Miniaturized Dual Antiphase Patch Antenna Radiating into the Human Body at 2.4 GHz.
Miniaturized Dual Antiphase Patch Antenna Radiating into the Human Body at 2.4 GHz.
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小型双反相贴片天线，以 2.4 GHz 频率辐射人体。
DOI：
10.1109/jerm.2023.3247959
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发表时间：
2023
影响因子：
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通讯作者：
Makaroff,SergeyN
中科院分区：
文献类型：
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作者：
Adams,JohnathanW;Chen,Louis;Serano,Peter;Nazarian,Ara;Ludwig,Reinhold;Makaroff,SergeyN
一个由两个紧密间隔的反相位贴片元件组成的体上天线，用于微波成像可以提供增强的信号穿透到组织中。通过进一步集成180度片上功率分配器和双反相贴片天线元件，设计了一个集成在单个18.5 mm × 10 mm × 1.6 mm电路板组件中的低轮廓小型化天线，并进行了数值和实验评估。这是作者已知的在给定频段内最小的体上天线。这种线极化天线可能潜在地作为未来高分辨率微波成像密集天线阵列的构建块。选择2.4 GHz频段作为设计目标。最终的天线尺寸是小型化、信噪比（SNR）和目标天线带宽（2.3-2.5 GHz）之间的折衷。表面波（二次辐射分量）的影响也在设计考虑中，同时最大限度地提高检测信号的信噪比。
An on-body antenna, comprised of two closely-spaced antiphase patch elements, for microwave imaging may provide enhanced signal penetration into the tissue. By further integrating a 180-degree on-chip power splitter with the dual antiphase patch antenna element, a low-profile miniaturized antenna, integrated into a single 18.5 mm × 10 mm × 1.6 mm circuit board assembly, is designed and evaluated both numerically and experimentally. This is the smallest on-body antenna known to the authors for the given frequency band. This linearly polarized antenna may potentially serve as a building block of a dense antenna array for prospective high-resolution microwave imaging. A 2.4 GHz band was chosen as the design target. The final antenna size was a compromise between the miniaturization, the SNR (Signal-to-Noise Ratio), and the targeted antenna bandwidth (2.3–2.5 GHz). The effect of surface waves (the secondary radiating components) was also factored in the design consideration, while maximizing the detected signals’ SNR.