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Log-periodic antennas with in-phase currents

机译:具有同相电流的对数周期天线

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摘要

The approximate method of calculating directional characteristics of log-periodic antenna: directional patterns, directivity, and pattern factor is proposed. The analytical expressions are determined, and characteristics of antennas with straight metal dipoles and with in-phase radiators of the same dimensions are calculated. The advantage of using in-phase radiators is demonstrated. It is shown that the log-periodic antennas of radiators with in-phase current distribution allow to decrease the antenna length and to provide the high directivity in a wide frequency range. The problem of optimization of considered antennas by methods of mathematical programming is stated.
机译:提出了一种计算对数周期天线方向特性的近似方法:方向图,方向性和方向图因子。确定解析表达式,并计算具有直金属偶极子和具有相同尺寸的同相辐射器的天线的特性。证明了使用同相辐射器的优势。结果表明,具有同相电流分布的辐射器的对数周期天线可以减小天线长度,并在较宽的频率范围内提供高方向性。阐述了通过数学编程方法优化考虑的天线的问题。

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