Ultra-broadband omnidirectional printed dipole arrays
Ultra-broadband omnidirectional printed dipole arrays
复制标题
DOI：
10.1109/aps.2005.1552309
复制
发表时间：
2005-07
期刊：
影响因子：
--
通讯作者：
S. Sevskiy;W. Wiesbeck
中科院分区：
文献类型：
--
作者：
S. Sevskiy;W. Wiesbeck
将对数周期天线与环形天线相结合，提出了一种新的天线概念。这一概念允许实现具有独特辐射特性的非常宽带的天线--全向辐射方向图和水平极化。天线的概念是从小环形天线衍生出来的，用排列在圆周上并沿圆周同相馈电的小偶极子来代替环路的导线。然后将这种小的偶极子结构扩展到具有结合了不同馈电技术的半波长偶极子的天线结构。然后应用对数周期原理来获得超宽带辐射特性。所得到的天线设计可以单独使用，也可以与垂直极化天线组合使用，作为具有水平极化或双极化全向辐射方向图的多频段室内基站天线。
The paper presents a novel antenna concept based on combining the logarithmic-periodic antenna with the loop antenna. This concept allows realization of very broadband antennas with unique radiation properties -omnidirectional radiation pattern and horizontal polarization. The antenna concept is derived from a small loop antenna by replacing the wire of the loop by small dipoles arranged on a circumference and fed in phase along the circumference. This small dipole structure is then extended to antenna structures with half-wavelength dipoles incorporating different feeding techniques. The logarithmic-periodic principle is then applied to attain ultra-broadband radiation properties. The obtained antenna designs can be used alone or in combination with a vertically polarized antenna as a multi-band indoor base station antenna with horizontally polarized or dual-polarized omnidirectional radiation patterns.