This communication presents the design of a miniaturized coplanar waveguide (CPW) fed antenna backed by split‐ring resonators (SRR) for implantable applications. The proposed antenna is designed to operate at Industrial Scientific and Medical (ISM) band (2400‐2483.5 MHz). The antenna has a dimension of 0.1856 λeff × 0.2088 λeff × 0.002946 λeff with a substrate thickness of 0.127 mm. The antenna miniaturization is achieved by using a meandering microstrip line on the top and SRR at the bottom layer. A Superstrate of thickness 0.381 mm is used to improve the impedance matching and to reduce the tissue contact with the radiating patch. The antenna prototype is fabricated and measured using porcine tissue to verify the suitability of the design. From the study, it is inferred that the proposed SRR backed CPW antenna significantly improves the realized gain. The proposed antenna has a gain of −22.7 dB without SRR and an improved gain of −15.05 dB with SRR at 2.45 GHz. The specific absorption rate (SAR) is 0.651 W/Kg for 1 g of tissue. The input power is maintained at 1 mW for satisfying the IEEE/ANSI standard. Furthermore, the proposed antenna's novel features are compared with the state‐of‐the‐art implantable antennas.

中文翻译：

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紧凑的共面波导馈电植入式天线，带有混合开口环谐振器

该通信提出了一种用于植入式应用的，由开环谐振器（SRR）支持的小型共面波导（CPW）馈电天线的设计。拟议中的天线旨在在工业科学和医学（ISM）频段（2400-2483.5 MHz）下工作。天线的尺寸为0.1856λeff×0.2088λeff×0.002946λeff，基板厚度为0.127 mm。通过在顶部使用蜿蜒的微带线，在底部使用SRR，可以实现天线的小型化。厚度为0.381mm的覆盖层用于改善阻抗匹配并减少组织与辐射贴片的接触。使用猪组织制造并测量天线原型，以验证设计的适用性。从研究中 可以推断，所提出的支持SRR的CPW天线显着提高了实现的增益。所提出的天线在没有SRR的情况下具有−22.7 dB的增益，在2.45 GHz处具有SRR时具有−15.05 dB的改进增益。1 g组织的比吸收率（SAR）为0.651 W / Kg。输入功率保持在1 mW，以满足IEEE / ANSI标准。此外，将拟议的天线的新颖功能与最新的可植入天线进行了比较。