For conveniently calculating the radiated electric field of transverse electromagnetic(TEM) horn antenna,an approximate simplified analytical calculation method is suggested.This method divides the horn to a system of...For conveniently calculating the radiated electric field of transverse electromagnetic(TEM) horn antenna,an approximate simplified analytical calculation method is suggested.This method divides the horn to a system of V-antennas and superimposes the fields of all V-antennas to obtain the field of the TEM horn.The method is compared with the traditional analytical method and numerical method.The obtained results suggest that the proposed method is valid,simple and that it can fastly calculate the radiated electric field of the TEM horn antenna in an arbitrary space with an arbitrary excitation voltage.Based on this method,radiation of the TEM horn antenna of a high-altitude electromagnetic pulse(HEMP) simulator is simulated.Rise time,pulse width,peak value of electric field,and field distribution are analyzed.Results show that the TEM horn antenna can be used in HEMP simulators: the near field waveform is closer to the standard waveform than to the far field waveform; the standards for the rise time and the peak value of electric field are easily satisfied; the pulse width of the radiated field can be increased by broadening the pulse width of an excitation source and by making the antenna of a proper展开更多
文章参照标准IEC 61967-2设计了一个横电磁波(transverse electric and magnetic field,TEM)小室,介绍了TEM小室的整体设计方法,实现了TEM小室良好的阻抗匹配特性,并研究了2种改进方法用于抑制TEM小室高次模和谐振的产生;在三维电磁仿...文章参照标准IEC 61967-2设计了一个横电磁波(transverse electric and magnetic field,TEM)小室,介绍了TEM小室的整体设计方法,实现了TEM小室良好的阻抗匹配特性,并研究了2种改进方法用于抑制TEM小室高次模和谐振的产生;在三维电磁仿真软件中建立了新型TEM小室的三维仿真模型,并计算了新型TEM小室的S参数和电压驻波比(voltage standing wave ratio,VSWR)。计算结果表明,2种新型TEM小室的上限可用频率可提高到3GHz。展开更多
基金Project supported by National Natural Science Foundation of China（51177174）.
文摘For conveniently calculating the radiated electric field of transverse electromagnetic(TEM) horn antenna,an approximate simplified analytical calculation method is suggested.This method divides the horn to a system of V-antennas and superimposes the fields of all V-antennas to obtain the field of the TEM horn.The method is compared with the traditional analytical method and numerical method.The obtained results suggest that the proposed method is valid,simple and that it can fastly calculate the radiated electric field of the TEM horn antenna in an arbitrary space with an arbitrary excitation voltage.Based on this method,radiation of the TEM horn antenna of a high-altitude electromagnetic pulse(HEMP) simulator is simulated.Rise time,pulse width,peak value of electric field,and field distribution are analyzed.Results show that the TEM horn antenna can be used in HEMP simulators: the near field waveform is closer to the standard waveform than to the far field waveform; the standards for the rise time and the peak value of electric field are easily satisfied; the pulse width of the radiated field can be increased by broadening the pulse width of an excitation source and by making the antenna of a proper
文摘文章参照标准IEC 61967-2设计了一个横电磁波(transverse electric and magnetic field,TEM)小室,介绍了TEM小室的整体设计方法,实现了TEM小室良好的阻抗匹配特性,并研究了2种改进方法用于抑制TEM小室高次模和谐振的产生;在三维电磁仿真软件中建立了新型TEM小室的三维仿真模型,并计算了新型TEM小室的S参数和电压驻波比(voltage standing wave ratio,VSWR)。计算结果表明,2种新型TEM小室的上限可用频率可提高到3GHz。
