A transmit-array lens antenna is proposed with a view to optimally treat patients with tumors deep inside their bodies. The proposed antenna produces a destructive interference of the electric field that can reduce the heat generated at the skin by the heat-nulling technique. Simultaneously, it concentrates microwave energy on the deep-seated tumor. It is possible to heat an area of 114 mm2 at a 50 mm depth below the skin without damage to normal cells. The specific absorption rate (SAR) at a depth of 50 mm corresponds to 50% of the maximum SAR induced in the human body. These results show that the proposed transmit-array lens antenna is suitable for treating tumors located deep inside the body, such as kidney cancer.
Bibliographical noteFunding Information:
Manuscript received February 29, 2020; accepted March 14, 2020. Date of publication March 23, 2020; date of current version May 5, 2020. This work was supported by the National Research Foundation of Korea through a Grant funded by the Korea Government, MSIT, under Grant NRF-2019R1A2C1005764. (Corresponding author: Young Joong Yoon.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: email@example.com; firstname.lastname@example.org; email@example.com). Digital Object Identifier 10.1109/LAWP.2020.2982676
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering