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Title: Wideband Epidermal Antenna for Medical Radiometry
Authors: León, Germán
Herrán, Luis F.
Mateos, Ignacio
Villa, Enrique
Ruiz Alzola, Juan Bautista 
UNESCO Clasification: 3314 Tecnología médica
Keywords: Epidermal antenna
Flexible wideband antenna
Microwave medical applications
Issue Date: 2020
Journal: Sensors (Switzerland) 
Abstract: Microwave thermometry is a noninvasive and passive technique for measuring internal body temperature. Wearable compact antennas, matched to the specific body area, are required for this method. We present a new epidermal wideband antenna for medical radiometry. The double asymmetric H-shaped slot antenna was designed to be matched to di erent parts of the body without fat layers. The slots are fed by a short-circuited microstrip line in order to decrease size and back radiation, thus reducing potential interferences. In this way, contribution to radiometric temperature due to back radiation is lower than 4%, versus the 20% of the volume under investigation, over the whole operating frequency band. The designed prototype was manufactured on a flexible substrate. The antenna is a very small size, to make it comfortable and suitable for being used by patients with di erent body mass indexes. The double H-shaped antenna shows good wideband matching results from around 1.5 GHz up to 5 GHz, in di erent body locations such as the neck, foot instep and foot sole.
ISSN: 1424-8220
DOI: 10.3390/s20071987
Source: Sensors (Switzerland) [ISSN 1424-8220], n. 20
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