Todi Swati, Agarwal Poonam
MicroSystems Lab (µSL), School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, 110067 India.
Biomed Eng Lett. 2024 Dec 18;15(1):249-260. doi: 10.1007/s13534-024-00443-7. eCollection 2025 Jan.
This paper demonstrates real-time, label-free, contact-based glucose sensor design of inset-fed Microstrip Patch Antenna (MSPA) genres: Slotted Microstrip Patch Antenna (SMSPA) and Through-hole Microstrip Patch Antenna (THMSPA). In SMSPA, multiple slots are created along the width edge of the patch. In THMSPA, a through-hole is introduced across the antenna including all the layers: patch, substrate and ground conductor of the MSPA. The proposed designs are geared towards enhancing the electric field distribution along the patch, and to utilize that region as the sensing area. The electric field intensity at the resonant frequency is 45505V/m, 53145V/m and 71348V/m for MSPA, SMSPA and THMSPA, respectively. Experimental sensitivity of the proposed glucose sensor increased from 8.901dB/g/ml to 23.575dB/g/ml and 41.525dB/g/ml for SMSPA and THMSPA, respectively. There is significant enhancement in sensitivity in terms of MHz/g/ml for MSPA, SMSPA and THMSPA which is 112.286, 174.857 and 548.571, respectively.
本文展示了嵌入式馈电微带贴片天线（MSPA）类型的实时、无标记、基于接触的葡萄糖传感器设计：缝隙微带贴片天线（SMSPA）和通孔微带贴片天线（THMSPA）。在SMSPA中，沿着贴片的宽度边缘创建多个缝隙。在THMSPA中，在整个天线中引入一个通孔，包括MSPA的所有层：贴片、基板和接地导体。所提出的设计旨在增强沿贴片的电场分布，并将该区域用作传感区域。对于MSPA、SMSPA和THMSPA，谐振频率下的电场强度分别为45505V/m、53145V/m和71348V/m。所提出的葡萄糖传感器的实验灵敏度对于SMSPA和THMSPA分别从8.901dB/g/ml提高到23.575dB/g/ml和41.525dB/g/ml。对于MSPA、SMSPA和THMSPA，以MHz/g/ml为单位的灵敏度有显著提高，分别为112.286、174.857和548.571。
