双极化矩形贴片天线的DGS设计

2011 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2011-12-01 DOI:10.1109/AEMC.2011.6256813

C. Ghosh, S. Moitra, J. Kundu, A. K. Mukhapadhyaya, S. K. Parui

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引用次数: 5

摘要

提出了一种集成缺陷接地结构的高端口隔离双频正交极化矩形贴片天线。螺旋形dgs集成微带线增强了天线的端口隔离性，同时将2.45 GHz端口1馈送到天线，并滤除端口2的3.0 GHz接收信号。同样，矩形dgs集成微带线增强了天线的端口隔离，同时馈送3.0 GHz端口和端口2，过滤出端口1的2.45 GHz信号。与DGS集成的两个不同端口的微带线限制了来自发射器或接收器的高次谐波信号。该贴片通过75Ω线阻抗微带馈线进行激励。DGS集成微带线的图像阻抗为150Ω，由DGS几何结构控制。采用带DGS和不带DGS两种方法进行了端口间隔离的实验研究。测量结果表明，DGS集成微带天线后，端口隔离度提高了25dB以上。

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Design of a dual polarized rectangular patch antenna using DGS

This paper presents a high port isolation dual frequency orthogonally polarized rectangular patch antenna integrated with defected ground structure (DGS). A spiral-shaped DGS-integrated microstrip line enhances the port isolation of the antenna, while feeding the 2.45 GHz port, port-1 to the antenna and filtering out 3.0 GHz receiving signal from port-2. Similarly a rectangular shaped DGS-integrated microstrip line enhances the port isolation of the antenna, while feeding the 3.0 GHz port, port-2 and filtering out the 2.45 GHz signal from port-1. The microstrip line at two different ports integrated with DGS restricts the highorder harmonics signals coming from transmitter or receiver. The patch is excited through microstrip feed line of 75Ω line impedance. DGS-integrated microstrip line offers image impedance of 150Ω and it is controlled by DGS geometry. An experiment of investigating isolation between the ports has been performed by employing with and without DGS. Measurements show an improvement of more than 25dB in the port isolation when DGS integrated microstrip antenna.

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2011 IEEE Applied Electromagnetics Conference (AEMC)

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