TY - GEN
T1 - Annular slot biomedical antenna for combined microwave heating and infrared thermography of the tissue
AU - Tofighi, Mohammad Reza
AU - Attaluri, Anilchandra
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5/14
Y1 - 2019/5/14
N2 - A previously introduced annular slot antenna (ASA), utilized for combined microwave heating and radiometry for blood perfusion measurement of tissues, is modified to replace microwave radiometry with infrared thermography. Infrared (IR) thermography is a more convenient and cost effective alternative to microwave radiometry for skin/superficial and small animal (such as mice and rat) applications. An area with removed metallization is introduced around the central axis of the circular shape ASA, used for heating at 2.4 GHz. The S11 resonance frequency and/or depth change with the size of this area. Moreover, a hole at the middle of this area, made across the antenna, from top to bottom, allows the infrared beam to reach the skin. Simulations and measurement show that the presence of this hole has minimal impact on the performance of the ASA in terms of S11 and specific absorption rate (SAR) profile. In addition, the preliminary result of an IR camera captured images for a heating episode (2 W, at 2.45 GHz), conducted on a tissue phantom, is reported. Temperature rise of 5.7°C after 1 minute is observed at the center of the hole.
AB - A previously introduced annular slot antenna (ASA), utilized for combined microwave heating and radiometry for blood perfusion measurement of tissues, is modified to replace microwave radiometry with infrared thermography. Infrared (IR) thermography is a more convenient and cost effective alternative to microwave radiometry for skin/superficial and small animal (such as mice and rat) applications. An area with removed metallization is introduced around the central axis of the circular shape ASA, used for heating at 2.4 GHz. The S11 resonance frequency and/or depth change with the size of this area. Moreover, a hole at the middle of this area, made across the antenna, from top to bottom, allows the infrared beam to reach the skin. Simulations and measurement show that the presence of this hole has minimal impact on the performance of the ASA in terms of S11 and specific absorption rate (SAR) profile. In addition, the preliminary result of an IR camera captured images for a heating episode (2 W, at 2.45 GHz), conducted on a tissue phantom, is reported. Temperature rise of 5.7°C after 1 minute is observed at the center of the hole.
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U2 - 10.1109/RWS.2019.8714505
DO - 10.1109/RWS.2019.8714505
M3 - Conference contribution
AN - SCOPUS:85068713690
T3 - IEEE Radio and Wireless Symposium, RWS
BT - 2019 IEEE Radio and Wireless Symposium, RWS 2019
PB - IEEE Computer Society
T2 - 2019 IEEE Radio and Wireless Symposium, RWS 2019
Y2 - 20 January 2019 through 23 January 2019
ER -