Dual-Band On-Body Near Field Antenna for Measuring Deep Core Temperature With a Microwave Radiometer

Abstract

Deep core temperature is the most basic and important information about health conditions. The non-contact infrared thermometer is widely used to measure the temperature of the human body. However, the infrared thermometer cannot measure the deep core temperature. To overcome this limitation, measuring deep core temperature with a microwave radiometer is gaining attention. In this study, we propose a dual-band on-body near-field antenna for measuring deep core temperature with a microwave radiometer application. The proposed antenna has a compact size of 20 mm × 30 mm × 1.52 mm. The negative (-) radiator is located at the top of the substrate and the positive (+) radiator is located at the bottom of the substrate. The dual-band is proposed for high temperature resolution and is achieved by a meander slot on the radiator. The antenna is fabricated on a high dielectric substrate and the stubs are proposed to reduce the size of the proposed antenna so that it can be used on various human body parts.INDEX TERMS deep core temperature measurement, dual-band antenna, on-body antenna

Compact Dual-Band On-Body Near Field Antenna With Reflector for Measuring Deep Core Temperature

“…In our previous study [30], it was reported that most studies on measuring deep core temperature with a microwave radiometer did not focus on the antenna, and consequently proposed an on-body antenna for measuring deep core temperature with compact size. However, the problem and limitation of our previous study was that the simulated and measured reflection coefficient results were different.…”