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Broadband Dual-Use Array with Planar Log Periodic Dipole Elements

机译:平面对数周期偶极子元件的宽带两用阵列

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This paper presents a phased array consisting of 8 horizontally positioned planar log periodic dipole array antennas for use over the frequency range of 800 to 1,300 MHz. The array is dual use in that it can either scan in azimuth with a narrow beam or be forward looking with a null-filled broad beam. To achieve the broad beam, the 8-element array is divided into two 4-element subarrays. The main beam of each subarray is then pointed near the first null of the 8-element uniform array radiation pattern to "fill" the nulls. The results for the narrow beam configuration produce an azimuthal beamwidth of 15 degrees with 15 dBi of gain, and the null-filled configuration produces an increase in azimuthal beamwidth to 55 degrees (40 degrees increase) with a peak gain of 10 dBi (loss of 5 dB). Note that this paper only presents the antenna development and array testing but not any system hardware.
机译:本文提出了一种相控阵,该相控阵由8个水平放置的平面对数周期偶极子阵列天线组成,可在800至1,300 MHz的频率范围内使用。该阵列具有双重用途,它既可以用窄光束扫描方位角,也可以用零填充的宽光束前视。为了实现宽光束,将8元素数组划分为两个4元素子数组。然后,将每个子阵列的主光束指向8元素均匀阵列辐射图的第一个零点附近,以“填充”零点。窄波束配置的结果产生15度的方位角波束宽度,增益为15 dBi,而零填充配置产生的方位角波束宽度增加至55度(幅度增加40度),峰值增益为10 dBi( 5分贝)。请注意,本文仅介绍天线的开发和阵列测试,而没有介绍任何系统硬件。

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