摘要
提出了一种加载"牛角"形折线槽的贴片天线结构,通过调节折线槽尺寸,可灵活实现小频率比的双频设计。基于此设计了一种新型共口径四频双圆极化微带天线,仅利用三层堆叠结构实现了四个频段的覆盖,包括北斗三个频段B3(1 268±10)MHz、L(1 616±10)MHz、S(2 491±10)MHz和L波段的(1 995±10)MHz。仿真结果表明,天线在四个频段范围内均满足回波损耗小于–10 d B、轴比小于3 d B及基本的增益和波束宽度要求。天线两输入端口隔离度小于–15 d B,因此可用作北斗天线收发一体卫星通信终端应用。
A novel patch structure with “ox horn” broken-line groove was designed, which could be implemented flexibly at dual band design of little frequency ratio through adjusting the size of the groove. Thus, a novel design of common-aperture and dual circular polarized microstrip antenna was proposed, which was made up of only three stack-up layers to cover four bands including B3（1 268±10） MHz, L（1 616±10） MHz, S（2 491±10） MHz and L wave band（1 995±10） MHz. Simulation results indicate that return loss of proposed antenna is below –10 dB, axial ratio is below 3 dB, isolation of two input ports is below –15 dB and the gain and the beam width meet basic requirements in the range of four bands. So this design can be used for CNSS transceiver for its favorable performance.
出处
《电子元件与材料》
CAS
CSCD
2015年第6期48-52,共5页
Electronic Components And Materials
基金
重庆市自然科学基金项目资助(No.CSTC2012jj40054)
关键词
天线
牛角形折线槽
北斗
四频
双圆极化
贴片
antenna
ox horn broken-line groove
Beidou
four-frequency
dual circular polarization
patch
