: 1

摘要

本文设计了一种用于交通报警与避碰系统的插入馈电矩形微带贴片天线(RMPA)。TCAS是为防止事故发生而安装在飞机上的强制性监视系统。为了提高传统RMPA的带宽,在表面蚀刻了一种新型的改进t形缺陷。利用高频结构模拟器(HFSS)软件对所提出的结构进行了优化和仿真。对该结构的一般天线参数包括阻抗、反射系数、带宽、增益、驻波比和辐射方向图进行了仿真和分析。常规RMPA工作在1.06GHz,带宽为13.10 MHz (1.0740 ~ 1.0609 ghz), VSWR为1.13,增益为4.69dB;缺陷RMPA工作在1.05GHz,带宽为56.40 MHz (1.0821 ~ 1.0257 ghz), VSWR为1.74,增益为3.68dB。与传统的RMPA天线相比,该天线带缺陷地平面的带宽提高了43.30MHz。天线的增益降低了近1dB,驻波比略有偏离。然而,所获得的增益和驻波比足以满足飞机监视应用的需要。在航空监视系统中,更宽的带宽对于提高信道容量、空域效率和扩大监视范围至关重要。因此,所提出的宽带天线最适合飞机监视应用(960至1215 MHz)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and Analysis of Patch Antenna with T-Shape DGS for Aircraft Surveillance Applications
In this paper, an inset-fed rectangular microstrip patch antenna (RMPA) is designed for traffic alert and collision avoidance system (TCAS) application. The TCAS is a mandatory surveillance system installed on aircraft to prevent accidents. To improve the bandwidth of the conventional RMPA, a novel modified T-shape defect is etched on the ground surface. The High-Frequency Structure Simulator (HFSS) software is used to optimize and simulate the proposed structures. The general antenna parameters which include impedance, reflection coefficient, bandwidth, gain, VSWR, and radiation pattern have been simulated and analyzed for the proposed structure. The conventional RMPA resonates at 1.06GHz with a bandwidth of 13.10 MHz (1.0740-1.0609GHz), VSWR of 1.13, and a gain of 4.69dB, whereas the RMPA with defect operates at 1.05GHz with a bandwidth of 56.40 MHz (1.0821-1.0257GHz), VSWR of 1.74, and a gain of 3.68dB. In comparison to conventional RMPA, the proposed antenna with defected ground plane has improved the bandwidth by 43.30MHz. The gain of the antenna is reduced by nearly 1dB and the VSWR has slightly deviated. However, the obtained gain and VSWR are sufficient to meet the need for aircraft surveillance applications. In aviation surveillance systems, broader bandwidth is essential to improve channel capacity, airspace efficiency, and to broaden surveillance over a wider area. Hence, the proposed broadband antenna is optimum for the aircraft surveillance application (960 to 1215 MHz).
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