A Design of Microwave LC-Resonator-Based Biosensor with Double Sensentive Region for Healthy-IoT Applications

This study presents a microwave LC-resonator-based biosensor with double sensitive region potentially for healthy Internet of things (IoT) applications. The proposed LC-resonator consists of an intertwined inductor and an interdigital capacitor, which can separately provide a sensitive region. The inductance and capacitance can be varied after the sensitive region contacts with potential healthy-IoT-based biomarker solution. Through two sensitive region, it could be feasible that two different biomarker solutions for two potential disease can be detected at the same time, for example, glucose biomarker solution for diabetes and uric biomarker solution for kidney failure. Moreover, disease that has to be diagnosed based on two necessary biomarkers could be feasibly proceeded based on our work. The proposed biosensor is simulated based on the GaAs-based integrated passive technology possessing a chip size of $1379 \mu m \times 585 \mu m$ and operation frequency of 7.46 GHz. This work is targeting to provide a new method to deal with healthy-IoT applications.