Design of microwave antenna and the numerical simulation of specific absorption rate base on high frequency structure simulator
(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第1期
- Page:
- 96-101
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Design of microwave antenna and the numerical simulation of specific absorption rate base on high frequency structure simulator
- Author(s):
- JI Cong; CHENG Yunzhang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- Keywords:
- ; microwave hyperthermia; horn antenna; specific absorption rate; high frequency structure simulator
- PACS:
- R318
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.01.017
- Abstract:
- Abstract: Objective To design a new horn antenna radiator which works at 2.45 GHz for microwave hyperthermia. Methods Based on the theory of horn antenna, the parameters of radiator were determined. High frequency structure simulator (HFSS) was used to establish the cone horn antenna model, and analyze the distributions of electromagnetic fields and the specific absorption rate of human head tissues. Results In the central frequency of 2.45 GHz, the antenna input voltage standing-wave ratio was less than 1.5; the return loss was lower than -13 dB; and the maximum specific absorption rate of human head tissues under electromagnetic radiation was 1.7 W/kg, which met the technical indexes. Conclusion The radiator has a good antenna pattern, and the output microwave energy meets the requirements of physical therapy.
Last Update: 2018-01-25