Development of A Electromagnetic Exposure System for In Vitro Experiments at PCS Band

PCS 대역 세포실험용 전자파 노출 장치 개발

  • Part Min-Young (Department of Radio and Science Engineering, Chungnam University) ;
  • Ko Chae-Ok (Department of Radio and Science Engineering, Chungnam University) ;
  • Sung Mi-Jin (Pantech) ;
  • Kim Jeong-Lan (Department of Radio and Science Engineering, Chungnam University) ;
  • Pack Jeong-Ki (Department of Radio and Science Engineering, Chungnam University)
  • Published : 2006.04.01

Abstract

In this paper, a rectangular-cavity-type exposure system for in vitro experiments has been developed fur the biological effect studies of radio frequency fields from handhold wireless telephones. It ia fed with a ${\lambda}_g/8$ monopole antennas at the ${\lambda}_g/4$ position of the top plate in order to excite fundamental $TE_{102}$ mode and it allows the uniform exposure of one 8.5 cm(inner diameter) petri dish. SARs inside the exposed medium have been characterized by numerical simulations, using the FDTD method and by experimental dosimetry with fiberoptic temperature probes (model 790, Luxtron Corp.).

본 논문에서는 국내 PCS 대역인 1,762.5 MHz의 세포실험용 전자파 노출 장치를 설계 및 제작하였다. 노출 장치는 도파관의 ${\lambda}_g/4$ 지점에 위치한 ${\lambda}_g/8$ 모노폴 안테나에 의해 $TE_{102}$ 모드로 동작되며, 노출 장치 내부에 내부 직경이 8.5 cm인 petri dish 1개를 노출시킬 수 있다. 세포실험용 전자파 노출 장치는 구형 공진기형으로 수치 해석 기법 중 하나인 FDTD 방법을 사용하여 SAR을 해석하였고 온도 프로브(model 790, Luxtron Corp)를 이용해 측정하였다.

References

  1. D. M. Pozar, Microwave Engineering, Wiley, 1998
  2. K. Yee, 'Numerical solution of initial boundary value problems involving maxwell's equation in isotropic media', IEEE Transactions on Antennas and Propagation, pp. 302-307, May 1966
  3. K. S. Kunz, R. J. Luebbers, The Finite Difference Time Domain Method for Electromagnetics, CRC Press, 1993
  4. C. K. Chou, H. Bassen, and Q. Balzano, 'Radio frequency electromagnetic exposure: tutorial review on experimental dosimetry', Bioelectromagnetics, vol. 17, pp. 195-208, 1996 https://doi.org/10.1002/(SICI)1521-186X(1996)17:3<195::AID-BEM5>3.0.CO;2-Z
  5. T. Toivo, 'Water cooled waveguide exposure chamber for In vitro studies at 900 MHz', Proceeding of BEMS Meeting, pp. 124-127, 2000