摘要
该文提出一种ISM(2.4 GHz)频段的平面单极子天线。该天线为全向天线,在2.23 GHz到2.84 GHz频段的回波损耗比小于-15 dB。建立模拟电磁安全环境的模型,建立人体结构仿真模型和辐射边界。最后,仿真分析2.4 GHz频点的比吸收率、电场强度最大值,与瞬态热模块耦合,计算6 min和30 min的温升,与国际非电离辐射防护委员会(International Commission on Non-Ionizing Radiation Protection,ICNIRP)制定的电磁暴露安全防护导则进行安全评估。结果表明,该天线对大脑和心脏的比吸收率、电场强度、温升远小于安全限值,不会对健康造成危害。
A planar monopole antenna in ISM(2.4 GHz)band is proposed in this paper.The antenna is omni-directional,and the echo loss ratio is less than-15 dB in the frequency band ranging from 2.23 GHz to 2.84 GHz.The model of simulating electromagnetic safety environment is established,and the simulation model of human body structure and radiation boundary are established.Finally,the specific absorptivity and the maximum electric field of the 2.4 GHz frequency point are simulated and analyzed,coupled with the transient thermal module,and the temperature rises of 6 minutes and 30 minutes are calculated,and the safety assessment is carried out with the electromagnetic exposure protection guidelines formulated by the International Commission on Non-Ionizing Radiation Protection(ICNIRP).The results show that the specific absorptivity,electric field intensity and temperature rise of the antenna to the brain and heart are far less than the safety limit and will not cause harm to health.
出处
《科技创新与应用》
2024年第26期27-31,共5页
Technology Innovation and Application
