In this paper, a compact circular shape ultra-wide microstrip antenna is proposed for the detection of breast tumor. The proposed antenna is a two-port MIMO antenna of 1 × 2 elements. The dimensions of the proposed antenna are 34 mm × 18mm × 1.6 mm. It is designed over a lower-cost FR-4 epoxy substrate with a partial ground plane. The antenna is operated between the frequency range of 3.1–9.6 GHz. Isolation between the antenna element is less than −22 dB from 3.1 GHz to 7 GHz and −25 dB between 7 GHz and 10.6 GHz. The obtained ECC of the designed MIMO antenna is less than 0.01 and also DG is almost 10 dB in the entire UWB range. Further, the 3D breast phantom model is also simulated for analysis of the effect of SAR. Due to the variation in the electrical properties of cancerous cells and healthy cells it is possible to identify the cancerous tumor using SAR analysis. The obtained maximum Average SAR value without a tumor is 41.97 W/kg and with a cancerous tumor is 72 W/kg. Also, the variation in reflection coefficient helps to detect the tumor of the same composition but having different locations and having different sizes inside breast phantom. The principal component analysis is done to change the multi-variation in reflection coefficients data value to a single point value for better analysis.

中文翻译：

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用于乳腺肿瘤检测的圆形 MIMO 天线传感器

本文提出了一种用于乳腺肿瘤检测的紧凑型圆形超宽微带天线。建议的天线是 1 × 2 单元的双端口 MIMO 天线。建议天线的尺寸为 34 mm × 18mm × 1.6 mm。它设计在具有部分接地层的低成本 FR-4 环氧树脂基板上。天线在 3.1–9.6 GHz 的频率范围内工作。天线元件之间的隔离度在 3.1 GHz 到 7 GHz 之间小于 -22 dB，在 7 GHz 到 10.6 GHz 之间小于 -25 dB。所设计的 MIMO 天线获得的 ECC 小于 0.01，并且在整个 UWB 范围内 DG 几乎为 10 dB。此外，还模拟了 3D 乳房体模模型，用于分析 SAR 的效果。由于癌细胞和健康细胞的电特性不同，因此可以使用 SAR 分析来识别癌性肿瘤。获得的最大平均 SAR 值在没有肿瘤的情况下为 41.97 W/kg，在有癌性肿瘤的情况下为 72 W/kg。此外，反射系数的变化有助于检测相同成分但在乳房模型内部具有不同位置和不同大小的肿瘤。进行主成分分析以将反射系数数据值的多变量更改为单点值，以便更好地分析。反射系数的变化有助于检测乳房模型内部相同成分但位置不同、大小不同的肿瘤。进行主成分分析以将反射系数数据值的多变量更改为单点值，以便更好地分析。反射系数的变化有助于检测乳房模型内部相同成分但位置不同、大小不同的肿瘤。进行主成分分析以将反射系数数据值的多变量更改为单点值，以便更好地分析。