ETRI Journal

  • 제42권6호
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  • Pages.837-845
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  • 2020
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Implementation of an in vitro exposure system for 28 GHz

  • Lee, Young Seung (Radio and Satellite Research Division, Electronics and Telecommunications Research Institute) ;
  • Dzagbletey, Philip Ayiku (Department of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Chung, Jae-Young (Department of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Jeon, Sang Bong (Radio and Satellite Research Division, Electronics and Telecommunications Research Institute) ;
  • Lee, Ae-Kyoung (Radio and Satellite Research Division, Electronics and Telecommunications Research Institute) ;
  • Kim, Nam (Department of Computer and Communication Engineering, Chungbuk National University) ;
  • Song, Seong Jong (Management Planning Office) ;
  • Choi, Hyung-Do (Radio and Satellite Research Division, Electronics and Telecommunications Research Institute)
  • 투고 : 2020.04.20
  • 심사 : 2020.08.03
  • 발행 : 2020.12.14
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초록

The objective of this study was to implement an in vitro exposure system for 28 GHz to investigate the biological effects of fifth-generation (5G) communication. A signal source of 28 GHz for 5G millimeter-wave (MMW) deployment was developed, followed by a variable attenuator for antenna input power control. A power amplifier was also customized to ensure a maximum output power of 10 W for high-power 28-GHz exposure. A 3-dB uniformity over the 80 mm × 80 mm area that corresponds to four Petri dishes of three-dimensional cell cultures can be obtained using a customized choke-ring-type antenna. An infrared camera is employed for temperature regulation during exposure by adjusting the airflow cooling rate via real-time feedback to the incubator. The reported measurement results confirm that the input power control, uniformity, and temperature regulation for 28-GHz exposure were successfully accomplished, indicating the possibility of a wide application of the implemented in vitro exposure system in the fields of various MMW dose-response studies.

키워드

과제정보

The authors would like to thank Dymstec for their support and assistance during our system implementation. This work was supported by the ICT R&D program of MSIT/IITP. [2019-0-00102, A Study on Public Health and Safety in a Complex EMF Environment].

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