We present a miniaturized, dual-band patch antenna array element that is designed for use in a three-dimensional (3-D) microwave tomography system for breast imaging. Dual-band operation is achieved by manipulating the fundamental resonant mode of the patch antenna and one of its higher order modes. Miniaturization and tuning of the resonant frequencies are achieved by loading the antenna with nonradiating slots at strategic locations along the patch. This results in a compact, dual-band antenna with symmetric radiation patterns and similar radiation characteristics at both bands of operation. The performance of the antenna in a biocompatible immersion medium is verified experimentally.

中文翻译：

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用于微波乳房成像的双频段微型贴片天线

我们提出了一种小型化的双频带贴片天线阵列元件，其设计用于用于乳房成像的三维 (3-D) 微波断层扫描系统。双频带操作是通过操纵贴片天线的基本谐振模式及其高阶模式之一来实现的。谐振频率的小型化和调谐是通过在沿着贴片的关键位置加载非辐射缝隙的天线来实现的。这样就形成了一个紧凑的双频段天线，在两个工作频段上具有对称的辐射模式和相似的辐射特性。天线在生物相容性浸入介质中的性能通过实验验证。