Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 837-845 |
| Number of pages | 9 |
| Journal | ETRI Journal |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2020 |
Keywords
- 3D culture
- exposure system
- in vitro
- integration
- millimeter-wave
- uniformity