Reconfigurable Multiband Matching Circuit Design for a Non-resonant Antenna in Wireless Point-of-Care Biosensors

Abstract

Point-of-care (PoC) test is a portable test that allows patients and healthcare practitioners to perform ondemand real-time tests outside the laboratory and hospital environments. Its widespread adoption in healthcare systems enhanced the quality of care by reducing errors and providing rapid results which allow for faster treatment decisions. Adding wireless connectivity to PoC systems provides secure and instant wireless access to patients’ vital signs by healthcare professionals regardless of their location, as they can provide real-time remote monitoring, diagnostic and emergency services for patients. This paper presents a design of a reconfigurable impedance matching network (RIMN) for a non-resonant antenna chip to be implemented in wearable biosensors utilized in PoC tests. The purpose of the RIMN is to match the antenna chip’s impedance to the Industrial, Scientific and Medical (ISM) frequencies, viz: 900 MHz and 2.4 GHz. Return losses at below -10 dB with high bandwidths (of 200 MHz) and radiated power efficiencies (of over 95 %) have been achieved. The proposed mathematically modeled integrated hybrid wireless RFPerovskite energy harvester for multipurpose 5G/6G/Wi-Fi PoC biosensors promises superior performance metrics (including over 78% energy-harvesting efficiency) than the conventional approaches.