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A beam switched log-periodic antenna for EMI measurement

机译:一种用于EMI测量的波束切换对数周期天线

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摘要

In EMI (Electromagnetic Interference) test, the electric field intensity of radiated emission from EUT (Equipment Under Test) is measured. To find the maximum radiation by EUT, a receiving antenna is moved along a vertical pole, because the electric field intensity is seriously changed by the effect of ground reflection wave. In addition to this vertical movement, the main beam tilting is required to keep stable reception level from the EUT. A mechanical tilting is the current standard, however quick and fine adjustment is expected.
机译:在EMI(电磁干扰)测试中,测量EUT(被测设备)的辐射发射的电场强度。为了通过EUT找到最大辐射,接收天线沿垂直极移动,因为电场强度会由于地面反射波的影响而发生严重变化。除此垂直移动外,还要求主波束倾斜以保持来自EUT的稳定接收电平。机械倾斜是当前的标准,但是可以期望快速而精细的调整。

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