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Journal Article
Implementation of an in Vitro Exposure System for 28 GHz
- Authors
- Young Seung Lee, Philip Ayiku Dzagbletey, Jae-Young Chung, Sang Bong Jeon, Ae-Kyoung Lee, Nam Kim, Seong Jong Song, Hyung-Do Choi
- Issue Date
- 2020-12
- Citation
- ETRI Journal, v.42, no.6, pp.837-845
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- The objective of this study was to implement an in vitro exposure system for 28혻GHz to investigate the biological effects of fifth-generation (5G) communication. A signal source of 28혻GHz 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 10혻W for high-power 28-GHz exposure. A 3-dB uniformity over the 80혻mm혻×혻80혻mm 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.
- KSP Keywords
- 28 GHz, 5G millimeter-wave, Cell Culture, Cooling Rate, Dose-response, Fifth-Generation(5G), High power, Infrared camera, Input power, Power control(PC), Real-time feedback
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
