摘要
本文提出了一种基于LTCC(Low-Temperature Co-fired Ceramic)技术的改进型Ka波段微带H型缝隙耦合天线结构,并在传统的矩形寄生贴片上开槽为E型贴片,采用E型贴片在实现天线小型化的同时也在一定程度上改善了其阻抗特性实现宽带辐射。同时由于寄生贴片的引向作用,天线的增益也相应提高。天线在两层LTCC基板上包含5个贴片,其中单个辐射贴片位于下层,一对2×2的E型寄生贴片位于其上层。通过仿真得出,在35GHz时天线最大增益为7.7dBi,反射损耗小于-10dB的相对带宽为20.8%(32.0-39.3GHz)。
An microstrip H-type slot antenna with E-type parasitic patches in Ka-band is proposed in this paper.,the developed prototype of this antenna employs a multilayer Low-Temperature Co-fired Ceramic(LTCC)substrate.The E-type parasitic patches are used instead of the traditional rectangular chip to achieve antenna's miniaturization and improve the impedance characteristics to increase the antenna's bandwidth to some extent.At the same time,owning to the parasitic patches,the orientation of the antenna is changed better,so its gain can be improved.The antenna installs five patches on two LTCC layers,the 2×2 E-type parasitic patches on the upper layer and the radiation chip on the lower one.The proposed antenna by simulation can achieve 7.7 dB absolute gain at 35 GHz and while the fractional bandwidth of-10 dB return loss is 20.8%(from 32 to 39.3 GHz).
出处
《微波学报》
CSCD
北大核心
2010年第S1期116-118,共3页
Journal of Microwaves
