Wideband circular polarized meandered patch antenna for microwave imaging

被引：0
作者：
M. Sekhar
Suman Nelaturi
机构：
[1] Vignan’s Foundation for Science,Department of Electronics and Communication Engineering
[2] Technology and Research,undefined
来源：
Analog Integrated Circuits and Signal Processing | 2022年 / 111卷
关键词：
Wideband; Circular polarization; Coplanar waveguide feed; Meandered patch;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A wideband circular polarized meandered antenna for microwave imaging (MI) is proposed. Initially, a meandered rectangular patch with I stub is used to achieve a single band antenna. Then the I stub is further extended as an T stub to attain a dual-band antenna. To realize the wideband property a rectangular stub is loaded to the ground in parallel to the T shaped stub loaded to the patch. The rectangular patch is meandered with slots and truncations. The patch is fed with a coplanar waveguide (CPW) feed and the entire model is placed in a hybrid pentagonal slot made in the antenna ground to make it a space-saving antenna. The measured result shows a good wideband performance of 50.4% (2.56–4.3 GHz) with voltage standing wave ratio < 2, and a peak gain of 5.7 dB with a stable radiation pattern in a compact area of 35mm2. The property of circular polarization with a bandwidth of 45.6% (2.64–4.2 GHz) can mitigate the polarization mismatch problem and enables polarization coding used in MI systems.
引用
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页码：81 / 88
页数：7
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