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Design of Modified Wideband Log Periodic Microstrip Antenna with Slot for Navigational Application

机译:用于导航应用的插槽修改宽带日志周期微带天线的设计

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In the present era, development of wireless communication is taking place rapidly which requires an antenna with wide bandwidth and better radiation pattern. Log periodic antenna is one of the solutions to achieve wide bandwidth and better radiation pattern. In this paper, we design the wideband toothed log periodic microstrip antenna having the center feed which gives wide bandwidth, and again optimizing the same antenna by making a slot of 6 × 4 cm at end of arm which improves the bandwidth of 0.1 GHz, the slot structure reduces the cross-polarization and also maintains the bi-directional radiation pattern and co-polarization. Based on the comparison between the two simulated results, we fabricated the antenna having a slot structure, simulated and measured results are presented and discussed in this paper, and they are in close agreement with each other. As we focused on navigational application, due to wideband, the antenna covered the all three navigational bands low L (1.166-1.289 GHz), high L (1.554-1.612 GHz), and S band (2.482-2.502 GHz), so when compared to different reported multiband global navigational antennas, the proposed log periodic microstrip antenna covers the all three GNSS frequency bands. It also gives a gain of more than 4.5 dB at entire frequency band which is acceptable for high-precision GNSS application.
机译:在目前的时代,无线通信的发展正在快速地进行,这需要具有宽带宽和更好的辐射模式的天线。日志周期天线是实现宽带宽和更好的辐射模式的解决方案之一。在本文中,我们设计了具有中心馈送的宽带齿状日志周期性微带天线,其给出了宽带宽,并通过在臂末端制作6×4厘米的槽来再次优化相同的天线,从而提高了0.1 GHz的带宽。槽结构降低了十字极化,并且还保持双向辐射图案和共极化。基于两个模拟结果之间的比较,我们制造了具有槽结构的天线,在本文中呈现和讨论了模拟和测量结果,并且它们彼此密切一致。由于我们专注于导航应用,由于宽带,天线覆盖了所有三个导航频段低L(1.166-1.289 GHz),高L(1.554-1.612 GHz)和S频段(2.482-2.502 GHz),所以在比较时对于不同报道的多频带全球导航天线,所提出的日志周期性微带天线覆盖了所有三个GNSS频带。它还在整个频带中提供了超过4.5dB的增益,这对于高精度GNSS应用是可接受的。

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