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中波地网的敷设 被引量:3
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作者 陈东 《西部广播电视》 2002年第12期51-52,共2页
本文介绍了中波广播传播的特点 ,地网的重要性 ,以及地网的敷设方法。
关键词 中波广播地网 敷设 无线辐射功率 无线损耗功率
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Compensation Method: New Perspectives
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作者 Boris Levin 《Journal of Physical Science and Application》 2014年第2期119-129,共11页
The compensation method aiming to reduce the irradiation on the user's body and to form a weak field area (a dark spot) in an antenna near region is considered. The results of the method development for the use in ... The compensation method aiming to reduce the irradiation on the user's body and to form a weak field area (a dark spot) in an antenna near region is considered. The results of the method development for the use in a narrow frequencies range are given. They show that under realistic conditions the compensation method allows reducing the irradiation power by a factor of 3-4 and more. The pattern changes are predictable and small, if the points of antennas placement are selected correctly. The dark spot necessity near the transmitter is not limited by mobile communication. A man often uses a low-power radio station, which is placed nearby in a vehicle, and it is necessary to protect from irradiation not only user but also other passengers. In the paper, it is shown that broadband field compensation can be achieved in various structures where the needed anti-phase fields are created either by identical antennas or by radiators located at equal distance from the compensation point, or by flat reflectors. 展开更多
关键词 Antenna theory COMPENSATION mobile antennas mutual coupling near fields
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