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随着广播电视的迅速发展,各地电视频道正在不断增加,设计制作宽频带天线已是广大电视机用户普遍关心的问题。本文就宽频带对数周期天线的具体设计与制作作一介绍。对数周期天线的特点是:输入阻抗、方向图、增益等主要电参数随频率变化呈现对数关系,因而可以近似地把这些参数看作与频率无关,所以它是一种宽频带天线。对数周期天线的形式有多种,如锯齿形、对称
With the rapid development of radio and television, television channels around the world are constantly increasing. The design of broadband antennas has become a common concern of most TV users. This paper introduces the design and manufacture of wide band logarithmic periodic antenna. Logarithmic periodic antennas are characterized by a logarithmic relationship of the major electrical parameters such as input impedance, pattern and gain as a function of frequency, so that these parameters can be approximated as frequency independent, so it is a wideband antenna. Logarithmic periodic antenna in a variety of forms, such as zigzag symmetry