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首页> 外文会议>Proceedings of the 2016 IEEE International Conference on Wireless Communications, Signal Processing and Networking >UWB microstrip patch antenna with flower shaped patch and cavity structure
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UWB microstrip patch antenna with flower shaped patch and cavity structure

机译：具有花形贴片和空腔结构的UWB微带贴片天线

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摘要

Ultra-Wideband antennas ranging from 3.1 to 10.6 Ghz, have gained increasing attention mainly because of the high data transmission rates, well beyond those possible with currently available technologies such as 802.11a, b, g, Wi-Max, etc. A UWB antenna with dual polarization is designed and simulated using ANSYS HFSS simulation software and its performance was analyzed. The proposed structure of the antenna is designed with a hexagon shape and a flower shaped patch and their results are compared to know the best among the two shapes. It is found that Flower shaped patch structure gives better results and the structure consists of a flower shaped patch with two ports and four capacitively coupled feeds. The four feeds are formed from two shapes: Trapezoidal shape and Triangular shape which forms a vertical patch and a horizontal patch respectively . The feeds excite a square radiating patch as they are placed at the center of the antenna structure. The feeds are connected to the microstrip lines, which are printed on the dielectric substrate (FR4), via holes. Two tapered baluns are used for getting differential feeds and for exciting the entire antenna structure to improve the gain and also to achieve high isolation between the two ports. Port 1 provides Horizontal Polarization and Port 2 provides Vertical Polarization. The return loss measured for the dual polarized antenna with the hexagon shape is -10.7dB, the measured VSWR is 1.8 and the measured antenna gain value is 0.784dB. The return loss measured for the dual polarized antenna with the Flower shaped patch is -20.04dB, the measured VSWR is 1.2 and the measured antenna gain value is 1.8485dB.A Cavity structure is then introduced into the flower shaped patch design for the sake of improvement in gain of the proposed design and the results are analyzed. It is found that gain of 2.1989dB is got from the cavity structure. The main characteristic of UWB Antennas is its ability to provide Polarization Diversity, which enhances the channel capacity significally. This make them more attractive than the usual antennas with linear polarization.
机译：从3.1到10.6 Ghz的超宽带天线引起了越来越多的关注，这主要是由于其高数据传输速率，远远超出了诸如802.11a，b，g，Wi-Max等当前可用技术所能实现的传输速率。UWB天线利用ANSYS HFSS仿真软件设计并仿真了具有双极化的双极化激光器，并对其性能进行了分析。拟议的天线结构设计为六边形和花形贴片，并将它们的结果进行比较，以了解这两种形状中最好的一种。发现花形贴片结构可提供更好的结果，该结构由具有两个端口和四个电容耦合馈源的花形贴片组成。四种进料由两种形状形成：梯形和三角形，分别形成垂直斑块和水平斑块。当将馈源置于天线结构的中心时，它们会激发出一个方形的辐射贴片。进料通过孔连接到微带线，微带线印在介电基板（FR4）上。两个锥形平衡-不平衡变换器用于获取差分信号，并激励整个天线结构，以提高增益，并在两个端口之间实现高度隔离。端口1提供水平极化，端口2提供垂直极化。对于六边形的双极化天线测得的回波损耗为-10.7dB，测得的VSWR为1.8，测得的天线增益值为0.784dB。对于带花形贴片的双极化天线测得的回波损耗为-20.04dB，测得的驻波比为1.2，测得的天线增益值为1.8485dB，然后将腔结构引入到花形贴片设计中改进了拟议设计的增益，并分析了结果。发现腔结构的增益为2.1989dB。 UWB天线的主要特征是其提供极化分集的能力，从而显着增强了信道容量。这使它们比普通的线性极化天线更具吸引力。

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