一种新型介质埋藏贴片天线阵设计

为解决介质埋藏微带天线组阵后天线增益较低的问题,运用介质中电磁波传播理论、微带天线耦合理论、介质埋藏天线技术和微带天线圆极化技术等,采用天线阵元不共介质、同轴馈电、馈电点选在辐射贴片对角线上,在辐射贴片上附加简并分离单元等措施,设计和制作出了一种新型介质埋藏贴片天线阵列. 经仿真计算和实物天线测试显示,天线仿真增益为10.45 dB,实测增益约为9.2 dB,接近同类型的微带天线二元阵增益,该天线符合北斗天线性能要求,采用新型组阵结构后天线增益得到明显提高. 

A Newly Dielectric Embedded Patch Antenna Array

In order to solve the lower gain problem of dielectric microstrip antenna group array, some theories were applied, for example, the electromagnetic wave propagation theory of dielectric, electromagnetism coupling theory of microstrip antenna, dielectric embedded antenna technology and circular polarization technology of microstrip antenna. Some methods were adopted, for instance, putting the antenna array elements in different parts with the same dielectric, feeding the antenna by coaxial line, and putting the feeding point in the diagonal line of driven patch, appending the degeneracy separation element in the driven patch. The low gain problem of dielectric embedded microstrip antenna array was solved by the designed antenna. The results of simulation calculation and practical antenna testing show that the performance of the antenna array can satisfy the needs of Beidou antenna, the simulation gain is 10.45 dB and the testing gain is 9.2 dB, which is close to the gain of 2-element microstrip antenna of the same type.