Microwave Patch Antenna with Circular Polarization for Environmental Measurement
Microwave Patch Antenna with Circular Polarization for Environmental Measurement
复制标题
用于环境测量的圆极化微波贴片天线
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Fukasawa
中科院分区：
文献类型：
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作者：
Y. Takizawa;A. Fukasawa
提出了一种用于环境测量的新型微波天线。该天线是由三个圆形贴片的饲料和电抗贴片上的接地平面。馈电贴片沿沿着y轴保持长半径谐振到低频fL。该贴片沿沿着x轴在与高频fH谐振的对角边缘处被线性切割。电抗贴片由较小的圆盘制成，用于谐振到频率fM，频率fM设置在fL和fH之间。通过馈电和电抗贴片之间的磁耦合和电耦合，电流iL和iH的相位被延迟和前进。圆极化就是由这个过程产生的。在5 ~ 15 GHz无高阶模的情况下，在10 GHz宽带内获得了3dB的轴比。关键词：圆极化，贴片天线，轴比，X波段天线，环境测量
This paper proposes a novel microwave antenna for environmental measurement. This antenna is composed of three circular patches of feed and reactance patches on a ground plane. The feed patch keeps long radius resonant to low frequency fL along y axis. This patch is cut linearly at diagonal edges resonant to high frequency fH along x-axis. The reactance patch is made of a smaller circular disk for resonant to the frequency fM being set between fL and fH . By magnetic and electric coupling between the feed and the reactance patches, the phases of current iL and iH are delayed and proceeded. Circular polarization is brought by this process. 3dB axial ratio is obtained in wideband at 10GHz without higher mode between 5 ~ 15GHz. Key-Words: Circular polarization, Patch antenna, Axial ratio, X-band antenna, Environmental measurement