一种适用于相控阵的超宽带双斜方形天线

宽频带是当前天线领域的研究热点之一.目前在相控阵系统中应用最广泛的印制天线有八木天线、领结型天线等.论文提出一种具有超宽带宽的新型传输带-馈线的印制天线,该天线由两个具有不同长度的平行类斜方形偶极子组成.其具有尺寸小,超宽带宽、较宽的波束宽度、增益高及前后比高等优点.通过仿真得到的VSWR和远场辐射方向图分别验证了该天线的特性.在相控阵和宽频带无线通信等领域具有良好的应用前景.

Analysis and design of ultra-wide-band double rhombus antenna applying on the phase arrays

Wide band is one of the hot issues in the current researches on antennas. Among the most widely used printed antennas in phased array systems are quasi-Yagi, bow-tie antenna and so on.This paper presented a new microstrip-fed printed antenna design of ultrawide bandwidth. The antenna consisted of two parallel-modified dipoles of different lengths. The regular dipole shape was modified to a quasi-rhombus shape. The proposed antenna provided endfire radiation patterns with small size, wide bandwidth, wide beamwidth, high gain and high front-to-back ratio. Using Ansoft HFSS, the VSWR and far-field radiation characteristics verified the good performance which made it suitable for the phased arrays and wideband wireless communication systems with good prospect.