本文讨论了矩形脉冲激励的对称驻波天线的能量方向图、总辐射能量、辐射效率和辐射电阻等问题。
The energy pattern, total radiation energy, radiation efficiency and radiation resistance of standing-wave dipole excited by rectangular pulse are discussed.
采用小尺寸低功耗的射频芯片结合实际环境设计出螺旋结构天线，选择合适的频率，天线在轴向方向得到最大的辐射能量。
A helix antenna was presented together with low power RF amplifier, as the frequency fitted, the axial direction can obtain largest radio energy.
系统应用了多个探测器，每一个探测器都包括一根连在用于测量投射电磁辐射能量的仪器（辐热测量计）上的天线。
The system employs multiple detectors, each comprising an antenna coup LED with a device ( a bolometer) for measuring the energy of incident electromagnetic radiation.
只有匹配合适的天线系统才能在发射时使能量充分辐射出去。
Only a properly matched antenna system will allow maximum power transfer.
只有匹配合适的天线系统才能在发射时使能量充分辐射出去。
Only a properly matched antenna system will allow maximum power transfer.
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